SECTION 260500 - COMMON WORK RESULTS FOR ELECTRICAL …

1847 BASIC ELECTRICAL MATERIALS AND METHODS 260500 - 1

SECTION 260500 - COMMON WORK RESULTS FOR ELECTRICAL

PART 1 - GENERAL

1.1 SUMMARY

A. This Section includes the following:

1. Electrical equipment coordination and installation.2. Common electrical installation requirements.

1.2 DIVISION OF WORK

A. This section delineates the division of work between the Electrical Contractor and any otherContractor.

B. Duct smoke detectors, if provided per NFPA 90A requirements, shall be furnished and wired byDivision 28, installed by Division 23. Fire alarm AHU shut down circuits shall be wired fromthe fire alarm control panel to a termination point, adjacent to the AHU control, under Division28. AHU control wiring from the termination point to the equipment shall be under Division23.

C. Equipment less than 110 Volt, all relays, actuators, timers, seven-day clocks, alternators,pressure, vacuum, float, flow, pneumatic-electric, and electric-pneumatic switches, aquastats,freeze-stats, line and low voltage thermostats, thermals, remote selector switches, remotepushbutton stations, emergency break-glass stations, interlocking, disconnect switches beyondtermination point, and other appurtenances associated with equipment under Division 23 shallbe furnished, installed and wired under Division 23.

D. All wiring and conduit required for controls and instrumentation not indicated on the drawingsshall be furnished and installed by Division 23. All wiring and/or cabling installed for theproject shall be contained within conduit as indicated by specification section 260533“Raceways and Boxes for Electrical Systems”.

E. Where electrical wiring is required by trades other than covered by Division 26, specificationsfor that section shall refer to same wiring materials and methods as specified under Division 26.

F. Reports showing the sizes of the maximum overcurrent protection (MOCP) and the minimumcircuit ampacity (MCA) and overload setting of the devices for all motors; shall be provided bythe contractor providing the equipment to the electrical engineer of record before project finalapproval.

G. All electrical work shall be performed by companies properly licensed by the NC StateElectrical Board of Examiners.

H. Exit doors & other doors provided with built-in outlets shall be wired by the electricalcontractor all the way to the door outlet.


I. All conductor / wiring sizes shown on plans are based on 75-degree Celsius rated equipmentterminal(s). Contractor shall be responsible for revising conductor / wiring / conduit sizes inaccordance with the NEC where equipment provided includes terminal ratings other than 75-degree Celsius as indicated above.

1.3 COORDINATION

A. Coordinate arrangement, mounting, and support of electrical equipment:

1. To allow maximum possible headroom unless specific mounting heights that reduceheadroom are indicated.

2. To provide for ease of disconnecting the equipment with minimum interference to othertrade installations.

3. To allow right of way for piping and conduit installed at required slope.4. So connecting raceways, cables and wireways will be clear of obstructions and of the

working and access space of other equipment.

B. Coordinate installation of required supporting devices and set sleeves in cast-in-place concrete,masonry walls, and other structural components as they are constructed.

C. Coordinate location of access panels and doors for electrical items that are behind finishedsurfaces or otherwise concealed. Coordinate electrical testing of electrical, mechanical, andarchitectural items, so equipment and systems that are functionally interdependent are tested todemonstrate successful interoperability.

D. Electrical contractor is responsible for notifying the local inspectors to schedule all requiredinspections including rough-in, above ceiling and final inspection.

1.4 DOCUMENTATION

A. All tests specified shall be completely documented indicating time of day, date, temperature andall pertinent test information.

B. All required documentation of readings indicated shall be submitted to the engineer prior to, andas one of the prerequisites for, final acceptance of the project.

PART 2 - PRODUCTS

PART 3 - EXECUTION

3.1 COMMON REQUIREMENTS FOR ELECTRICAL INSTALLATION

A. Comply with NECA 1.

B. Equipment Installation: The complete electrical installation shall fully comply with allrequirements of the regulations, laws, ordinances, the National Electrical Code, referenced


Standards, and other Codes applicable to this project. In addition, equipment shall be installedin accordance with the manufacturer’s instructions as required by NEC 110.3 (B).

C. Measure indicated mounting heights to bottom of unit for suspended items and to center of unitfor wall-mounting items.

D. Headroom Maintenance: If mounting heights or other location criteria are not indicated,arrange and install components and equipment to provide maximum possible headroomconsistent with these requirements.

E. Equipment: Install to facilitate service, maintenance, and repair or replacement of componentsof both electrical equipment and other nearby installations. Connect in such a way as tofacilitate future disconnecting with minimum interference with other items in the vicinity.

F. Right of Way: Give to raceways and piping systems installed at a required slope.

G. All conductors shall be contained in raceway.

H. No raceways shall contain circuits of different voltages.

I. Low-voltage power conductors/cables and line voltage power conductors/cables shall not becontained within the same raceway, boxes, cabinets or enclosures without proper metallicbarrier separation.

J. Where electrical wiring is required by trades other than covered by Division 26, the installershall refer to the wiring materials and methods as specified under Division 26. No exceptions.

K. Demolition for Remodeling:

1. Abandoned conduit/boxes shall have all electrical wiring removed completely and notjust made “safe”.

2. Conduit/boxes shall be removed where practical without creating additionaldemolition/restitution work for other trades.

3. Where existing conduit, junction boxes, supports, etc. are removed as indicated on theplans, the Contractor shall be responsible for repairing, patching, painting, etc. theportion of the wall and / or ceiling affected by the removed equipment. The wall and/orceilings shall be finished in a neat and workmanlike manner, shall match existingadjacent finishes, and are subject to review and acceptable by the Owner and Engineer.Treat all concrete and hallow masonry wall units with block filler. Gypsum board wallsshall be cut neatly, patched with appropriate tape and / or compound, sealed, sanded andfinished. Finish paint corner to corner with two coats of paint to match existing. Refer toArchitectural plans and specifications for additional requirements.

END OF SECTION 260500

1847 LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES 260519 - 1

SECTION 260519 - LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Building wires and cables rated 600 V and less.2. Connectors, splices, and terminations rated 600 V and less.

1.2 ACTION SUBMITTALS

A. Product Data: For each type of product.

1.3 INFORMATIONAL SUBMITTALS

A. Field quality-control reports.

PART 2 - PRODUCTS

2.1 CONDUCTORS AND CABLES

A. Copper Conductors: Comply with NEMA WC 70/ICEA S-95-658.

B. Conductor Insulation: Comply with NEMA WC 70/ICEA S-95-658 for Type THHN-2-THWN-2 and Type XHHW-2 and Type SO.

C. VFC Cable:

1. Comply with UL 1277, UL 1685, and NFPA 70 for Type TC-ER cable.2. Type TC-ER with oversized crosslinked polyethylene insulation, spiral-wrapped foil plus

85 percent coverage braided shields and insulated full-size ground wire and sunlight- andoil-resistant outer PVC jacket.

3. Comply with UL requirements for cables in direct burial and Classes I and II, Division 2hazardous location applications.

D. All wire and cable shall be listed by an “approved” third-party testing agency.

2.2 CONNECTORS AND SPLICES

A. Description: Factory-fabricated connectors and splices of size, ampacity rating, material, type,and class for application and service indicated.


2.3 SYSTEM DESCRIPTION

A. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, bya qualified testing agency, and marked for intended location and application.

B. Comply with NFPA 70.

PART 3 - EXECUTION

3.1 CONDUCTOR MATERIAL APPLICATIONS

A. Feeders: Copper. Solid for No. 10 AWG and smaller; stranded for No. 8 AWG and larger.

B. Branch Circuits: Copper. Solid for No. 10 AWG and smaller; stranded for No. 8 AWG andlarger.

3.2 CONDUCTOR INSULATION AND MULTICONDUCTOR CABLE APPLICATIONS ANDWIRING METHODS

A. Service Entrance: Type XHHW-2, single conductors in raceway.

B. Exposed Feeders: Type XHHW-2, single conductors in raceway.

C. Feeders Concealed in Ceilings, Walls, Partitions, and Crawlspaces: Type THHN-2-THWN-2,single conductors in raceway.

D. Feeders Concealed in Concrete, below Slabs-on-Grade, and Underground: Type THHN-2-THWN-2, single conductors in raceway.

E. Exposed Branch Circuits, Including in Crawlspaces: Type THHN-2-THWN-2, singleconductors in raceway.

F. Branch Circuits Concealed in Ceilings, Walls, and Partitions: Type THHN-2-THWN-2, singleconductors in raceway.

G. Branch Circuits Concealed in Concrete, below Slabs-on-Grade, and Underground: Type THHN-2-THWN-2, single conductors in raceway.

H. Cord Drops and Portable Appliance Connections: Type SO, hard service cord with stainless-steel, wire-mesh, and strain relief device at terminations to suit application.

I. VFC Output Circuits: Type XHHW-2 in metal conduit.

J. Class 1 Control Circuits: Type THHN-THWN, in raceway.

K. Class 2 Control Circuits: Type THHN-THWN, in raceway.

L. Power and lighting circuits #10 AWG and smaller shall have solid copper conductors.Conductor sizes #8 AWG and larger shall have Class B stranded copper conductors.


M. Power and lighting circuits minimum conductor size shall be #12 AWG and maximumconductor size allowed shall be 500Kcmil.

N. Fire alarm and control wiring shall have stranded copper conductors.

O. Full size neutral conductor shall be provided for each service panel and sub-panel.

P. Minimum of full size individual neutral wire shall be provided for each circuit as indicated inthe panel schedules. No neutrals for any circuits shall be shared.

Q. MC, AC or B cable is not allowed unless specifically approved in written form from thebuilding owner.

R. Aluminum conductors are not allowed.

S. All wire and cable shall be installed within raceway.

T. The insulation type for interior wiring shall be dual-rated THHN/THWN or XHHW.

3.3 INSTALLATION OF CONDUCTORS AND CABLES

A. Where the conductor length from the panel to the first outlet on a 120-volt circuit exceeds 50feet, the branch circuit conductors from the panel to the first outlet shall not be smaller than #10AWG.

B. Conceal cables in finished walls, ceilings, and floors unless otherwise indicated.

C. Complete raceway installation between conductor and cable termination points according toSection 260533 "Raceways and Boxes for Electrical Systems" prior to pulling conductors andcables.

D. Use manufacturer-approved pulling compound or lubricant where necessary; compound usedmust not deteriorate conductor or insulation. Do not exceed manufacturer's recommendedmaximum pulling tensions and sidewall pressure values.

E. Use pulling means, including fish tape, cable, rope, and basket-weave wire/cable grips, that willnot damage cables or raceway.

F. Install exposed cables parallel and perpendicular to surfaces of exposed structural members, andfollow surface contours where possible.

G. Support cables according to Section 260529 "Hangers and Supports for Electrical Systems."

3.4 CONNECTIONS

A. Tighten electrical connectors and terminals according to manufacturer's published torque-tightening values. If manufacturer's torque values are not indicated, use those specified inUL 486A-486B.


B. Make splices, terminations, and taps that are compatible with conductor material and thatpossess equivalent or better mechanical strength and insulation ratings than un-splicedconductors.

1. Use oxide inhibitor in each splice.

2. “Sta-kon” or other permanent type crimp connector shall not be used for branch circuitconnections.

3. Joints in stranded conductors shall be spliced by approved mechanical connectors andgum rubber tape or friction tape. Solder-less mechanical connectors for splices and taps,provided with UL approved insulating covers, may be used instead of mechanicalconnectors plus tape.

4. Conductors, in all cases, shall be continuous from outlet to outlet and no splicing shall bemade except within outlet or junction boxes, troughs and gutters.

5. Joints in solid conductors shall be spliced using Ideal “wirenuts”, 3M Company“Scotchlock” or T&B connectors in junction boxes, outlet boxes and lighting fixtures.

C. Wiring at Outlets: Install conductor at each outlet, with at least 6 inches of slack.

3.5 IDENTIFICATION

A. Identify and color-code conductors and cables according to Section 260553 "Identification forElectrical Systems."

B. Identify each spare conductor at each end with identity number and location of other end ofconductor, and identify as spare conductor.

C. The secondary service, feeders and branch circuits shall be color coded as follows:

1. Phase “A” = Black for 208/120V2. Phase “B” = Red for 208/120V3. Phase “C” = Blue for 208/120V4. Neutral = White for 208/120V5. Ground = Green for 208/120V

3.6 FIRESTOPPING

A. Apply firestopping to electrical penetrations of fire-rated floor and wall assemblies to restoreoriginal fire-resistance rating of assembly accordingly.

3.7 FIELD QUALITY CONTROL

A. Perform the following tests and inspections:

1. After installing conductors and cables and before electrical circuitry has been energized,test service entrance and feeder conductors.


2. Perform each visual and mechanical inspection and electrical test stated in NETAAcceptance Testing Specification. Certify compliance with test parameters.

B. Tests and Inspections:

1. Prior to energizing feeders and sub-feeders, cables shall be tested for electric continuityand short circuits. A copy of these tests shall be sent to the engineer of record.

2. Infrared Scanning: After Substantial Completion, but not more than 60 days after FinalAcceptance, perform an infrared scan of each splice in cables and conductors No. 3 AWGand larger. Remove box and equipment covers so splices are accessible to portablescanner.

a. Follow-up Infrared Scanning: Perform an additional follow-up infrared scan ofeach splice 11 months after date of Substantial Completion.

b. Instrument: Use an infrared scanning device designed to measure temperature orto detect significant deviations from normal values. Provide calibration record fordevice.

c. Record of Infrared Scanning: Prepare a certified report that identifies spliceschecked and that describes scanning results. Include notation of deficienciesdetected, remedial action taken, and observations after remedial action.

d. All current carrying phase conductors and neutrals shall be tested as installed, andbefore connections are made, for insulation resistance and accidental grounds. Thisshall be done with a 500-volt cable insulation tester. The procedures listed belowshall be followed:

1) The minimum acceptable cable insulation tester readings for cables shall beone million (1,000,000) or more ohms for #6 AWG wire and smaller,250,000 ohms or more for #4 AWG wire or larger, between conductors andbetween conductors and the ground conductor.

2) After all fixtures, devices and equipment are installed and all connectionscompleted to each panel, the contractor shall disconnect the neutral feederconductor from the neutral bar and take a cable insulation tester readingbetween the neutral bar and the grounded enclosure. If this reading is lessthan 250,000 ohms, the contractor shall disconnect the branch circuit neutralwires from the neutral bar. The contractor shall then test each one separatelyto the panel until the low readings are found. The contractor shall correcttroubles, reconnect and retest until at least 250,000 ohms from the neutralbar to the grounded panel can be achieved with only the neutral feederdisconnected.

3) At final inspection, the contractor shall furnish a cable insulation tester andshow the engineers and State Construction Office representatives that thepanels comply with the above requirements. The contractor shall alsofurnish a hook-on type ammeter and voltmeter to take current and voltagereadings as directed by the representatives.

C. Test Reports: Prepare a written report to record the following:

1. Test procedures used.2. Test results that comply with requirements.3. Test results that do not comply with requirements and corrective action taken to achieve

compliance with requirements.


D. Remove and replace malfunctioning units and retest as specified above.

E. Cables will be considered defective if they do not pass tests and inspections.


1847 GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS 260526 - 1

SECTION 260526 - GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS

PART 1 - GENERAL

1.1 SUMMARY

A. Section includes grounding and bonding systems and equipment.



PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. Manufacturers: Subject to compliance with requirements, provide products by one of thefollowing:

1. Burndy; Part of Hubbell Electrical Systems.2. ERICO International Corporation.3. ILSCO.4. O-Z/Gedney; A Brand of the EGS Electrical Group.5. Siemens Power Transmission & Distribution, Inc.

2.2 SYSTEM DESCRIPTION


B. Comply with UL 467 for grounding and bonding materials and equipment.

2.3 CONDUCTORS

A. Insulated Conductors: Copper wire or cable insulated for 600 V unless otherwise required byapplicable Code or authorities having jurisdiction.

B. Grounding conductors, where insulated, shall be colored solid green. Conductors intended asneutral shall be colored solid white on 120/208-volt circuits.

C. Bare Copper Conductors:

1. Solid Conductors: ASTM B 3.2. Stranded Conductors: ASTM B 8.


3. Tinned Conductors: ASTM B 33.4. Bonding Cable: 28 kcmil, 14 strands of No. 17 AWG conductor, 1/4 inch in diameter.5. Bonding Conductor: No. 4 or No. 6 AWG, stranded conductor.6. Bonding Jumper: Copper tape, braided conductors terminated with copper ferrules; 1-5/8

inches wide and 1/16 inch thick.7. Tinned Bonding Jumper: Tinned-copper tape, braided conductors terminated with copper

ferrules; 1-5/8 inches wide and 1/16 inch thick.

2.4 CONNECTORS

A. Listed and labeled by an NRTL acceptable to authorities having jurisdiction for applications inwhich used and for specific types, sizes, and combinations of conductors and other itemsconnected.

B. Bolted Connectors for Conductors and Pipes: Copper, bolted pressure-type, with at least twobolts.1. Pipe Connectors: Clamp type, sized for pipe.

C. Welded Connectors: Exothermic-welding kits of types recommended by kit manufacturer formaterials being joined and installation conditions.

D. Bus-Bar Connectors: Mechanical type, cast silicon bronze, solderless compression-type wireterminals, and long-barrel, two-bolt connection to ground bus bar.

2.5 GROUNDING ELECTRODES

A. Ground Rods: Copper-clad steel, 3/4 inch in diameter by 10 feet in length.

PART 3 - EXECUTION

3.1 APPLICATIONS

A. Conductors: Install solid conductor for No. 10 AWG and smaller, and stranded conductors forNo. 8 AWG and larger unless otherwise indicated.

A. Underground Grounding Conductors: Install bare copper conductor, 3/0 AWG minimum.

1. Bury at least 30 inches below grade.

B. Conductor Terminations and Connections:

1. Pipe and Equipment Grounding Conductor Terminations: Bolted connectors.2. Underground Connections: Exothermic weld connectors unless otherwise indicated.3. Connections to Ground Rods at Test Wells: Exothermic weld connectors.4. Connections to Structural Steel: Exothermic weld connectors.


3.2 GROUNDING AT THE SERVICE

A. Equipment grounding conductors and grounding electrode conductors shall be connected to theground bus. Install a main bonding jumper between the neutral and ground buses.

B. The electrical service shall be grounded by three (3) means:1. To the metallic cold-water pipe, as per NEC Article 250-52.2. To the steel frame of the building, provided the building frame is effectively grounded.3. To ground rod(s). Ground rods shall be size as indicated in section 2.5 per this

specification. All ground connections shall be accessible.

3.3 GROUNDING UNDERGROUND DISTRIBUTION SYSTEM COMPONENTS

A. Comply with IEEE C2 grounding requirements.

B. Grounding Handholes: Install a driven ground rod through manhole or handhole floor, close towall, and set rod depth so 4 inches will extend above finished floor. If necessary, install groundrod before manhole is placed and provide No. 1/0 AWG bare, copper conductor from groundrod into manhole through a waterproof sleeve in manhole wall. Protect ground rods passingthrough concrete floor with a double wrapping of pressure-sensitive insulating tape or heat-shrunk insulating sleeve from 2 inches above to 6 inches below concrete. Seal floor openingwith waterproof, non-shrink grout.

3.4 EQUIPMENT GROUNDING

A. Install insulated equipment grounding conductors with all feeders and branch circuits.

B. Install insulated equipment grounding conductors with the following items, in addition to thoserequired by NFPA 70:

1. Feeders and branch circuits.2. Lighting circuits.3. Receptacle circuits.4. Single-phase motor and appliance branch circuits.5. Three-phase motor and appliance branch circuits.6. Flexible raceway runs.7. Armored and metal-clad cable runs.

C. Air-Duct Equipment Circuits: Install insulated equipment grounding conductor to duct-mountedelectrical devices operating at 120V and more, including air cleaners, heaters, dampers,humidifiers, and other duct electrical equipment. Bond conductor to each unit and to air ductand connected metallic piping.

D. Water Heater, Heat-Tracing, and Antifrost Heating Cables: Install a separate insulatedequipment grounding conductor to each electric water heater and heat-tracing cable. Bondconductor to heater units, piping, connected equipment, and components.

E. Isolated Equipment Enclosure Circuits: For designated equipment supplied by a branch circuitor feeder, isolate equipment enclosure from supply circuit raceway with a nonmetallic raceway


fitting listed for the purpose. Install fitting where raceway enters enclosure, and install aseparate insulated equipment grounding conductor. Isolate conductor from raceway and frompanelboard grounding terminals. Terminate at equipment grounding conductor terminal of theapplicable derived system or service, unless otherwise indicated.

F. Signal and Communication Equipment: For telephone, alarm, voice and data, and othercommunication equipment, provide No. 4 AWG minimum insulated grounding conductor inraceway from grounding electrode system to each service location, terminal cabinet, wiringcloset, and central equipment location.

1. Service and Central Equipment Locations and Wiring Closets: Terminate groundingconductor on a 1/4-by-2-by-12-inch grounding bus.

2. Terminal Cabinets: Terminate grounding conductor on cabinet grounding terminal.

3.5 INSTALLATION

A. Grounding Conductors: Route along shortest and straightest paths possible unless otherwiseindicated or required by Code. Avoid obstructing access or placing conductors where they maybe subjected to strain, impact, or damage.

B. Grounding electrode conductor #4 AWG and larger shall be installed in raceway system.

C. Ground Rods: Drive rods until tops are 2 inches below finished floor or final grade unlessotherwise indicated.

1. Interconnect ground rods with grounding electrode conductor below grade and asotherwise indicated. Make connections without exposing steel or damaging coating ifany.

2. For grounding electrode system, install at least three rods spaced at least one-rod lengthfrom each other and located at least the same distance from other grounding electrodes,and connect to the service grounding electrode conductor.

D. Test Wells: Ground rod driven through drilled hole in bottom of handhole. Handholes arespecified in Section 260533 "Raceways and Boxes for Electrical Systems," and shall be at least12 inches deep, with cover.

1. Test Wells: Install at least one test well for each service unless otherwise indicated.Install at the ground rod electrically closest to service entrance. Set top of test well flushwith finished grade or floor.

E. Bonding Straps and Jumpers: Install in locations accessible for inspection and maintenanceexcept where routed through short lengths of conduit.

1. Bonding to Structure: Bond straps directly to basic structure, taking care not to penetrateany adjacent parts.

2. Bonding to Equipment Mounted on Vibration Isolation Hangers and Supports: Installbonding so vibration is not transmitted to rigidly mounted equipment.

3. Use exothermic-welded connectors for outdoor locations; if a disconnect-type connectionis required, use a bolted clamp.


F. Grounding and Bonding for Piping:

1. Metal Water Service Pipe: Install insulated copper grounding conductors, in conduit,from building's main service equipment, or grounding bus, to main metal water serviceentrances to building. Connect grounding conductors to main metal water service pipes;use a bolted clamp connector or bolt a lug-type connector to a pipe flange by using one ofthe lug bolts of the flange. Where a dielectric main water fitting is installed, connectgrounding conductor on street side of fitting. Bond metal grounding conductor conduit orsleeve to conductor at each end.

2. Water Meter Piping: Use braided-type bonding jumpers to electrically bypass watermeters. Connect to pipe with a bolted connector.

3. Bonding of piping systems and exposed structural metal shall be provided in compliancewith the requirements of NFPA 70 (NEC) article 250.104. Contractor shall provide allmaterials and labor as required to ensure that all new piping systems and exposedstructural metal is properly bonded to comply with NFPA 70 (NEC) article 250.104.

4. Bonding of all gas piping shall be provided in compliance with NFPA 70 (NEC) article250.104(B). Contractor shall provide all materials and labor as required to ensure that allnew gas piping is properly bonded to comply with NFPA 70 (NEC) article 250.104.

5. Make sure to clean all piping prior to installation of clamp connection. Make sure allconnections are tight to piping and coat with an exterior rated sealing compound toencapsulate grounding connection to prevent any future corrosion.

G. Bonding Interior Metal Ducts: Bond metal air ducts to equipment grounding conductors ofassociated fans, blowers, electric heaters, and air cleaners. Install bonding jumper to bondacross flexible duct connections to achieve continuity.

H. Raceway Systems:1. The raceway system shall not be relied on for ground continuity. A green grounding

conductor, properly sized per NEC Table 250-122, shall be run in all raceways except fortelecommunications, data and audio systems.

2. Boxes with concentric, eccentric or over-sized knockouts shall be provided with bondingbushings and jumpers. The jumper shall be sized per NEC Table 250-122 and lugged tothe box.

3. EMT terminations and couplings shall be made steel-plated hexagonal compressionconnectors. No pot metal, set-screw or indented type fittings shall be utilized.

4. IMC and GRC shall terminate with either a double locknut/bushing set, or in a threadedhub.

I. Identify each grounding electrode connected to a common ground bus. The height and thethickness of the common ground bus shall not be less than 2 inches high and 1/4 inch thick.


A. Perform tests and inspections as indicated below. Inspect physical and mechanical condition.Verify tightness of accessible, bolted, electrical connections with a calibrated torque wrenchaccording to manufacturer's written instructions.

B. Perform the following tests and inspections and prepare test reports:


1. After installing grounding system but before permanent electrical circuits have beenenergized, test for compliance with requirements.

2. Test completed grounding system at each location where a maximum ground-resistancelevel is specified, at service disconnect enclosure grounding terminal, and at ground testwells.

a. Measure ground resistance not less than two full days after last trace ofprecipitation and without soil being moistened by any means other than naturaldrainage or seepage and without chemical treatment or other artificial means ofreducing natural ground resistance.

b. Perform tests by fall-of-potential method according to IEEE 81.c. The ground resistance shall be tested with a ground resistance tester.

C. Report measured ground resistances that exceed the following values:

1. Power and Lighting Equipment or System with Capacity 500 kVA and Less: 25 ohms.2. Power and Lighting Equipment or System with Capacity 500 to 1000 kVA: 25 ohms.3. Power and Lighting Equipment or System with Capacity More Than 1000 kVA: 25

ohms.

D. Excessive Ground Resistance: Where test show resistance to ground is over 25 ohms,appropriate action should be taken to reduce the resistance to 25 ohms or less, by drivingadditional ground rods. The compliance should be demonstrated by retesting.


1847 HANGERS AND SUPPORTS FOR ELECTRICAL SYSTEMS 260529 - 1

SECTION 260529 - HANGERS AND SUPPORTS FOR ELECTRICAL SYSTEMS

PART 1 - GENERAL

1.1 SUMMARY

A. Section includes:

1. Hangers and supports for electrical equipment and systems.2. Construction requirements for concrete bases.

1.2 PERFORMANCE REQUIREMENTS

A. Delegated Design: Design supports for multiple raceways, including comprehensiveengineering analysis by a qualified professional engineer, using performance requirements anddesign criteria indicated.

B. Design supports for multiple raceways capable of supporting combined weight of supportedsystems and its contents.

C. Design equipment supports capable of supporting combined operating weight of supportedequipment and connected systems and components.

D. Rated Strength: Adequate in tension, shear, and pullout force to resist maximum loadscalculated or imposed for this Project, with a minimum structural safety factor of five times theapplied force.


A. Product Data: For steel slotted support systems.

B. Shop Drawings. Show fabrication and installation details and include calculations for thefollowing:

1. Trapeze hangers. Include Product Data for components.2. Steel slotted channel systems. Include Product Data for components.3. Equipment supports.


A. Welding certificates.

b. Cooper B-Line, Inc.ERICO International Corporation.

d. GS Metals Corp.Thomas & Betts Corporation.

f. Unistrut; Atkore International.


1.5 QUALITY ASSURANCE

A. Welding: Qualify procedures and personnel according to AWS D1.1/D1.1M, "StructuralWelding Code - Steel."


PART 2 - PRODUCTS

2.1 SUPPORT, ANCHORAGE, AND ATTACHMENT COMPONENTS

A. Steel Slotted Support Systems: Comply with MFMA-4, factory-fabricated components for fieldassembly.

1. Manufacturers: Subject to compliance with requirements, provide products by one of thefollowing:

a. Allied Tube & Conduit.b. Cooper B-Line, Inc.c. ERICO International Corporation.d. GS Metals Corp.e. Thomas & Betts Corporation.f. Unistrut; Atkore International.g. Wesanco, Inc.

2. Metallic Coatings: Hot-dip galvanized after fabrication and applied according to MFMA-4.

3. Nonmetallic Coatings: Manufacturer's standard PVC, polyurethane, or polyester coatingapplied according to MFMA-4.

4. Painted Coatings: Manufacturer's standard painted coating applied according to MFMA-4.

5. Channel Dimensions: Selected for applicable load criteria.

B. Raceway and Cable Supports: As described in NECA 1 and NECA 101.

C. Conduit and Cable Support Devices: Steel hangers, clamps, and associated fittings, designed fortypes and sizes of raceway or cable to be supported.

D. Support for Conductors in Vertical Conduit: Factory-fabricated assembly consisting of threadedbody and insulating wedging plug or plugs for non-armored electrical conductors or cables inriser conduits. Plugs shall have number, size, and shape of conductor gripping pieces asrequired to suit individual conductors or cables supported. Body shall be malleable iron.

E. Structural Steel for Fabricated Supports and Restraints: ASTM A 36/A 36M, steel plates,shapes, and bars; black and galvanized.

F. Mounting, Anchoring, and Attachment Components: Items for fastening electrical items or theirsupports to building surfaces include the following:


1. Mechanical-Expansion Anchors: Insert-wedge-type, stainless steel, for use in hardenedportland cement concrete with tension, shear, and pullout capacities appropriate forsupported loads and building materials in which used.

a. Manufacturers: Subject to compliance with requirements, provide products by oneof the following:

1) Cooper B-Line, Inc.2) Empire Tool and Manufacturing Co., Inc.3) Hilti, Inc.4) ITW Ramset/Red Head; Illinois Tool Works, Inc.5) MKT Fastening, LLC.

2. Concrete Inserts: Steel or malleable-iron, slotted support system units similar to MSSType 18; complying with MFMA-4 or MSS SP-58.

3. Clamps for Attachment to Steel Structural Elements: MSS SP-58, type suitable forattached structural element.

4. Through Bolts: Structural type, hex head and high strength. Comply with ASTM A 325.5. Toggle Bolts: All-steel springhead type.6. Hanger Rods: Threaded steel.

2.2 FABRICATED METAL EQUIPMENT SUPPORT ASSEMBLIES

A. Description: Welded or bolted, structural-steel shapes, shop or field fabricated to fit dimensionsof supported equipment.

B. Materials: Comply with requirements in Section 055000 "Metal Fabrications" for steel shapesand plates.

PART 3 - EXECUTION

3.1 APPLICATION

A. Comply with NECA 1 and NECA 101 for application of hangers and supports for electricalequipment and systems except if requirements in this Section are stricter.

B. Maximum Support Spacing and Minimum Hanger Rod Size for Raceway: Space supports forEMT, IMC, and RMC at a minimum distance of 8’-0” on center. Minimum rod size shall be 1/4inch in diameter.

C. Multiple Raceways or Cables: Install trapeze-type supports fabricated with steel slotted system,sized so capacity can be increased by at least 25 percent in future without exceeding specifieddesign load limits.

1. Secure raceways and cables to these supports with two-bolt conduit clamps.


D. Spring-steel clamps designed for supporting single conduits without bolts may be used for 1-1/2-inch and smaller raceways serving branch circuits and communication systems abovesuspended ceilings and for fastening raceways to trapeze supports.

E. Provide support spacing per NEC Article 350.30 for LFMC type conduits.

3.2 SUPPORT INSTALLATION

A. Comply with NECA 1 and NECA 101 for installation requirements except as specified in thisArticle.

B. Raceway Support Methods: In addition to methods described in NECA 1, EMT, IMC, andRMC may be supported by openings through structure members, as permitted in NFPA 70.

C. Strength of Support Assemblies: Where not indicated, select sizes of components so strengthwill be adequate to carry present and future static loads within specified loading limits.Minimum static design load used for strength determination shall be weight of supportedcomponents plus 200 lb.

D. Mounting and Anchorage of Surface-Mounted Equipment and Components: Anchor and fastenelectrical items and their supports to building structural elements by the following methodsunless otherwise indicated by code:

1. To Wood: Fasten with lag screws or through bolts rated for use on wood surfaces.2. To New Concrete: Bolt to concrete inserts.3. To Masonry: Approved toggle-type bolts on hollow masonry units and expansion anchor

fasteners on solid masonry units.4. To Existing Concrete: Expansion anchor fasteners.5. To Steel: Welded threaded studs complying with AWS D1.1/D1.1M, with lock washers

and nuts, Beam clamps (MSS Type 19, 21, 23, 25, or 27) complying with MSS SP-69 orSpring-tension clamps.

6. To Light Steel: Sheet metal screws or bolts.7. Items Mounted on Hollow Walls and Nonstructural Building Surfaces: Mount cabinets,

panelboards, disconnect switches, control enclosures, pull and junction boxes,transformers, and other devices on slotted-channel racks attached to substrate by meansthat meet seismic-restraint strength and anchorage requirements.

8. Metal expansion shields and machine screws, or standard pre-set inserts, on concrete orsolid masonry.

9. Power actuated fasteners are not allowed.

E. Drill holes for expansion anchors in concrete at locations and to depths that avoid reinforcingbars.

F. Raceway installed on interior of exterior building walls shall be spaced off the wall surface aminimum of 1/4 inch using “clamp backs” or strut.


3.3 INSTALLATION OF FABRICATED METAL SUPPORTS

A. Comply with installation requirements in Section 055000 "Metal Fabrications" for site-fabricated metal supports.

B. Cut, fit, and place miscellaneous metal supports accurately in location, alignment, and elevationto support and anchor electrical materials and equipment.

C. Field Welding: Comply with AWS D1.1/D1.1M.

3.4 CONCRETE BASES

A. Construct concrete bases of dimensions indicated but not less than 4 inches larger in bothdirections than supported unit, and so anchors will be a minimum of 10 bolt diameters fromedge of the base.

B. Use 3000-psi, 28-day compressive-strength concrete. Concrete materials, reinforcement andplacement requirements are specified in Section 033000 “Cast-in-Place Concrete”.

C. Anchor equipment to concrete base.

1. Place and secure anchorage devices. Use supported equipment manufacturer's settingdrawings, templates, diagrams, instructions, and directions furnished with items to beembedded.

2. Install anchor bolts to elevations required for proper attachment to supported equipment.3. Install anchor bolts according to anchor-bolt manufacturer's written instructions.

3.5 PAINTING

A. Touchup: Clean field welds and abraded areas of shop paint. Paint exposed areas immediatelyafter erecting hangers and supports. Use same materials as used for shop painting. Comply withSSPC-PA 1 requirements for touching up field-painted surfaces.

1. Apply paint by brush or spray to provide minimum dry film thickness of 2.0 mils.

B. Touchup: Comply with requirements in Section 099113 "Exterior Painting", Section 099123"Interior Painting” and Section 099600 "High Performance Coatings for cleaning and touchuppainting of field welds, bolted connections, and abraded areas of shop paint on miscellaneousmetal.

C. Galvanized Surfaces: Clean welds, bolted connections, and abraded areas and applygalvanizing-repair paint to comply with ASTM A 780.


1847 RACEWAYS AND BOXES FOR ELECTRICAL SYSTEM 260533 - 1

SECTION 260533 - RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS

PART 1 - GENERAL

1.1 SUMMARY


1. Metal conduits, tubing, and fittings.2. Nonmetal conduits, tubing, and fittings.3. Metal wireways and auxiliary gutters.4. Boxes, enclosures, and cabinets.5. Handholes and boxes for exterior underground cabling.


A. Product Data: For surface raceways, wireways and fittings, floor boxes, hinged-coverenclosures, and cabinets.

B. Shop Drawings: For custom enclosures and cabinets. Include plans, elevations, sections, andattachment details.


A. Coordination Drawings: Conduit routing plans, drawn to scale, on which the following itemsare shown and coordinated with each other, using input from installers of items involved:

1. Structural members in paths of conduit groups with common supports.2. HVAC and plumbing items and architectural features in paths of conduit groups with

common supports.

B. Seismic Qualification Certificates: For enclosures, cabinets, and conduit racks and theirmounting provisions, including those for internal components, from manufacturer.

PART 2 - PRODUCTS

2.1 METAL CONDUITS, TUBING, AND FITTINGS

A. Listing and Labeling: Metal conduits, tubing, and fittings shall be listed and labeled as definedin NFPA 70, by a qualified testing agency, and marked for intended location and application.

B. GRC: Comply with ANSI C80.1 and UL 6.

C. IMC: Comply with ANSI C80.6 and UL 1242.


D. EMT: Comply with ANSI C80.3 and UL 797.

E. FMC: Comply with UL 1; zinc-coated steel. Conduit shall be installed per NEC and providedwith a ground conductor.

F. LFMC: Flexible steel conduit with PVC jacket and complying with UL 360. Conduit shall beinstalled per NEC and provided with a ground conductor.

G. Fittings for Metal Conduit: Comply with NEMA FB 1 and UL 514B.

1. Conduit Fittings for Hazardous (Classified) Locations: Comply with UL 886 andNFPA 70.

2. Fittings for EMT:

a. Material: Steel.b. Type: compression.

3. Expansion Fittings: steel to match conduit type, complying with UL 651, rated forenvironmental conditions where installed, and including flexible external bondingjumper.

H. Joint Compound for IMC or GRC: Approved, as defined in NFPA 70, by authorities havingjurisdiction for use in conduit assemblies, and compounded for use to lubricate and protectthreaded conduit joints from corrosion and to enhance their conductivity.

2.2 NONMETALLIC CONDUITS, TUBING, AND FITTINGS

A. Listing and Labeling: Nonmetallic conduits, tubing, and fittings shall be listed and labeled asdefined in NFPA 70, by a qualified testing agency, and marked for intended location andapplication.

B. RNC: Type EPC-40-PVC, complying with NEMA TC 2 and UL 651 unless otherwiseindicated.

C. Fittings for RNC: Comply with NEMA TC 3; match to conduit or tubing type and material.

D. Solvent cements and adhesive primers shall have a VOC content of 510 and 550 g/L or less,respectively, when calculated according to 40 CFR 59, Subpart D (EPA Method 24).

E. Solvent cements and adhesive primers shall comply with the testing and product requirementsof the California Department of Health Services' "Standard Practice for the Testing of VolatileOrganic Emissions from Various Sources Using Small-Scale Environmental Chambers."

2.3 METAL WIREWAYS AND AUXILIARY GUTTERS

A. Description: Sheet metal, complying with UL 870 and NEMA 250, Type 1 (for buildinginterior) and Type 3R (for building exterior) unless otherwise indicated, and sized according toNFPA 70.


1. Metal wireways installed outdoors shall be listed and labeled as defined in NFPA 70, by aqualified testing agency, and marked for intended location and application.

B. Fittings and Accessories: Include covers, couplings, offsets, elbows, expansion joints, adapters,hold-down straps, end caps, and other fittings to match and mate with wireways as required forcomplete system.

2.4 BOXES, ENCLOSURES, AND CABINETS

A. General Requirements for Boxes, Enclosures, and Cabinets: Boxes, enclosures, and cabinetsinstalled in wet locations shall be listed for use in wet locations.

B. Sheet Metal Outlet and Device Boxes: Comply with NEMA OS 1 and UL 514A.

1. Stamped steel boxes with knockouts are not acceptable for surface mounting in areas thatare not conditioned and/or are open to the environmental elements.

C. Cast-Metal Outlet and Device Boxes: Comply with NEMA FB 1, ferrous alloy, Type FD, withgasketed cover.

D. Luminaire Outlet Boxes: Nonadjustable, designed for attachment of luminaire weighing 50 lb.Outlet boxes designed for attachment of luminaires weighing more than 50 lb shall be listed andmarked for the maximum allowable weight.

E. Small Sheet Metal Pull and Junction Boxes: NEMA OS 1.

F. Cast-Metal Access, Pull, and Junction Boxes: Comply with NEMA FB 1 and UL 1773,galvanized, cast iron with gasketed cover.

G. Box extensions used to accommodate new building finishes shall be of same material asrecessed box.

H. Device Box Dimensions: 4 inches square by 2-1/8 inches deep.

I. Gangable boxes are allowed.

2.5 HANDHOLES AND BOXES FOR EXTERIOR UNDERGROUND WIRING

A. General Requirements for Handholes and Boxes:

1. Boxes and handholes for use in underground systems shall be designed and identified asdefined in NFPA 70, for intended location and application.

2. Boxes installed in wet areas shall be listed and labeled as defined in NFPA 70, by aqualified testing agency, and marked for intended location and application.

B. Polymer-Concrete Handholes and Boxes with Polymer-Concrete Cover: Molded of sand andaggregate, bound together with polymer resin, and reinforced with steel, fiberglass, or acombination of the two.

1. Standard: Comply with SCTE 77.


2. Configuration: Designed for flush burial with open bottom unless otherwise indicated.3. Cover: Weatherproof, secured by tamper-resistant locking devices and having structural

load rating consistent with enclosure and handhole location.4. Cover Finish: Nonskid finish shall have a minimum coefficient of friction of 0.50.5. Cover Legend: Molded lettering, "ELECTRIC."6. Conduit Entrance Provisions: Conduit-terminating fittings shall mate with entering ducts

for secure, fixed installation in enclosure wall.

C. Fiberglass Handholes and Boxes: Molded of fiberglass-reinforced polyester resin, with frameand covers of fiberglass.

1. Standard: Comply with SCTE 77.2. Configuration: Designed for flush burial with open bottom unless otherwise indicated.3. Cover: Weatherproof, secured by tamper-resistant locking devices and having structural

load rating consistent with enclosure and handhole location.4. Cover Finish: Nonskid finish shall have a minimum coefficient of friction of 0.50.5. Cover Legend: Molded lettering, "ELECTRIC."6. Conduit Entrance Provisions: Conduit-terminating fittings shall mate with entering ducts

for secure, fixed installation in enclosure wall.

PART 3 - EXECUTION

3.1 RACEWAY APPLICATION

A. Outdoors: Apply raceway products as specified below unless otherwise indicated:

1. Exposed Conduit: GRC.2. Concealed Conduit, Aboveground: GRC.3. Underground Conduit: RNC, Type EPC-40-PVC.

a. RNC, Type EPC-40-PVC encased in concrete (3 inches thick on all sides) forservice entrance conductors.

4. Connection to Vibrating Equipment (Including Transformers and Hydraulic, Pneumatic,Electric Solenoid, or Motor-Driven Equipment): LFMC.

5. Boxes and Enclosures, Aboveground: NEMA 250, Type 3R.

B. Indoors: Apply raceway products as specified below unless otherwise indicated.

1. Telecommunications conduit larger than 2”: GRC.

2. Exposed, Not Subject to Physical Damage: EMT.3. Exposed, Not Subject to Severe Physical Damage: EMT.4. Exposed and Subject to Severe Physical Damage: GRC. Raceway locations include the

following:

a. Exterior Chiller Yardb. Mechanical Rooms

5. Concealed in Ceilings and Interior Walls and Partitions: EMT.


6. Connection to Vibrating Equipment (Including Transformers and Hydraulic, Pneumatic,Electric Solenoid, or Motor-Driven Equipment): FMC, except use LFMC in damp or wetlocations.

7. Damp or Wet Locations: GRC.8. Boxes and Enclosures: NEMA 250, Type 1, except use NEMA 250, Type 4 stainless

steel in kitchens and damp or wet locations.

C. Minimum Raceway Size: 3/4-inch trade size.

D. Raceway Fittings: Compatible with raceways and suitable for use and location.

1. Rigid and Intermediate Steel Conduit: Use threaded rigid steel conduit fittings unlessotherwise indicated. Comply with NEMA FB 2.10.

2. EMT: Use steel plated hexagonal compression fittings/couplings. Comply withNEMA FB 2.10. No pot metal, set screw or indented type fittings/couplings shall beutilized.

3. Flexible Conduit: Use only fittings listed for use with flexible conduit. Comply withNEMA FB 2.20.

E. Do not install aluminum conduits, boxes, or fittings in contact with concrete or earth.

F. Install surface raceways only where indicated on Drawings.

G. Do not install nonmetallic conduit where ambient temperature exceeds 120 deg F.

3.2 INSTALLATION

A. Comply with NECA 1 and NECA 101 for installation requirements except where requirementson Drawings or in this article are stricter. Comply with NECA 102 for aluminum conduits.Comply with NFPA 70 limitations for types of raceways allowed in specific occupancies andnumber of floors.

B. Keep raceways at least 6 inches away from parallel runs of flues and steam or hot-water pipes.Install horizontal raceway runs above water and steam piping.

C. Comply with requirements in Section 260529 "Hangers and Supports for Electrical Systems"for hangers and supports.

D. Complete raceway installation prior to starting conductor installation.

E. Arrange stub-ups so curved portions of bends are not visible above finished slab.

F. Install no more than the equivalent of three 90-degree bends in any conduit run except forcontrol wiring conduits, for which fewer bends are allowed. Support within 12 inches ofchanges in direction.

G. Conceal conduit and EMT within finished walls, ceilings, and floors unless otherwise indicated.Install conduits parallel or perpendicular to building lines.

H. Support conduit within 12 inches of enclosures to which attached.


I. Conduit, exposed and concealed shall be neatly installed parallel to, or at right angles to beams,walls and floors of building.

J. Raceways Embedded in Slabs:

1. Run conduit larger than 1-inch trade size, parallel or at right angles to mainreinforcement. Where at right angles to reinforcement, place conduit close to slabsupport. Secure raceways to reinforcement at maximum 10-foot intervals.

2. Arrange raceways to cross building expansion joints at right angles with expansionfittings.

3. Arrange raceways to keep a minimum of 1 inches of concrete cover in all directionsexcept for raceways containing service entrance conductors, which shall be a minimumof 3 inches of concrete cover on all sides.

4. Do not embed threadless fittings in concrete unless specifically approved by Architect foreach specific location.

5. Change from PVC to GRC before rising above floor.

K. Stub-ups to Above Recessed Ceilings:

1. Use EMT, IMC, or RMC for raceways.2. Use a conduit bushing or insulated fitting to terminate stub-ups not terminated in hubs or

in an enclosure.

L. Threaded Conduit Joints, Exposed to Wet, Damp, Corrosive, or Outdoor Conditions: Applylisted compound to threads of raceway and fittings before making up joints. Follow compoundmanufacturer's written instructions.

M. Raceway Terminations at Locations Subject to Moisture or Vibration: Use insulating bushingsto protect conductors including conductors smaller than No. 4 AWG.

N. Terminate threaded conduits into threaded hubs or with locknuts on inside and outside of boxesor cabinets. Install bushings on conduits up to 1-1/4-inch trade size and insulated throat metalbushings on 1-1/2-inch trade size and larger conduits terminated with locknuts. Install insulatedthroat metal grounding bushings on service conduits.

O. Install pull wires in empty raceways. Use polypropylene or monofilament plastic line with notless than 200-lb tensile strength. Leave at least 12 inches of slack at each end of pull wire. Capunderground raceways designated as spare above grade alongside raceways in use.

P. Install raceway sealing fittings at accessible locations according to NFPA 70 and fill them withlisted sealing compound. For concealed raceways, install each fitting in a flush steel box with ablank cover plate having a finish similar to that of adjacent plates or surfaces.

Q. Install devices to seal raceway interiors at accessible locations. Locate seals so no fittings orboxes are between the seal and the following changes of environments. Seal the interior of allraceways at the following points:

1. Where conduits pass from warm to cold locations, such as boundaries of refrigeratedspaces.

2. Where an underground service raceway enters a building or structure.3. Where conduits pass from conditioned and non-conditioned spaces.


4. Where otherwise required by NFPA 70.

R. Expansion-Joint Fittings:

1. Install type and quantity of fittings that accommodate temperature change listed for eachof the following locations:

a. Outdoor Locations Not Exposed to Direct Sunlight: 125 deg F temperature change.b. Outdoor Locations Exposed to Direct Sunlight: 155 deg F temperature change.c. Indoor Spaces Connected with Outdoors without Physical Separation: 125 deg F

temperature change.d. Attics: 135 deg F temperature change.

2. Install expansion fittings at all locations where conduits cross building or structureexpansion joints.

3. Install each expansion-joint fitting with position, mounting, and piston setting selectedaccording to manufacturer's written instructions for conditions at specific location at timeof installation. Install conduit supports to allow for expansion movement.

S. Flexible Conduit Connections: Comply with NEMA RV 3. Use a maximum of 72 inches offlexible conduit for recessed and semi-recessed luminaires, equipment subject to vibration,noise transmission, or movement; and for transformers and motors.

1. Use LFMC in damp or wet locations subject to severe physical damage.2. Use LFMC in damp or wet locations not subject to severe physical damage.

T. Mount boxes at heights indicated on Drawings. If mounting heights of boxes are notindividually indicated, give priority to ADA requirements. Install boxes with height measured tocenter of box unless otherwise indicated.

U. Recessed Boxes in Masonry Walls: Saw-cut opening for box in center of cell of masonry block,and install box flush with surface of wall. Prepare block surfaces to provide a flat surface for arain-tight connection between the boxes and cover plate or the supported equipment and box.

V. Horizontally separate boxes mounted on opposite sides of walls so they are not in the samevertical channel.

W. Locate boxes so that cover or plate will not span different building finishes.

X. Support boxes of three gangs or more from more than one side by spanning two framingmembers or mounting on brackets specifically designed for the purpose.

Y. Fasten junction and pull boxes to or support from building structure. Do not support boxes byconduits.

Z. All outlet boxes, junction boxes, and pull boxes shall have their covers and exterior visiblesurfaces painted with colors to match the surface color scheme indicated below. This includescovers on boxes above lift out and other type accessible ceilings. Material colors shall be:

1. Galvanized for 120/208-volt equipment2. Black for 277/480-volt equipment


3. Bright red for fire alarm4. Green for emergency systems5. Orange for telephone systems6. Brown for data systems7. White for paging8. Purple for TV systems9. Blue for audio visual10. Galvanized for HVAC controls11. Galvanized for communications (intercom system)12. Galvanized for security control (card reader system)13. Galvanized for video surveillance (camera system)14. Galvanized for network (backbone that connects the security closets)

AA. EMT may be utilized as permitted by the NEC, with the following restrictions. EMT conduit,couplings, elbows and fittings shall not be installed:

1. Any location outdoors, in direct contact with earth, or underground (in/below slab-ongrade or in earth).

2. Indoors in wet or damp locations, or in concrete, cinderblocks or bricks.3. Where exposed to severe corrosive influence and/or severe physical damage.4. Encase in concrete.5. For transition between EMT and rigid conduits, use junction box.

BB. The raceway system shall not be relied on for grounding continuity. See specification section260526 “Grounding and Bonding for Electrical Systems”.

CC. EMT conduit provided below roof deck shall be installed 1-1/2 inches away from the deck toallow for roofing screws not to penetrate the EMT conduit during reroofing.

DD. Conduits, JBs, Troughs, any enclosure when mounted outside on the walls, shall be off thewalls by one inch.

EE. The use of "LB's" shall be limited where possible. Where necessary to use "LB's" sized largerthan 2 inches, mogul units shall be installed.

FF. PVC schedule 40 shall not be used exposed or concealed in walls.

GG. IMC and GRC shall terminate with either a double locknut / bushing set, or in a threaded hub.

HH. Where concentric, eccentric or over-sized knockouts are encountered, a grounding-typeinsulated bushing shall be provided.

II. All conduits shall be provided with Insulated throat.

JJ. Conduit couplings for IMC, GRC and PVC shall be in accordance with the NEC.

3.3 INSTALLATION OF UNDERGROUND CONDUIT

A. Direct-Buried Conduit (For all raceways except for raceways installed for electrical serviceentrance conductors):


1. Excavate trench bottom to provide firm and uniform support for conduit. Prepare trenchbottom as specified in Section 312000 "Earth Moving" for pipe less than 6 inches innominal diameter.

2. Install backfill as specified in Section 312000 "Earth Moving."3. After installing conduit, backfill and compact. Start at tie-in point, and work toward end

of conduit run, leaving conduit at end of run free to move with expansion and contractionas temperature changes during this process. Firmly hand tamp backfill around conduit toprovide maximum supporting strength. After placing controlled backfill to within 12inches of finished grade, make final conduit connection at end of run and completebackfilling with normal compaction as specified in Section 312000 "Earth Moving."

4. Install manufactured duct elbows for stub-up at poles and equipment and at buildingentrances through floor unless otherwise indicated. Encase elbows for stub-up ductsthroughout length of elbow.

5. Install manufactured rigid steel conduit elbows for stub-ups at poles and equipment andat building entrances through floor.

a. Couple steel conduits to ducts with adapters designed for this purpose, and encasecoupling with 3 inches of concrete for a minimum of 12 inches on each side of thecoupling.

b. For stub-ups at equipment mounted on outdoor concrete bases and where conduitspenetrate building foundations, extend steel conduit horizontally a minimum of60 inches from edge of foundation or equipment base. Install insulated groundingbushings on terminations at equipment.

6. Underground Warning Tape: Comply with requirements in Section 260553"Identification for Electrical Systems."

B. Raceways run external to building foundation walls, with the exception of branch circuitraceways, shall be encased with a minimum of three (3) inches of concrete on all sides.

1. Encased raceways must have a minimum cover of eighteen (18) inches, except forraceways containing circuits with voltages above 600 volts, which must have a minimumcover of thirty (30) inches.

2. Encased raceways shall be of a type approved by the NEC as "suitable for concreteencasement."

C. Branch circuit raceways run underground external to building foundation walls shall be run inraceways installed in accordance with the NEC, and shall be of a type approved by the NEC as"suitable for direct burial." Minimum raceway size shall be 3/4 inch.

D. All underground raceways shall be identified by underground line marking tape located directlyabove the raceway at 6 to 8 inches below finished grade. Tape shall be permanent, brightcolored, continuous printed, plastic tape compounded for direct burial not less than 6 incheswide and 4 mils thick. Printed legend shall be indicative of general type of underground linebelow.

E. Raceways run underground internal to building foundation walls shall be of a type and installedby a method approved by the NEC.

F. Where underground raceways are required to turn up into cabinets, equipment, etc., and on topoles, the elbow required and the stub-up out of the slab or earth shall be of rigid steel.


G. Where passing through a "below grade" wall from a conditioned interior building space,raceways shall be sealed utilizing fittings similar and equal to OZ/GEDNEY type "FSK" thru-wall fitting with "FSKA" membrane clamp adapter if required.

3.4 INSTALLATION OF UNDERGROUND DUCTBANKS

A. Excavation and backfill shall conform to "Division 2" of the specifications except heavy-duty,hydraulic-operated compaction equipment shall not be used.

B. Trenches should be cut neatly and uniformly, sloping uniformly to required pitch.

C. Ducts should be pitched to drain toward manholes and hand-holes and away from buildings andequipment. Minimum slope shall be 4 inches in 100 feet. Where necessary to achieve thisbetween manholes, ducts should be sloped from a high point in the run to drain in bothdirections.

D. Concrete encased nonmetallic ducts shall be supported on plastic separators coordinated withduct size and spacing. Separators shall be spaced close enough to prevent sagging anddeforming of ducts. Separators to the earth and to ducts should be secured to prevent floatingduring placement of concrete. Steel or tie wires should not be used in such a way as to formconductive or magnetic loops around ducts or duct groups.

E. Waterproof marking cord shall be installed 130-pound tensile test (marked at least every foot),equivalent to Greenlee No. 435, in all ducts, including spares, after thoroughly rodding, clearingand swabbing all lines free of any and all obstructions.

F. All ducts should be sealed at terminations, using sealing compound and plugs, as required towithstand 15 psi minimum hydrostatic pressure.

G. After installation of the raceway system and before pulling the cables, the raceway system shallbe air tested to 15 psi hydrostatic pressure.

3.5 INSTALLATION OF UNDERGROUND HANDHOLES AND BOXES

A. Install handholes and boxes level and plumb and with orientation and depth coordinated withconnecting conduits to minimize bends and deflections required for proper entrances.

B. Unless otherwise indicated, support units on a level bed of crushed stone or gravel, graded from1/2-inch sieve to No. 4 sieve and compacted to same density as adjacent undisturbed earth.

C. Elevation: In paved areas, set so cover surface will be flush with finished grade. Set covers ofother enclosures 1 inch above finished grade.

D. Install handholes with bottom below frost line.

E. Field-cut openings for conduits according to enclosure manufacturer's written instructions. Cutwall of enclosure with a tool designed for material to be cut. Size holes for terminating fittingsto be used, and seal around penetrations after fittings are installed.


3.6 FIRESTOPPING

A. Install firestopping at penetrations of fire-rated floor and wall assemblies.

3.7 PROTECTION

A. Protect coatings, finishes, and cabinets from damage and deterioration.

1. Repair damage to galvanized finishes with zinc-rich paint recommended bymanufacturer.


Identification for raceways. Identification for conductors. Equipment identification labels. Miscellaneous identification products.

1847 IDENTIFICATION FOR ELECTRICAL SYSTEMS 260553 - 1

SECTION 260553 - IDENTIFICATION FOR ELECTRICAL SYSTEMS

PART 1 - GENERAL

1.1 SUMMARY


1. Identification for raceways.2. Identification for conductors.3. Equipment identification labels.4. Miscellaneous identification products.


A. Product Data: For each electrical identification product indicated.


A. Comply with ANSI A13.1.


C. Comply with 29 CFR 1910.144 and 29 CFR 1910.145.

D. Comply with ANSI Z535.4 for safety signs and labels.

E. Adhesive-attached labeling materials, including label stocks, laminating adhesives, and inksused by label printers, shall comply with UL 969.

PART 2 - PRODUCTS

2.1 POWER RACEWAY IDENTIFICATION MATERIALS

A. Colors for Raceways Carrying Circuits at 600 V or Less: Refer to Wake County Standardsindicated in chart below.

B. Colors for Junction Boxes and Covers for Raceways Carrying Circuits at 600V or Less: Refer toWake County Standards indicated in chart below.


System Junction Box and Cover Conduit Color Raceway Labels Comments

120/208V Equipment Galvanized Galvanized Label per Project Specs.277/480V Equipment Black Galvanized Label per Project Specs.

Fire Alarm Bright Red Red WhiteEmergency Systems Green Green Label per Project Specs.

Telephone Systems Orange Orange Label per Project Specs.Data Systems Brown Orange Label per Project Specs.Paging White Orange Label per Project Specs.TV Systems Purple Orange Label per Project Specs.

Audio Visual Blue Galvanized Label per Project Specs.

HVAC Controls Galvanized Blue Label per Project Specs.

Communications – ES Galvanized Yellow Orange Intercom SystemSecurity Control – ES Galvanized

gaGYellow Green Card Reader System

Video Surveillance – ES Galvanized Yellow Blue Camera SystemNetwork Galvanized Yellow Yellow Backbone that

connects the securityclosets

2.2 CONDUCTOR IDENTIFICATION MATERIALS

A. Color-Coding Conductor Tape: Colored, self-adhesive vinyl tape not less than 3 mils thick by 1to 2 inches wide.

2.3 EQUIPMENT IDENTIFICATION LABELS

A. Furnish install engraved laminated phenolic nameplates for all safety switches, panelboards,transformers, switchboards, motor control centers, lighting control panels and other electricalequipment supplied for the project for identification. Nameplates shall be securely attached toequipment with self-tapping stainless-steel screws; if the screw end is projected; otherwise“rivets” shall be used. Letters shall be approximately 1/2-inch-high minimum. For elevatedcomponents, increase size of labels and letters to those appropriate for viewing from the floor.Embossed, self-adhesive plastic tape is not acceptable for marking equipment.1. Nameplate colors shall be:

a. Blue surface with white core for 120/208-volt equipment.b. Bright red surface with white core for all equipment related to fire alarm system.c. Dark red (burgundy) surface with white core for all equipment related to security.d. Orange surface with white core for all equipment related to telephone systems.e. Brown surface with white core for all equipment related to data systems.f. White surface with black core for all equipment related to paging systems.g. Purple surface with white core for all equipment related to TV systems.


B. On each unit of equipment, install unique designation label that is consistent with wiringdiagrams, schedules, and Operation and Maintenance Manual. Apply labels to disconnectswitches and protection equipment, central or master units, control panels, control stations,terminal cabinets, and racks of each system. Systems include power, lighting, control,communication, signal, monitoring, alarm systems, phase, voltage etc. Nameplates shall besecurely attached to equipment with self-tapping stainless-steel screws; if the screw end isprojected; otherwise “rivets” shall be used and shall identify equipment controlled, attached,etc. Labels shall be color coded and text height shall be as outlined in the section above.

2.4 MISCELLANEOUS IDENTIFICATION PRODUCTS

A. Paint: Comply with requirements in painting Sections for paint materials and applicationrequirements. Select paint system applicable for surface material and location (exterior orinterior).

B. Fasteners for Labels and Signs: Self-tapping, stainless-steel screws or stainless-steel machinescrews with nuts and flat and lock washers.

PART 3 - EXECUTION

3.1 INSTALLATION

A. Location: Install identification materials and devices at locations for most convenient viewingwithout interference with operation and maintenance of equipment.

B. Apply identification devices to surfaces that require finish after completing finish work.

C. Self-Adhesive Identification Products: Clean surfaces before application, using materials andmethods recommended by manufacturer of identification device.

D. Attach signs and plastic labels that are not self-adhesive type with mechanical fastenersappropriate to the location and substrate.

E. System Identification Color-Coding Bands for Raceways and Cables: Each color-coding bandshall completely encircle cable or conduit. Place adjacent bands of two-color markings incontact, side by side. Locate bands at changes in direction, at penetrations of walls and floors,at 50-foot maximum intervals in straight runs, and at 25-foot maximum intervals in congestedareas.

F. Painted Identification: Comply with requirements in painting Sections for surface preparationand paint application.

3.2 IDENTIFICATION SCHEDULE

A. Accessible Raceways, 600 V or Less, for Service, Feeder, and Branch Circuits More Than 30 A,and 120 V to ground: Install labels at 20-foot maximum intervals.

All outlet boxes, junction boxes and pull boxes shall their covers and exterior visible surfaces painted with colors to match the surface color scheme outlined in section 2.3.A(1) of this specification section. This includes covers on boxes above lift-out and other type accessible ceilings. After paint had dried, the contents of the box shall be indicated with a permanent “black” marker on the outside of the cover. If box contains power, then the panel and circuitry # shall be indicated on the outside of the box. If box contains data, fire alarm, security, etc..., then the appropriate information shall be indicated so that the owner’s maintenance staff can identify the contents of the box without opening the box to investigate.


B. All outlet boxes, junction boxes and pull boxes shall their covers and exterior visible surfacespainted with colors to match the surface color scheme outlined in section 2.3.A(1) of thisspecification section. This includes covers on boxes above lift-out and other type accessibleceilings. After paint had dried, the contents of the box shall be indicated with a permanent“black” marker on the outside of the cover. If box contains power, then the panel and circuitry #shall be indicated on the outside of the box. If box contains data, fire alarm, security, etc…, thenthe appropriate information shall be indicated so that the owner’s maintenance staff can identifythe contents of the box without opening the box to investigate.

C. All empty conduit runs and conduit with conductors for future use shall be identified for use andshall indicate where they terminate. Identification shall be by tags or string with wire attached toconduit or outlet.

D. Power-Circuit Conductor Identification, 600 V or Less: For conductors in vaults, pull andjunction boxes, manholes, and handholes, use color-coding conductor tape to identify the phase.

1. Color-Coding for Phase and Voltage Level Identification, 600 V or Less: Use colorslisted below for ungrounded service, feeder and branch-circuit conductors.

a. Color shall be factory applied or field applied for sizes larger than No. 8 AWG, ifauthorities having jurisdiction permit.

b. Colors for 208/120-V Circuits:

1) Phase A: Black.2) Phase B: Red.3) Phase C: Blue.

c. Field-Applied, Color-Coding Conductor Tape: Apply in half-lapped turns for aminimum distance of 6 inches from terminal points and in boxes where splices ortaps are made. Apply last two turns of tape with no tension to prevent possibleunwinding. Locate bands to avoid obscuring factory cable markings.

E. Install instructional sign including the color-code for grounded and ungrounded conductorsusing adhesive-film-type labels.

F. Conductors to Be Extended in the Future: Attach marker tape to conductors and list source.

G. Auxiliary Electrical Systems Conductor Identification: Identify field-installed alarm, control,and signal connections.

1. Identify conductors, cables, and terminals in enclosures and at junctions, terminals, andpull points. Identify by system and circuit designation.

2. Use system of marker tape designations that is uniform and consistent with system usedby manufacturer for factory-installed connections.

3. Coordinate identification with Project Drawings, manufacturer's wiring diagrams, and theOperation and Maintenance Manual.


1847 ARC FLASH HAZARD ANALYSIS AND SHORT-CIRCUITCOORDINATION STUDY

260573.15 - 1

SECTION 260573.15 - ARC FLASH HAZARD ANALYSIS AND SHORT-CIRCUITCOORDINATION STUDY

PART 1 - GENERAL

1.1 SUMMARY


1. Short-Circuit Analysis.2. Protective Device Coordination Analysis.3. Arc Flash Hazard Analysis.


A. The studies shall be submitted to the design engineer prior to receiving final approval of thedistribution equipment shop drawings and/or prior to release of equipment drawings formanufacturing. If formal completion of the study may cause delays in equipment shipments,approval from the Engineer may be obtained for a preliminary submittal of data to ensure thatthe selection of device ratings and characteristics will be satisfactory to properly select thedistribution equipment. The formal study will be provided, as described below, to verifypreliminary findings.

B. The results of the short-circuit, protective device coordination and arc flash hazard analysisstudies shall be summarized in a final report. A minimum of five (5) bound copies of thecomplete final report shall be submitted. For large system studies, submittals requiring morethan five (5) copies of the report will be provided without the section containing the computerprintout of the short-circuit input and output data. Electronic PDF copies of the report shall beprovided upon request.

C. The report shall be signed and sealed by a professional engineer licensed within the State ofNorth Carolina. The professional engineer or record performing this study shall also meet all ofthe additional requirements as stated within this specification.

D. The report shall include the following sections:

1. Executive Summary including Introduction, Scope of Work andResults/Recommendations.

2. Short-Circuit Methodology Analysis Results and Recommendations3. Short-Circuit Device Evaluation Table4. Protective Device Coordination Methodology Analysis Results and Recommendations5. Protective Device Settings Table6. Time-Current Coordination Graphs and Recommendations7. Arc Flash Hazard Methodology Analysis Results and Recommendations including the

details of the incident energy and flash protection boundary calculations, along with ArcFlash boundary distances, working distances, Incident Energy levels and PersonalProtection Equipment levels.


260573.15 - 2

8. Arc Flash Labeling section showing types of labels to be provided. Section will containdescriptive information as well as typical label images.

9. One-line system diagram that shall be computer generated and will clearly identifyindividual equipment buses, bus numbers used in the short-circuit analysis, cable and busconnections between the equipment, calculated maximum short-circuit current at eachbus location, device numbers used in the time-current coordination analysis, and otherinformation pertinent to the computer analysis.

1.3 REFERENCES

A. All reports and studies shall comply with the requirements outlined in the following referencesand standards:

1. Institute of Electrical and Electronics Engineers, Inc. (IEEE):a. IEEE 141 – Recommended Practice for Electric Power Distribution and

Coordination of Industrial and Commercial Power Systemsb. IEEE 242 – Recommended Practice for Protection and Coordination of Industrial

and Commercial Power Systemsc. IEEE 399 – Recommended Practice for Industrial and Commercial Power System

Analysisd. IEEE 241 – Recommended Practice for Electric Power Systems in Commercial

Buildingse. IEEE 1015 – Recommended Practice for Applying Low-Voltage Circuit Breakers

Used in Industrial and Commercial Power Systems.f. IEEE 1584 – Guide for Performing Arc-Flash Hazard Calculations

2. American National Standards Institute (ANSI):a. ANSI C57.12.00 – Standard General Requirements for Liquid-Immersed

Distribution, Power, and Regulating Transformersb. ANSI C37.13 – Standard for Low Voltage AC Power Circuit Breakers Used in

Enclosuresc. ANSI C37.010 – Standard Application Guide for AC High Voltage Circuit

Breakers Rated on a Symmetrical Current Basisd. ANSI C 37.41 – Standard Design Tests for High Voltage Fuses, Distribution

Enclosed Single-Pole Air Switches, Fuse Disconnecting Switches and Accessories.

3. The National Fire Protection Association (NFPA)a. NFPA 70 – National Electrical Code, latest editionb. NFPA 70E – Standard for Electrical Safety in the Workplace

1.4 QUALIFICAITONS

A. The short-circuit, protective device coordination and arc flash hazard analysis studies shall beconducted under the responsible charge and approval of a Registered Professional ElectricalEngineer skilled in performing and interpreting the power system studies and licensed in thesame state in which the project is being constructed.


260573.15 - 3

B. The Registered Professional Electrical Engineer shall be an employee of the equipmentmanufacturer or an approved engineering firm and shall have a minimum of five (5) years ofexperience in performing power system studies.

C. The approved engineering firm shall demonstrate experience with Arc Flash Hazard Analysisby submitting names of at least ten actual arc flash hazard analyses it has performed in the pastyear and shall have a minimum of twenty-five (25) years experience in performing powersystem studies.

D. Calibration, testing, adjustment, and placing into service of the protective devices shall beaccomplished by a manufacturer’s product field service engineer or independent testingcompany with a minimum of two years of current product experience in protective devices.

PART 2 - PRODUCTS

2.1 STUDIES

A. The contractor shall furnish an Arc Flash Hazard Analysis Study per NFPA 70E – Standard forElectrical Safety in the Workplace, reference Article 130.3 and Annex D. This study shall alsoinclude short-circuit and protective device coordination studies.

2.2 DATA

A. Contractor shall furnish all data as required for the power system studies. The Engineerperforming the short-circuit, protective device coordination and arc flash hazard analysis studiesshall furnish the Contractor with a listing of required data immediately after award of thecontract. The Contractor shall expedite collection of the data to assure completion of the studiesas required for final approval of the distribution equipment shop drawings and/or prior to therelease of the equipment for manufacturing.

B. Source combination may include present and future motors and generators.

C. Load data utilized may include existing and proposed loads obtained from Contract Documentsprovided by Owner, or Contractor.

D. If applicable, include fault contribution of existing motors in the study. The Contractor shallobtain required existing equipment data, if necessary, to satisfy the study requirements.

2.3 SHORT-CIRCUIT ANALYSIS

A. Transformer design impedances shall be used when test impedances are not available.

B. Provide the following:

1. Calculation methods and assumptions2. Selected base per unit quantities3. One-line diagram of the system being evaluated that clearly identifies individual

equipment buses, bus numbers used in the short-circuit analysis, cable and bus

connections between the equipment, calculated maximum short-circuit current at each bus location and other information pertinent to the computer analysis The study shall include input circuit data including electric utility system characteristics, source impedance data, conductor lengths, number of conductors per phase, conductor impedance values, insulation types, transformer impedances and X/R ratios, motor contributions, and other circuit information as related to the short-circuit calculations. Tabulations of calculated quantities including short-circuit currents, X/R ratios, equipment short-circuit interrupting or withstand current ratings and notes regarding adequacy or inadequacy of the equipment rating.Results, conclusions, and recommendations. A comprehensive discussion section evaluating the adequacy or inadequacy of the equipment must be provided and include recommendations as appropriate for improvements to the system.Maximum available fault current of the new service switchboard and the date this fault current was calculated. (Information will be utilized for the field marking requirements of NEC 110.24.

4.

5.

6.

7.

C. For solidly-grounded systems, provide a bolted line-to-ground fault current study for applicable buses as determined by the engineer performing the study.

Protective Device Evaluation:D.

Evaluate equipment and protective devices and compare to short circuit ratings Adequacy of switchgear, motor control centers, and panelboard bus bars to withstand short-circuit stressesContractor shall notify Architect in writing, of any circuit protective devices improperly rated for the calculated available fault current.

1.

2.

3.

PROTECTIVE DEVICE TIME-CURRENT COORDINATION ANALYSIS2.4

A. Protective device coordination time-current curves (TCC) shall be displayed on log-log scale graphs.

Include on each TCC graph, a complete title with descriptive device names.B.

C. Terminate device characteristic curves at a point reflecting maximum symmetrical or asymmetrical fault current to which the device is exposed.

Identify the device associated with each curve by manufacturer type, function, and, if applicable, tap, time delay, and instantaneous settings recommended.

D.

Plot the following characteristics on the TCC graphs, where applicable:E.

Electric utility's overcurrent protective device Medium voltage equipment overcurrent relaysMedium and low voltage fuses including manufacturer's minimum melt, total clearing, tolerance, and damage bandsLow voltage equipment circuit breaker trip devices, including manufacturer's tolerance bandsTransformer full-load current, magnetizing inrush current, and ANSI through-fault protection curves

1.

2.

3.

4.

5.

ARC FLASH HAZARD ANALYSIS AND SHORT-CIRCUIT COORDINATION STUDY

1847 260573.15 -41847 ARC FLASH HAZARD ANALYSIS AND SHORT-CIRCUITCOORDINATION STUDY

260573.15 - 4

connections between the equipment, calculated maximum short-circuit current at eachbus location and other information pertinent to the computer analysis

4. The study shall include input circuit data including electric utility system characteristics,source impedance data, conductor lengths, number of conductors per phase, conductorimpedance values, insulation types, transformer impedances and X/R ratios, motorcontributions, and other circuit information as related to the short-circuit calculations.

5. Tabulations of calculated quantities including short-circuit currents, X/R ratios,equipment short-circuit interrupting or withstand current ratings and notes regardingadequacy or inadequacy of the equipment rating.

6. Results, conclusions, and recommendations. A comprehensive discussion sectionevaluating the adequacy or inadequacy of the equipment must be provided and includerecommendations as appropriate for improvements to the system.

7. Maximum available fault current of the new service switchboard and the date this faultcurrent was calculated. (Information will be utilized for the field marking requirements ofNEC 110.24.

C. For solidly-grounded systems, provide a bolted line-to-ground fault current study for applicablebuses as determined by the engineer performing the study.

D. Protective Device Evaluation:

1. Evaluate equipment and protective devices and compare to short circuit ratings2. Adequacy of switchgear, motor control centers, and panelboard bus bars to withstand

short-circuit stresses3. Contractor shall notify Architect in writing, of any circuit protective devices improperly

rated for the calculated available fault current.

2.4 PROTECTIVE DEVICE TIME-CURRENT COORDINATION ANALYSIS

A. Protective device coordination time-current curves (TCC) shall be displayed on log-log scalegraphs.

B. Include on each TCC graph, a complete title with descriptive device names.

C. Terminate device characteristic curves at a point reflecting maximum symmetrical orasymmetrical fault current to which the device is exposed.

D. Identify the device associated with each curve by manufacturer type, function, and, ifapplicable, tap, time delay, and instantaneous settings recommended.

E. Plot the following characteristics on the TCC graphs, where applicable:

1. Electric utility’s overcurrent protective device2. Medium voltage equipment overcurrent relays3. Medium and low voltage fuses including manufacturer’s minimum melt, total clearing,

tolerance, and damage bands4. Low voltage equipment circuit breaker trip devices, including manufacturer’s tolerance

bands5. Transformer full-load current, magnetizing inrush current, and ANSI through-fault

protection curves

Medium voltage conductor damage curves Ground fault protective devices, as applicablePertinent motor starting characteristics and motor damage points, where applicablePertinent generator short-circuit decrement curve and generator damage pointThe largest feeder circuit breaker in each motor control center and applicable panelboard.

6.

7.8.

9.10.

Provide adequate time margins between device characteristics such that selective operation is provided, while providing proper protection.

F.

G. Provide the following:

A One-line diagram shall be provided which clearly identifies individual equipment buses, bus numbers, device identification numbers and the maximum available short- circuit current at each bus when known.A sufficient number of log-log plots shall be provided to indicate the degree of system protection and coordination by displaying the time-current characteristics of series connected overcurrent devices and other pertinent system parameters.Computer printouts shall accompany the log-log plots and will contain descriptions for each of the devices shown, settings of the adjustable devices, and device identification numbers to aid in locating the devices on the log-log plots and the system one-line diagram.The study shall include a separate, tabular printout containing the recommended settings of all adjustable overcurrent protective devices, the equipment designation where the device is located, and the device number corresponding to the device on the system one- line diagramA discussion section which evaluates the degree of system protection and service continuity with overcurrent devices, along with recommendations as required for addressing system protection or device coordination deficiencies.Contractor shall notify Architect in writing of any significant deficiencies in protection and/or coordination. Provide recommendations for improvements.

1.

2.

3.

4.

5.

6.

ARC FLASH HAZARD ANALYSIS2.5

A. The arc flash hazard analysis shall be performed according to the IEEE 1584 equations that are presented in NFPA70E-2009, Annex D. The arc flash hazard analysis shall be performed in conjunction with the short-circuit analysis (Section 2.03) and the protective device time-current coordination analysis (Section 2.04)

The flash protection boundary and the incident energy shall be calculated at significant locations in the electrical distribution system (switchboards, switchgear, motor-control centers, panelboards, busway and splitters) where work could be performed on energized parts.

B.

C. Circuits 240V or less fed by single transformer rated less than 125 kVA may be omitted from the computer model and will be assumed to have a hazard risk category 0 per NFPA 70E.

Working distances shall be based on IEEE 1584. The calculated arc flash protection boundary shall be determined using those working distances.

D.

When appropriate, the short circuit calculations and the clearing times of the phase overcurrent devices will be retrieved from the short-circuit and coordination study model. Ground

E.

ARC FLASH HAZARD ANALYSIS AND SHORT-CIRCUIT COORDINATION STUDY

1847 260573.15 -51847 ARC FLASH HAZARD ANALYSIS AND SHORT-CIRCUITCOORDINATION STUDY

260573.15 - 5

6. Medium voltage conductor damage curves7. Ground fault protective devices, as applicable8. Pertinent motor starting characteristics and motor damage points, where applicable9. Pertinent generator short-circuit decrement curve and generator damage point10. The largest feeder circuit breaker in each motor control center and applicable panelboard.

F. Provide adequate time margins between device characteristics such that selective operation isprovided, while providing proper protection.

G. Provide the following:

1. A One-line diagram shall be provided which clearly identifies individual equipmentbuses, bus numbers, device identification numbers and the maximum available short-circuit current at each bus when known.

2. A sufficient number of log-log plots shall be provided to indicate the degree of systemprotection and coordination by displaying the time-current characteristics of seriesconnected overcurrent devices and other pertinent system parameters.

3. Computer printouts shall accompany the log-log plots and will contain descriptions foreach of the devices shown, settings of the adjustable devices, and device identificationnumbers to aid in locating the devices on the log-log plots and the system one-linediagram.

4. The study shall include a separate, tabular printout containing the recommended settingsof all adjustable overcurrent protective devices, the equipment designation where thedevice is located, and the device number corresponding to the device on the system one-line diagram

5. A discussion section which evaluates the degree of system protection and servicecontinuity with overcurrent devices, along with recommendations as required foraddressing system protection or device coordination deficiencies.

6. Contractor shall notify Architect in writing of any significant deficiencies in protectionand/or coordination. Provide recommendations for improvements.

2.5 ARC FLASH HAZARD ANALYSIS

A. The arc flash hazard analysis shall be performed according to the IEEE 1584 equations that arepresented in NFPA70E-2009, Annex D. The arc flash hazard analysis shall be performed inconjunction with the short-circuit analysis (Section 2.03) and the protective device time-currentcoordination analysis (Section 2.04)

B. The flash protection boundary and the incident energy shall be calculated at significantlocations in the electrical distribution system (switchboards, switchgear, motor-control centers,panelboards, busway and splitters) where work could be performed on energized parts.

C. Circuits 240V or less fed by single transformer rated less than 125 kVA may be omitted fromthe computer model and will be assumed to have a hazard risk category 0 per NFPA 70E.

D. Working distances shall be based on IEEE 1584. The calculated arc flash protection boundaryshall be determined using those working distances.

E. When appropriate, the short circuit calculations and the clearing times of the phase overcurrentdevices will be retrieved from the short-circuit and coordination study model. Ground


260573.15 - 6

overcurrent relays should not be taken into consideration when determining the clearing timewhen performing incident energy calculations

F. The short-circuit calculations and the corresponding incident energy calculations for multiplesystem scenarios must be compared and the greatest incident energy must be uniquely reportedfor each equipment location in a single table. Calculations must be performed to represent themaximum and minimum contributions of fault current magnitude for normal and emergencyoperating conditions. The minimum calculation will assume that the utility contribution is at aminimum. Conversely, the maximum calculation will assume a maximum contribution from theutility. Calculations shall take into consideration the parallel operation of synchronousgenerators with the electric utility, where applicable as well as any stand-by generatorapplications.

The Arc-Flash Hazard Analysis shall be performed utilizing mutually agreed upon facilityoperational conditions, and the final report shall describe, when applicable, how theseconditions differ from worst-case bolted fault conditions.

G. The incident energy calculations must consider the accumulation of energy over time whenperforming arc flash calculations on buses with multiple sources. Iterative calculations musttake into account the changing current contributions, as the sources are interrupted ordecremented with time. Fault contribution from motors should be decremented as follows:

1. Fault contribution from induction motors should not be considered beyond 5 cycles.

H. For each piece of ANSI rated equipment with an enclosed main device, two calculations shallbe made. A calculation shall be made for the main cubicle, sides, or rear; and shall be based ona device located upstream of the equipment to clear the arcing fault. A second calculation shallbe made for the front cubicles and shall be based on the equipment’s main device to clear thearcing fault. For all other non-ANSI rated equipment, only one calculation shall be requiredand it shall be based on a device located upstream of the equipment to clear the arcing fault.

I. When performing incident energy calculations on the line side of a main breaker (as requiredper above), the line side and load side contributions must be included in the fault calculation.

J. Mis-coordination should be checked amongst all devices within the branch containing theimmediate protective device upstream of the calculation location and the calculation shouldutilize the fastest device to compute the incident energy for the corresponding location.

K. Arc Flash calculations shall be based on actual overcurrent protective device clearing time. Amaximum clearing time of 2 seconds will be used based on IEEE 1584-2002 section B.1.2.Where it is not physically possible to move outside of the flash protection boundary in less than2 seconds during an arc flash event, a maximum clearing time based on the specific locationshall be utilized.

L. Provide the following:

1. Results of the Arc-Flash Hazard Analysis shall be submitted in tabular form, and shallinclude device or bus name, bolted fault and arcing fault current levels, flash protectionboundary distances, working distances, personal-protective equipment classes and AFIE(Arc Flash Incident Energy) levels.


260573.15 - 7

2. The Arc-Flash Hazard Analysis shall report incident energy values based onrecommended device settings for equipment within the scope of the study.

3. The Arc-Flash Hazard Analysis may include recommendations to reduce AFIE levels andenhance worker safety.

PART 3 - EXECUTION

3.1 FIELD ADJUSTMENT

A. Contractor shall adjust relay and protective device settings according to the recommendedsettings table provided by the coordination study.

B. Contractor shall make minor modifications to equipment as required to accomplishconformance with short circuit and protective device coordination studies.

C. Contractor shall notify Architect in writing of any required major equipment modifications.

3.2 ARC FLASH LABELS

A. Provide a minimum 4.0 in. x 4.0 in. thermal transfer type label of high adhesion polyester foreach work location analyzed.

B. The labels shall be designed according to the following standards:

1. UL969 – Standard for Marking and Labeling Systems2. ANSI Z535.4 – Product Safety Signs and Labels3. NFPA 70 (National Electric Code) – Article 110.16

C. The label shall include the following information:1. System Voltage2. Flash protection boundary3. Personal Protective Equipment category4. Arc Flash Incident energy value (cal/cm²)5. Limited, restricted, and prohibited Approach Boundaries6. Study report number and issue date

D. Labels shall be printed by a thermal transfer type printer, with no field markings.

E. Arc flash labels shall be provided for equipment as identified in the study and the respectiveequipment access areas per the following:

1. Floor Standing Equipment - Labels shall be provided on the front of each individualsection. Equipment requiring rear and/or side access shall have labels provided on eachindividual section access area. Equipment line-ups containing sections with multipleincident energy and flash protection boundaries shall be labeled as identified in the ArcFlash Analysis table.

2. Wall Mounted Equipment – Labels shall be provided on the front cover or a nearbyadjacent surface, depending upon equipment configuration.


260573.15 - 8

3. General Use Safety labels shall be installed on equipment in coordination with the ArcFlash labels. The General Use Safety labels shall warn of general electrical hazardsassociated with shock, arc flash, and explosions, and instruct workers to turn off powerprior to work.

3.3 ARC FLASH TRAINING

A. The vendor supplying the Arc Flash Hazard Analysis shall train the owner’s qualified electricalpersonnel of the potential arc flash hazards associated with working on energized equipment(minimum of 4 hours). The training shall be certified for continuing education units (CEUs) bythe International Association for Continuing Education Training (IACET) or equivalent.The trainer shall be an authorized OSHA Outreach instructor.

B. The vendor supplying the Arc Flash Hazard Analysis shall offer instructor led and online NFPA70E training classes.

END OF SECTION 260573.15

1847 LIGHTING CONTROL DEVICES 260923 - 1

SECTION 260923 - LIGHTING CONTROL DEVICES

PART 1 - GENERAL

1.1 SUMMARY


1. Indoor occupancy, switchbox-mounted occupancy and outdoor motion sensors.

B. Related Requirements:

1. Section 262726 "Wiring Devices" for manual light switches.


A. Product Data: For each type of product. Indicate voltage, wattage, coverage, recommendedmounting height, wiring diagrams, & device color. Provide submittals for all necessarycomponents.

B. Occupancy sensor manufacturer shall provide scaled floor plan(s) indicating sensor placementas required to provide complete coverage of each space indicated on the plans as requiringoccupancy sensor control. The manufacturer shall recommend proper technology, placement,and position of the sensors according to best practices of the manufacturer’s product. Devicelocations shall be closely coordinated with other trades (HVAC, fire protection, etc.) to ensuremanufacturer recommended separation is maintained between occupancy sensor devices anddiffusers, sprinkler heads, etc.. The floor plan(s) shall include identifiers to clearly indicate eachdevice’s part number, technology (PIR, Ultrasonic, or Dual), mounting type, and height at aminimum.



1.4 CLOSEOUT SUBMITTALS

A. Operation and maintenance data

PART 2 - PRODUCTS

2.1 INDOOR OCCUPANCY SENSORSA. Manufacturers: Subject to compliance with requirements, provide products by one of the

following:


1. Hubbell Building Automation, Inc.2. Leviton Manufacturing Co., Inc.3. Sensor Switch, Inc.4. Wattstopper; Legrand

B. General Requirements for Low-Voltage Sensors: Wall- or ceiling-mounted, solid-state indooroccupancy sensors with a separate power pack.

1. Listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked forintended location and application.

2. Operation: Unless otherwise indicated, turn lights on when coverage area is occupied,and turn them off when unoccupied; with a time delay for turning lights off, adjustableover a minimum range of 1 to 30 minutes.

3. Sensor Output: Contacts rated to operate the connected relay, complying with UL 773A.Sensor is powered from the power pack.

4. Power Pack: Dry contacts rated for 20-A ballast load at 120- and 277-V ac, for 13-Atungsten at 120-V ac, and for 1 hp at 120-V ac. Sensor has 24-V dc, 150-mA, Class 2power source, as defined by NFPA 70.

5. Mounting:

a. Sensor: Suitable for mounting in any position on a standard outlet box.b. Relay: Externally mounted through a 1/2-inch knockout in a standard electrical

enclosure.c. Time-Delay and Sensitivity Adjustments: Recessed and concealed behind hinged

door.

6. Indicator: LED, to show when motion is detected during testing and normal operation ofsensor.

7. Bypass Switch: Override the "on" function in case of sensor failure.8. Automatic Light-Level Sensor: Adjustable from 2 to 200 fc; turn lights off when selected

lighting level is present.

C. General Requirements for Line-Voltage Sensors: Wall mounted, solid-state indoor occupancysensors.


2. Operation: Unless otherwise indicated, turn lights on when coverage area is occupied,and turn them off when unoccupied; with a time delay for turning lights off, adjustableover a minimum range of 1 to 30 minutes.

3. Sensor Output: Contacts rated to operate the connected relay, complying with UL 773A.Sensor is powered from the power pack.

4. Power Pack: Dry contacts rated for 20-A ballast load at 120- and 277-V ac, for 13-Atungsten at 120-V ac, and for 1 hp at 120-V ac. Sensor has 24-V dc, 150-mA, Class 2power source, as defined by NFPA 70.

5. Mounting:

a. Sensor: Suitable for mounting in any position on a standard outlet box.b. Relay: Externally mounted through a 1/2-inch knockout in a standard electrical

enclosure.

Standard Range: 210-degree field of view, with a minimum coverage area of 900 sq. ft. Sensing Technology: Dual technology - PIR and ultrasonic.Switch Type: SP, field selectable automatic "on," or manual "on" automatic "off." Voltage: 120 V; dual-technology type.Ambient-Light Override: Concealed, field-adjustable, light-level sensor from 10 to 150 fc. The switch prevents the lights from turning on when the light level is higher than the set point of the sensor.Concealed, field-adjustable, "off" time-delay selector at up to 30 minutes.Concealed "off" time-delay selector at 30 seconds, and 5, 10, and 20 minutes.


c. Time-Delay and Sensitivity Adjustments: Recessed and concealed behind hingeddoor.

6. Indicator: LED, to show when motion is detected during testing and normal operation ofsensor.

7. Bypass Switch: Override the "on" function in case of sensor failure.8. Automatic Light-Level Sensor: Adjustable from 2 to 200 fc; turn lights off when selected

lighting level is present.

D. Dual-Technology Type: Ceiling mounted; detect occupants in coverage area using PIR andultrasonic detection methods. The particular technology or combination of technologies thatcontrol on-off functions is selectable in the field by operating controls on unit.

1. Sensitivity Adjustment: Separate for each sensing technology.2. Detector Sensitivity: Detect occurrences of 6-inch minimum movement of any portion of

a human body that presents a target of not less than 36 sq. in., and detect a person ofaverage size and weight moving not less than 12 inches in either a horizontal or a verticalmanner at an approximate speed of 12 inches/s.

3. Detection Coverage (Standard Room): Detect occupancy anywhere within a circular areaof 1000 sq. ft. when mounted on a 96-inch high ceiling.

2.2 SWITCHBOX-MOUNTED OCCUPANCY SENSORS


1. Hubbell Building Automation, Inc.2. Leviton Manufacturing Co., Inc.3. Sensor Switch, Inc.4. Watt Stopper.

B. General Requirements for Sensors: Automatic-wall-switch occupancy sensor, suitable formounting in a single gang switchbox.


2. Operating Ambient Conditions: Dry interior conditions, 32 to 120 deg F.3. Switch Rating: Not less than 800-VA LED at 120 V.

C. Wall-Switch Sensor:

1. Standard Range: 210-degree field of view, with a minimum coverage area of 900 sq. ft.2. Sensing Technology: Dual technology - PIR and ultrasonic.3. Switch Type: SP, field selectable automatic "on," or manual "on" automatic "off."4. Voltage: 120 V; dual-technology type.5. Ambient-Light Override: Concealed, field-adjustable, light-level sensor from 10 to 150

fc. The switch prevents the lights from turning on when the light level is higher than theset point of the sensor.

6. Concealed, field-adjustable, "off" time-delay selector at up to 30 minutes.7. Concealed "off" time-delay selector at 30 seconds, and 5, 10, and 20 minutes.


8. Adaptive Technology: Self-adjusting circuitry detects and memorizes usage patterns ofthe space and helps eliminate false "off" switching.

2.3 CONDUCTORS AND CABLES

A. Power Wiring to Supply Side of Remote-Control Power Sources: Not smaller than No. 12AWG. Comply with requirements in Section 260519 "Low-Voltage Electrical PowerConductors and Cables."

B. Classes 2 and 3 Control Cable: Multiconductor cable with stranded-copper conductors notsmaller than No. 24 AWG. Comply with requirements in Section 260519 "Low-VoltageElectrical Power Conductors and Cables."

C. Class 1 Control Cable: Multiconductor cable with stranded-copper conductors not smaller thanNo. 18 AWG. Comply with requirements in Section 260519 "Low-Voltage Electrical PowerConductors and Cables."

PART 3 - EXECUTION

3.1 INSTALLATION

A. Install and aim sensors in locations to achieve not less than 90 percent coverage of areasindicated. Do not exceed coverage limits specified in manufacturer's written instructions.

B. Occupancy Adjustments: The contractor shall provide (2) visits to the project site after theowner has occupied the building to adjust lighting control system and all associated sensors asrequired by the owner. The contractor shall provide on-site assistance in adjusting the system tosuit actual occupied conditions. The first visit shall be 30 days after the owner has occupied thefacility. The second visit shall be 90 days after the owner has occupied the facility. Site visits toProject shall be made during other-than-normal occupancy hours for this purpose. All site visitsshall be coordinated with the owning agency prior to scheduling any visits in order to adjust theoccupancy sensors. Two copies of a written, bound summary shall be provided, for futurereference. Refer to Division 1 Section Closeout Procedures and Demonstration and Training.

1. For occupancy and motion sensors, verify operation at outer limits of detector range. Settime delay to suit Owner's operations.

C. Mount electrically held lighting contactors with elastomeric isolator pads to eliminate structure-borne vibration, unless contactors are installed in an enclosure with factory-installed vibrationisolators.

D. Wiring Method: Comply with Section 260519 "Low-Voltage Electrical Power Conductors andCables." Minimum conduit size is 1/2 inch.

E. Identify components and power and control wiring according to Section 260553 "Identificationfor Electrical Systems."



A. Testing Agency: Engage a qualified testing agency to evaluate lighting control devices andperform tests and inspections.

B. Perform the following tests and inspections with the assistance of a factory-authorized servicerepresentative:

1. Operational Test: After installing time switches and sensors, and after electrical circuitryhas been energized, start units to confirm proper unit operation.

2. Test and adjust controls and safeties. Replace damaged and malfunctioning controls andequipment.

C. Lighting control devices will be considered defective if they do not pass tests and inspections.


1847 SWITCHBOARDS 262413 - 1

SECTION 262413 - SWITCHBOARDS

PART 1 - GENERAL

1.1 SUMMARY


1. Service and distribution switchboards rated 600 V and less.2. Transient voltage suppression devices.3. Disconnecting and overcurrent protective devices.4. Instrumentation.5. Control power.6. Accessory components and features.7. Identification.


A. Seismic Performance: Switchboards shall withstand the effects of earthquake motionsdetermined according to SEI/ASCE 7.

1. The term "withstand" means "the unit will remain in place without separation of any partsfrom the device when subjected to the seismic forces specified and the unit will be fullyoperational after the seismic event."


A. Product Data: For each type of product indicated.

B. Shop Drawings: For each switchboard and related equipment.

1. Include dimensioned plans, elevations, sections, and details, including requiredclearances and service space around equipment per NEC 110.26. Show tabulations ofinstalled devices, equipment features, and ratings.

2. Include time-current coordination curves for each type and rating of overcurrentprotective device included in switchboards.

3. Include schematic and wiring diagrams for power, signal, and control wiring.




A. Operation and maintenance data.


B. Circuit breaker settings documentation.



B. Comply with NEMA PB 2.

C. Comply with NFPA 70.

D. Comply with UL 891.

1.7 WARRANTY

A. Special Warranty: Manufacturer's standard form in which manufacturer agrees to repair orreplace transient voltage suppression devices that fail in materials or workmanship withinspecified warranty period.

1. Warranty Period: Five years from date of Substantial Completion.

PART 2 - PRODUCTS

2.1 MANUFACTURED UNITS


1. Eaton Electrical Inc.; Cutler-Hammer Business Unit.2. General Electric Company; GE Consumer & Industrial - Electrical Distribution.3. Siemens Energy & Automation, Inc.4. Square D; a brand of Schneider Electric.

B. Front-Connected, Front-Accessible Switchboards:

1. Main Devices: Fixed, individually mounted.2. Branch Devices: Panel mounted.3. Sections front and rear aligned.

C. Nominal System Voltage: 208Y/120 V

D. Main-Bus Continuous: 1600A

E. Seismic Requirements: Fabricate and test switchboards according to IEEE 344 to withstandseismic forces defined in Section 260548.16 "Seismic Controls for Electrical Systems."

F. Enclosure: Steel, NEMA 250, Type 1.


1. Enclosure Finish: Factory-applied finish in manufacturer's standard gray finish over arust-inhibiting primer on treated metal surface.

G. Bus Transition and Incoming Pull Sections: Matched and aligned with basic switchboard.

H. Pull Box on Top of Switchboard:

1. Adequate ventilation to maintain temperature in pull box within same limits asswitchboard.

2. Removable covers shall form top, front, and sides. Top covers at rear shall be easilyremovable for drilling and cutting.

3. Bottom shall be insulating, fire-resistive material with separate holes for cable drops intoswitchboard.

4. Cable supports shall be arranged to facilitate cabling and adequate to support cablesindicated, including those for future installation.

I. Phase and Neutral Buses and Connections: Three phase, four wire unless otherwise indicated.Tin-plated or Silver-plated copper, high-strength, electrical-grade aluminum alloy with tin-plated aluminum circuit-breaker line connections.

1. Ground Bus: 1/4-by-2-inch minimum size, hard-drawn copper of 98 percent conductivity,equipped with pressure connectors for feeder and branch-circuit ground conductors.

2. Main Phase Buses and Equipment Ground Buses: Uniform capacity for entire length ofswitchboard's main and distribution sections. Provide for future extensions from bothends.

3. Neutral Buses: 100 percent of the ampacity of phase buses unless otherwise indicated,equipped with pressure connectors for outgoing circuit neutral cables.

J. Future Devices: Equip compartments with mounting brackets, supports, bus connections, andappurtenances at full rating of circuit-breaker compartment.

2.2 TRANSIENT VOLTAGE SUPPRESSION DEVICES

A. Surge Protection Device Description: IEEE C62.41-compliant, integrally mounted, solid-state,parallel-connected, with sine-wave tracking suppression and filtering modules, UL 1449,second edition, short-circuit current rating matching or exceeding the switchboard short-circuitrating, and with the following features and accessories:

1. Fuses, rated at 200-kA interrupting capacity.2. LED indicator lights for power and protection status.3. Audible alarm, with silencing switch, to indicate when protection has failed.4. Form-C contacts rated at 5 A and 250-V ac, one normally open and one normally closed,

for remote monitoring of system operation. Contacts shall reverse position on failure ofany surge diversion module or on opening of any current-limiting device.

5. Transient-event counter set to totalize transient surges.

B. Peak Single-Impulse Surge Current Rating: 120 kA per mode/240 kA per phase

C. Withstand Capabilities: 5000 IEEE C62.41, Category C3 (10 kA), 8-by-20-mic.sec. surges withless than 5 percent change in clamping voltage.


D. Protection modes and UL 1449 SVR for grounded wye circuits with 208Y/120V, three-phase,four-wire circuits shall be as follows:

1. Line to Neutral: 400 V for 208Y/1202. Line to Ground: 400 V for 208Y/1203. Neutral to Ground: 400 V for 208Y/120

2.3 DISCONNECTING AND OVERCURRENT PROTECTIVE DEVICES

A. Molded-Case Circuit Breaker (MCCB): Comply with UL 489, with interrupting capacity tomeet available fault currents.

1. Circuit breakers 600 ampere and larger shall be solid state trip type.2. Thermal-Magnetic Circuit Breakers: Inverse time-current element for low-level

overloads, and instantaneous magnetic trip element for short circuits. Adjustablemagnetic trip setting for circuit-breaker frame sizes 250 A and larger.

3. Adjustable Instantaneous-Trip Circuit Breakers: Magnetic trip element with front-mounted, field-adjustable trip setting.

4. Electronic trip circuit breakers with rms sensing; field-replaceable rating plug or field-replicable electronic trip; and the following field-adjustable settings:

a. Instantaneous trip.b. Long- and short-time pickup levels.c. Long- and short-time time adjustments.d. Ground-fault pickup level, time delay, and I2t response.

5. Molded-Case Circuit-Breaker (MCCB) Features and Accessories:

a. Standard frame sizes, trip ratings, and number of poles.b. Lugs: Mechanical style, suitable for number, size, trip ratings, and conductor

material.c. Application Listing: Appropriate for application; Type SWD for switching

fluorescent lighting loads; Type HID for feeding fluorescent and high-intensitydischarge (HID) lighting circuits.

d. Ground-Fault Protection: Integrally mounted relay and trip unit with adjustablepickup and time-delay settings, push-to-test feature, and ground-fault indicator.

e. Zone-Selective Interlocking: Integral with electronic trip unit; for interlockingground-fault protection function.

f. Shunt Trip: 120-V trip coil energized from separate circuit, set to trip at 75 percentof rated voltage.

g. Undervoltage Trip: Set to operate at 35 to 75 percent of rated voltage withoutintentional time delay.

h. Auxiliary Contacts: Two SPDT switches with "a" and "b" contacts; "a" contactsmimic circuit-breaker contacts, "b" contacts operate in reverse of circuit-breakercontacts.

B. Insulated-Case Circuit Breaker (ICCB): 100 percent rated, sealed, insulated-case power circuitbreaker with interrupting capacity rating to meet available fault current.

1. Fixed circuit-breaker mounting.


2. Two-step, stored-energy closing.3. Full-function, microprocessor-based trip units with interchangeable rating plug, trip

indicators, and the following field-adjustable settings:

a. Instantaneous trip.b. Long- and short-time time adjustments.

4. Zone-Selective Interlocking: Integral with electronic trip unit; for interlocking ground-fault protection function.

5. Remote trip indication and control.

2.4 INSTRUMENTATION

A. Instrument Transformers: IEEE C57.13, NEMA EI 21.1, and the following:

1. Current Transformers: IEEE C57.13; 5 A, 60 Hz, secondary and secondary shortingdevice. Burden and accuracy shall be consistent with connected metering and relaydevices.

2. Control-Power Transformers: Dry type, mounted in separate compartments for unitslarger than 3 kVA.

3. Current Transformers for Neutral and Ground-Fault Current Sensing: Connect secondarywiring to ground overcurrent relays, via shorting terminals, to provide selective trippingof main and tie circuit breaker. Coordinate with feeder circuit-breaker, ground-faultprotection.

B. Multifunction Digital-Metering Monitor: Microprocessor-based unit suitable for three- or four-wire systems and with the following features:

1. Switch-selectable digital display of the following values with maximum accuracytolerances as indicated:

a. Phase Currents, Each Phase: Plus or minus 1 percent.b. Phase-to-Phase Voltages, Three Phase: Plus or minus 1 percent.c. Phase-to-Neutral Voltages, Three Phase: Plus or minus 1 percent.d. Megawatts: Plus or minus 2 percent.e. Megavars: Plus or minus 2 percent.f. Power Factor: Plus or minus 2 percent.g. Frequency: Plus or minus 0.5 percent.h. Accumulated Energy, Megawatt Hours: Plus or minus 2 percent; accumulated

values unaffected by power outages up to 72 hours.i. Megawatt Demand: Plus or minus 2 percent; demand interval programmable from

five to 60 minutes.

2. Mounting: Display and control unit flush or semiflush mounted in instrumentcompartment door.


2.5 CONTROL POWER

A. Control Circuits: 120-V ac, supplied through secondary disconnecting devices from control-power transformer.

B. Electrically Interlocked Main and Tie Circuit Breakers: Two control-power transformers inseparate compartments, with interlocking relays, connected to the primary side of each control-power transformer at the line side of the associated main circuit breaker. 120-V secondariesconnected through automatic transfer relays to ensure a fail-safe automatic transfer scheme.

C. Control-Power Fuses: Primary and secondary fuses for current-limiting and overload protectionof transformer and fuses for protection of control circuits.

D. Control Wiring: Factory installed, with bundling, lacing, and protection included. Provideflexible conductors for No. 8 AWG and smaller, for conductors across hinges, and forconductors for interconnections between shipping units.

2.6 ACCESSORY COMPONENTS AND FEATURES

A. Portable Test Set: For testing functions of solid-state trip devices without removing fromswitchboard. Include relay and meter test plugs suitable for testing switchboard meters andswitchboard class relays.

B. Spare-Fuse Cabinet: Suitably identified, wall-mounted, lockable, compartmented steel box orcabinet. Arrange for wall mounting.

2.7 IDENTIFICATION

A. Service Equipment Label: NRTL labeled for use as service equipment for switchboards withone or more service disconnecting and overcurrent protective devices. Switchboards identifiedfor use as service equipment shall be so labeled.

B. Switchboards shall be provided with adhesive tape on front of enclosure to depict actual busarrangement inside cubicles.

C. Each switchboard compartment shall be provided with adequate nameplate on front of cubicle.Refer to specification 260553 Electrical Identification for nameplate requirements.

PART 3 - EXECUTION

3.1 INSTALLATION

A. Receive, inspect, handle, store and install switchboards and accessories according toNECA 400.

B. Equipment Mounting: Switchboards shall be mounted on a nominal four (4) inch concretehousekeeping pad properly anchored in accordance with manufacturer’s recommendations. If


manufacturer has no recommendations for mounting to a concrete base then the contractor shallinstall the equipment as listed below:

1. Install dowel rods to connect concrete base to concrete floor. Unless otherwise indicated,install dowel rods on 18-inch centers around the full perimeter of concrete base.

2. For supported equipment, install epoxy-coated anchor bolts that extend through concretebase and anchor into structural concrete floor.

3. Place and secure anchorage devices. Use setting drawings, templates, diagrams,instructions, and directions furnished with items to be embedded.

4. Install anchor bolts to elevations required for proper attachment to switchboards.

C. Temporary Lifting Provisions: Remove temporary lifting eyes, channels, and brackets andtemporary blocking of moving parts from switchboard units and components.

D. Install filler plates in unused spaces of panel-mounted sections.

E. Install overcurrent protective devices, transient voltage suppression devices, andinstrumentation.

1. Set field-adjustable switches and circuit-breaker trip ranges.

F. Install spare-fuse cabinet.

G. Comply with NECA 1.

3.2 IDENTIFICATION

A. Identify field-installed conductors, interconnecting wiring, and components; provide warningsigns complying with requirements for identification specified in Section 260553 "Identificationfor Electrical Systems."

B. Switchboard Nameplates: Label each switchboard compartment with a nameplate complyingwith requirements for identification specified in Section 260553 "Identification for ElectricalSystems."

C. Device Nameplates: Label each disconnecting and overcurrent protective device and each meterand control device mounted in compartment doors with a nameplate complying withrequirements for identification specified in Section 260553 "Identification for ElectricalSystems."

D. Upon completion of installation, and prior to final inspection, the contractor shall reduce in sizethe “as-built” single-line diagram (riser), frame same under glass, and mount in a conspicuousplace adjacent to the switchboard.

E. The flash protection boundary and the incident energy for the electrical equipment shall bedetermined in accordance with IEEE 1584 and NFPA 70E requirements. Equipment shall befield marked to warn qualified persons of the potential electric flash hazard per NEC 110.16requirements.



A. Acceptance Testing Preparation:

1. Test insulation resistance for each switchboard bus, component, connecting supply,feeder, and control circuit.

2. Test continuity of each circuit.

B. Tests and Inspections:


2. Correct malfunctioning units on-site, where possible, and retest to demonstratecompliance; otherwise, replace with new units and retest.

3. Test and adjust controls, remote monitoring, and safeties. Replace damaged andmalfunctioning controls and equipment.

C. For services 1000 amperes and larger, the following test shall be performed on the servicecircuit breakers and the distribution circuit breakers. Testing shall be performed by a qualifiedfactory technician at the job site. All readings shall be tabulated:

1. Phase tripping tolerance (within 20% of U.L. requirements).2. Trip time (per phase) in seconds.3. Instantaneous trip (amps) per phase.4. Insulation resistance (in megohms) at 100 volts (phase to phase, and line to load).

D. The ground fault protection on the new circuit breakers (if provided) shall be performancetested in the field and properly calibrated and set in accordance with the coordination study.

E. Switchboard will be considered defective if it does not pass tests and inspections.

F. Prepare test and inspection reports, including a certified report that identifies switchboardsincluded and that describes scanning results. Include notation of deficiencies detected, remedialaction taken, and observations after remedial action.


1847 PANELBOARDS 262416 - 1

SECTION 262416 - PANELBOARDS

PART 1 - GENERAL

1.1 SUMMARY

A. Section includes distribution panelboards and lighting and appliance branch-circuit panelboards.



B. Shop Drawings: For each panelboard and related equipment.

1. Include dimensioned plans, elevations, sections, and details. Show tabulations of installeddevices, equipment features, and ratings.

2. Detail enclosure types and details for types other than NEMA 250, Type 1.3. Detail bus configuration, current, and voltage ratings.4. Short-circuit current rating of panelboards and overcurrent protective devices.5. Include evidence of NRTL listing for series rating of installed devices.6. Detail features, characteristics, ratings, and factory settings of individual overcurrent

protective devices and auxiliary components.7. Include wiring diagrams for power, signal, and control wiring.8. Include time-current coordination curves for each type and rating of overcurrent

protective device included in panelboards.


A. Seismic Qualification Certificates: Submit certification that panelboards, overcurrent protectivedevices, accessories, and components will withstand seismic forces for the region in which theequipment is installed."

B. Field quality-control reports.

C. Panelboard schedules for installation in panelboards.






B. Comply with NEMA PB 1.


1.6 WARRANTY

A. Special Warranty: Manufacturer's standard form in which manufacturer agrees to repair orreplace transient voltage suppression devices that fail in materials or workmanship withinspecified warranty period.

1. Warranty Period: One (1) year from date of Substantial Completion.

PART 2 - PRODUCTS

2.1 GENERAL REQUIREMENTS FOR PANELBOARDS

A. Enclosures: Flush and/or surface mounted cabinets as indicated on the plans.

1. Rated for environmental conditions at installed location.

a. Indoor Dry and Clean Locations: NEMA 250, Type 1b. Outdoor Locations: NEMA 250, Type 3Rc. Kitchen / Wash-Down Areas: NEMA 250, Type 4Xd. Other Wet or Damp Indoor Locations: NEMA 250, Type 4

2. Front: Secured to box with concealed trim clamps. For surface-mounted fronts, matchbox dimensions; for flush-mounted fronts, overlap box.

3. Hinged Front Cover: Entire front trim hinged to box and with standard door withinhinged trim cover.

4. Directory Card: A (manufacturer provided) typed directory card shall be provided insidepanelboard door, mounted in transparent card holder.

B. Phase, Neutral, and Ground Buses: Copper

C. Full size copper neutral bus shall be provided for all panels.

D. Copper ground bus shall be provided for all panels.

E. Conductor Connectors: Suitable for use with conductor material and sizes.

1. Material: copper2. Main and Neutral Lugs: Compression type.3. Ground Lugs and Bus Configured Terminators: Compression type.4. Feed-Through Lugs: Compression type, suitable for use with conductor material. Locate

at opposite end of bus from incoming lugs or main device.5. Subfeed (Double) Lugs: Compression type suitable for use with conductor material.

Locate at same end of bus as incoming lugs or main device.


F. Service Equipment Label: NRTL labeled for use as service equipment for panelboards with oneor more main service disconnecting and overcurrent protective devices.

G. Future Devices: Mounting brackets, bus connections, filler plates, and necessary appurtenancesrequired for future installation of devices.

H. Panelboard Short-Circuit Current Rating: Fully rated to interrupt symmetrical short-circuitcurrent available at terminals.

I. “Load Centers” are not acceptable.

J. The use of series rated breakers is not acceptable.

K. Panelboards feeding electronic equipment shall be provided with a “full size” ground bus, a“full size” neutral bus, or 200% neutral bus and shall be fed with feeders having a “full size” orlarger neutral. Branch circuits shall have individual neutrals, in other words, no sharing of theneutral between circuits is allowed.

L. Maximum number of breakers in a panelboard shall not exceed 42 poles.


A. Seismic Performance: Panelboards shall withstand the effects of earthquake motions determinedaccording to SEI/ASCE 7.

1. The term "withstand" means "the unit will remain in place without separation of any partsfrom the device when subjected to the seismic forces specified and the unit will be fullyoperational after the seismic event.”

2.3 DISTRIBUTION PANELBOARDS



B. Panelboards: NEMA PB 1, power and feeder distribution type.

C. Doors: Secured with vault-type latch with tumbler lock; keyed alike.

D. Mains: As indicated on contract drawings.

E. Panels 600Amp and less shall be provided with bolt-on breakers.

F. Branch Overcurrent Protective Devices: For Circuit-Breaker Frame Sizes 125 A and Smaller:Bolt-on circuit breakers.


G. Branch Overcurrent Protective Devices: For Circuit-Breaker Frame Sizes Larger Than 125 A:Bolt-on circuit breakers; plug-in circuit breakers where individual positive-locking devicerequires mechanical release for removal.

H. Branch Overcurrent Protective Devices: Fused switches.

2.4 LIGHTING AND APPLIANCE BRANCH-CIRCUIT PANELBOARDS



B. Panelboards: NEMA PB 1, lighting and appliance branch-circuit type.

C. Mains: As indicated on contract drawings.

D. Branch Overcurrent Protective Devices: Bolt-on circuit breakers, replaceable without disturbingadjacent units.

E. Panels 600Amp and less shall be provided with bolt-on breakers.

F. Doors: Concealed hinges; secured with flush latch with tumbler lock; keyed alike.

2.5 DISCONNECTING AND OVERCURRENT PROTECTIVE DEVICES



B. Molded-Case Circuit Breaker (MCCB): Comply with UL 489, with interrupting capacity tomeet available fault currents.

1. Thermal-Magnetic Circuit Breakers: Inverse time-current element for low-leveloverloads, and instantaneous magnetic trip element for short circuits. Adjustablemagnetic trip setting for circuit-breaker frame sizes 250 A and larger.

2. Adjustable Instantaneous-Trip Circuit Breakers: Magnetic trip element with front-mounted, field-adjustable trip setting.

3. Electronic trip circuit breakers with rms sensing; field-replaceable rating plug or field-replicable electronic trip; and the following field-adjustable settings:

a. Instantaneous trip.


b. Long- and short-time pickup levels.c. Long- and short-time time adjustments.d. Ground-fault pickup level, time delay, and I squared x t response.

4. GFCI Circuit Breakers: Single- and two-pole configurations with Class A ground-faultprotection (6-mA trip).

5. Ground-Fault Equipment Protection (GFEP) Circuit Breakers: Class B ground-faultprotection (30-mA trip).

6. Molded-Case Circuit-Breaker (MCCB) Features and Accessories:

a. Standard frame sizes, trip ratings, and number of poles.b. Lugs: Compression style, suitable for number, size, trip ratings, and conductor

materials.c. Application Listing: Appropriate for application; Type SWD for switching

fluorescent lighting loads; Type HID for feeding fluorescent and high-intensitydischarge (HID) lighting circuits. Type HACR for feeding mechanical equipmentloads.

d. Ground-Fault Protection: Integrally mounted relay and trip unit with adjustablepickup and time-delay settings, push-to-test feature, and ground-fault indicator.

e. Shunt Trip: 120V trip coil energized from separate circuit, set to trip at 75 percentof rated voltage.

f. Handle Padlocking Device: Fixed attachment, for locking circuit-breaker handle inon or off position.

g. Handle Clamp: Loose attachment, for holding circuit-breaker handle in onposition.

C. Fused Switch: NEMA KS 1, Type HD; clips to accommodate specified fuses; lockable handle.Refer to specification section 262816 “Enclosed Switches and Circuit Breakers” for additionalrequirements.

1. Fuses, and Spare-Fuse Cabinet: Comply with requirements specified in Section 262813"Fuses."

PART 3 - EXECUTION

3.1 INSTALLATION

A. Receive, inspect, handle, store and install panelboards and accessories according toNEMA PB 1.1.

B. Comply with mounting and anchoring requirements specified in Section 260548.16 "SeismicControls for Electrical Systems."

C. Mount top of trim 90 inches above finished floor unless otherwise indicated.

D. Mount panelboard cabinet plumb and rigid without distortion of box. Mount recessedpanelboards with fronts uniformly flush with wall finish and mating with back box.

E. Install overcurrent protective devices and controllers not already factory installed.


1. Set field-adjustable, circuit-breaker trip ranges.

F. Install filler plates in unused spaces.

G. Stub a minimum of ten 1-inch empty conduits from panelboard into accessible ceiling space orspace designated to be ceiling space in the future.

H. Arrange conductors in gutters into groups and bundle and wrap with wire ties.

I. Comply with NECA 1.

3.2 IDENTIFICATION

A. Identify field-installed conductors, interconnecting wiring, and components; provide warningsigns complying with Section 260553 "Identification for Electrical Systems."

1. The number of the branch circuit shall be identified with permanent wire tag attached tothe wire.

B. Create a directory (utilizing the manufacturer’s provided directory card) to indicate installedcircuit loads and incorporating Owner's final room designations. Obtain approval beforeinstalling. Use a computer or typewriter to create directory; handwritten directories are notacceptable.

C. Panelboard Nameplates: Label each panelboard with a nameplate complying with requirementsfor identification specified in Section 260553 "Identification for Electrical Systems."Panelboards identified for use as service equipment shall be so labeled.

D. Device Nameplates: Label each branch circuit device in distribution panelboards with anameplate complying with requirements for identification specified in Section 260553"Identification for Electrical Systems."

E. Equipment labeling for the flash protection boundary and the incident energy shall bedetermined in accordance with IEEE 1584, NFPA 70E & NEC 110-16 requirements.


A. Perform tests and inspections.

B. Acceptance Testing Preparation:

1. Test insulation resistance for each panelboard bus, component, connecting supply, feeder,and control circuit.


C. Tests and Inspections:




D. For services 1000 amperes and larger, the following test shall be performed on the servicecircuit breakers and the distribution circuit breakers. Testing shall be performed by a qualifiedfactory technician at the job site. All readings shall be tabulated:


E. The ground fault protection on the new circuit breakers (if provided) shall be performancetested in the field and properly calibrated and set in accordance with the coordination study.

F. Panelboards will be considered defective if they do not pass tests and inspections.

G. Prepare test and inspection reports, including a certified report that identifies panelboardsincluded and that describes scanning results. Include notation of deficiencies detected, remedialaction taken, and observations after remedial action. Provide test and inspection reports toengineer of record for review prior to final acceptance of project.


1847 WIRING DEVICES 262726 - 1

SECTION 262726 - WIRING DEVICES

PART 1 - GENERAL

1.1 SUMMARY


1. Receptacles, receptacles with integral GFCI, and associated device plates.2. Weather-resistant receptacles.3. Snap switches.


1. Section 260923 "Lighting Control Devices” for wall-switch occupancy sensors.



B. Shop Drawings: List of legends and description of materials and process used for pre-markingwall plates.





PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. Manufacturers' Names: Provide products as indicated on drawings or comparable product fromthe following manufacturers:

1. Cooper Wiring Devices; Division of Cooper Industries, Inc. (Cooper).2. Hubbell Incorporated; Wiring Device-Kellems (Hubbell).3. Leviton Mfg. Company Inc. (Leviton).4. Pass & Seymour/Legrand (Pass & Seymour).


B. Source Limitations: Obtain each type of wiring device and associated wall plate from singlesource from single manufacturer.

2.2 GENERAL WIRING-DEVICE REQUIREMENTS

A. Wiring Devices, Components, and Accessories: Listed and labeled as defined in NFPA 70, by aqualified testing agency, and marked for intended location and application.


2.3 STRAIGHT-BLADE RECEPTACLES

A. Convenience Receptacles, 125 V, 20 A: Comply with NEMA WD 1, NEMA WD 6Configuration 5-20R, UL 498, and FS W-C-596.

B. Duplex receptacles shall be of the grounding type, arranged for back and side wiring, withseparate single or double grounding terminals. Receptacles shall be straight blade, rated 20A,125 volt and face configuration shall conform to the NEMA Standard No. WE-1, NEMA WD-16, DSCC W-C596G and UL-498, and shall be “approved” third-party listed. Self-grounding orautomatic type grounding receptacles are not acceptable in lieu of receptacles with separategrounding screw lugs and a direct, green insulated conductor connection to the equipmentgrounding system.

C. Receptacles shall be industrial specification heavy duty grade, mounted vertically. Receptaclesmounted over counters, back-splashes, etc., shall be mounted horizontally.

1. Products: Subject to compliance with requirements, provide one of the following:

a. Cooper; 5351 (single), 5352 (duplex).b. Hubbell; 5351 (single), 5352 (duplex).c. Leviton; 5351 (single), 5352 (duplex).d. Pass & Seymour; 5361 (single), 5362 (duplex).

2.4 GFCI RECEPTACLES

A. General Description:

1. Straight blade, feed through type.2. Comply with NEMA WD 1, NEMA WD 6, UL 498, UL 943 Class A, and FS W-C-596.3. Include self-test feature (automatically tests on regular intervals to ensure device is

operating properly) and indicator light that shows when the GFCI has malfunctioned andno longer provides proper GFCI protection.

4. GFCI receptacles shall be rated minimum 20A (NEMA 5-20R configuration).

B. Duplex GFCI Convenience Receptacles, 125 V, 20 A:


a. Cooper; SGF20.


b. Hubbell; GFRST20.c. Pass & Seymour; 2096.d. Leviton; S7899.

2.5 TOGGLE SWITCHES

A. Comply with NEMA WD 1, UL 20, and FS W-S-896.

B. Toggle switches shall be single pole, three-way, or four-way as indicated on the drawings.Switches shall be of the grounding type, with hex-head grounding screw, rated 20A, 120/277volt, A.C. only. All switches shall have quiet operating mechanisms without the use of mercuryswitches. All switches shall be listed by an “approved” third-party agency, approved for thevoltage and amperage indicated.

C. Switches, 120/277 V, 20 A:


Single Pole:

1) Cooper; AH1221.2) Hubbell; HBL1221.3) Leviton; 1221-2.4) Pass & Seymour; CSB20AC1.

Two Pole:


Three-Way:


Four-Way:



2.6 WALL PLATES

A. Single and combination types shall match corresponding wiring devices.

1. Plate-Securing Screws: Metal slotted head oval screws to match the finish and materialof the plate and shall be furnished with the plate by the plate manufacturer. Quantity of2% spare cover plates of each type shall be provided to the owner.

2. Material for Finished Spaces: For flush mounted wiring devices and telephone outletsprovide “302” stainless steel, standard size, single or ganged as shown on the drawings.See where applicable below

3. Material for Unfinished Spaces: Galvanized cast ferrous metal, standard size and shall besingle or ganged as indicated on the drawings.

4. Material for Wet or Damp Locations: Die-cast aluminum with spring-loaded lift cover,NEMA 250, complying with Type 3R, weather resistant with lockable cover and shall be“approved” third party listed as “rain-tight while in use”.

B. Identification

1. Label each receptacle, toggle switch and wall mounted occupancy sensor switchindicating the panel and circuit number.

2. Labels to be machine printed and not handwritten.3. All labels shall be Self-Adhesive Vinyl Labels: Preprinted, flexible label laminated with

a clear, weather- and chemical-resistant coating and matching wraparound adhesive tapefor securing ends of legend label.

2.7 FINISHES

A. Device Color:

1. As selected by owner unless otherwise indicated.

B. Wall Plate Color: “302” stainless steel for finished spaces. Refer to section 2.6 above foradditional information.

PART 3 - EXECUTION

3.1 INSTALLATION

A. Comply with NECA 1, including mounting heights listed in that standard, unless otherwiseindicated.

B. Coordination with Other Trades:

1. Protect installed devices and their boxes. Do not place wall finish materials over deviceboxes and do not cut holes for boxes with routers that are guided by riding against outsideof boxes.


2. Keep outlet boxes free of plaster, drywall joint compound, mortar, cement, concrete, dust,paint, and other material that may contaminate the raceway system, conductors, andcables.

3. Install device boxes in brick or block walls so that the cover plate does not cross a jointunless the joint is troweled flush with the face of the wall.

4. Install wiring devices after all wall preparation, including painting, is complete.

C. Conductors:

1. Do not strip insulation from conductors until right before they are spliced or terminatedon devices.

2. Strip insulation evenly around the conductor using tools designed for the purpose. Avoidscoring or nicking of solid wire or cutting strands from stranded wire.

3. The length of free conductors at outlets for devices shall meet provisions of NFPA 70,Article 300, without pigtails.

4. Existing Conductors:

a. Cut back and pigtail, or replace all damaged conductors.b. Straighten conductors that remain and remove corrosion and foreign matter.c. Pigtailing existing conductors is permitted, provided the outlet box is large enough.

D. Device Installation:

1. Replace devices that have been in temporary use during construction and that wereinstalled before building finishing operations were complete.

2. Keep each wiring device in its package or otherwise protected until it is time to connectconductors.

3. Do not remove surface protection, such as plastic film and smudge covers, until the lastpossible moment.

4. Connect devices to branch circuits using pigtails that are not less than 6 inches in length.5. When there is a choice, use side wiring with binding-head screw terminals. Wrap solid

conductor tightly clockwise, two-thirds to three-fourths of the way around terminalscrew.

6. Use a torque screwdriver when a torque is recommended or required by manufacturer.7. When conductors larger than No. 12 AWG are installed on 15- or 20-A circuits, splice

No. 12 AWG pigtails for device connections.8. Tighten unused terminal screws on the device.9. When mounting into metal boxes, remove the fiber or plastic washers used to hold

device-mounting screws in yokes, allowing metal-to-metal contact.

E. The exit sign and egress lighting shall not be switched and shall remain on at all times.

F. Receptacle Orientation:

1. Install ground pin of vertically mounted receptacles up, and on horizontally mountedreceptacles to the right.

G. Device Plates: Do not use oversized or extra-deep plates. Repair wall finishes and remountoutlet boxes when standard device plates do not fit flush or do not cover rough wall opening.


H. Arrangement of Devices: Unless otherwise indicated, mount flush, with long dimensionvertical and with grounding terminal of receptacles on top. Group adjacent switches undersingle, multi-gang wall plates.

I. Receptacles shall not be mounted back to back.

3.2 GFCI RECEPTACLES

A. Install non-feed-through-type GFCI receptacles where protection of downstream receptacles isnot required.

B. All receptacles, where located to serve countertops, shall be GFCI type receptacles. Thisincludes countertops that do not have a sink installed within it.

C. All receptacles, where located within six feet of a sink, shall be GFCI type receptacles.



1. Test Instruments: Use instruments that comply with UL 1436.2. Test Instrument for Convenience Receptacles: Digital wiring analyzer with digital

readout or illuminated digital-display indicators of measurement.

B. Tests for Convenience Receptacles:

1. Line Voltage: Acceptable range is 105 to 132 V.2. Percent Voltage Drop under 15-A Load: A value of 6 percent or higher is unacceptable.3. Ground Impedance: Values of up to 2 ohms are acceptable.4. GFCI Trip: Test for tripping values specified in UL 1436 and UL 943.5. Using the test plug, verify that the device and its outlet box are securely mounted.6. Tests shall be diagnostic, indicating damaged conductors, high resistance at the circuit

breaker, poor connections, inadequate fault current path, defective devices, or similarproblems. Correct circuit conditions, remove malfunctioning units and replace with newones, and retest as specified above.

C. Wiring device will be considered defective if it does not pass tests and inspections.

D. Prepare test and inspection reports.


1847 FUSES 262813 - 1

SECTION 262813 - FUSES

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes: Cartridge fuses rated 600-V ac and less.







B. Comply with NEMA FU 1 for cartridge fuses.


PART 2 - PRODUCTS

2.1 MANUFACTURERS


1. Cooper Bussmann, Inc.2. Edison Fuse, Inc.3. Ferraz Shawmut, Inc.4. Littelfuse, Inc.

2.2 CARTRIDGE FUSES

A. Characteristics: NEMA FU 1, nonrenewable cartridge fuses with voltage ratings consistent withcircuit voltages.

1847 FUSES 262813 - 2

PART 3 - EXECUTION

3.1 FUSE APPLICATIONS

A. Service Entrance & Feeder Circuits over 600A: Class L, U.L. Listed, current limiting with 200KAmp interrupting rating.

B. Service Entrance & Feeder Circuits 600A and less: Class RK1 or J, U.L. Listed, current limitingwith 200K Amp interrupting rating.

C. Motor, Motor Controller and Transformer Circuits: Class RK5, U.L. Listed, current limitingtime delay, with 200K Amp interrupting rating.

D. Individual Equipment where fault current does not exceed 50KA: Class K5, U.L. Listed, with50KA interrupting rating.

E. Feeders: Class L, time delay

F. Motor Branch Circuits: Class RK5, time delay.

G. Other Branch Circuits: Class J, fast acting.

H. Control Circuits: Class CC, fast acting.

3.2 INSTALLATION

A. Install fuses in fusible devices. Arrange fuses so rating information is readable withoutremoving fuse.

B. Provide (1) set of spare fuses for each device or 10% of project quantity (whichever is greater)for the clients use. Turn over all spare equipment prior to final project acceptance.

3.3 IDENTIFICATION

A. Install labels complying with requirements for identification specified in Section 260553"Identification for Electrical Systems" and indicating fuse replacement information on insidedoor of each fused switch and adjacent to each fuse block and holder.


1847 ENCLOSED SWITCHES AND CIRCUIT BREAKERS 262816 - 1

SECTION 262816 - ENCLOSED SWITCHES AND CIRCUIT BREAKERS

PART 1 - GENERAL

1.1 SUMMARY


1. Fusible switches.2. Non-fusible switches.3. Molded-case circuit breakers (MCCBs).4. Enclosures.

1.2 DEFINITIONS

A. NC: Normally closed.

B. NO: Normally open.

C. SPDT: Single pole, double throw.


A. Seismic Performance: Enclosed switches and circuit breakers shall withstand the effects ofearthquake motions determined according to ASCE/SEI 7.

1. The term "withstand" means "the unit will remain in place without separation of any partsfrom the device when subjected to the seismic forces specified and the unit will be fullyoperational after the seismic event."


A. Product Data: For each type of enclosed switch, circuit breaker, accessory, and componentindicated.

B. Shop Drawings: For enclosed switches and circuit breakers. Include plans, elevations, sections,details, and attachments to other work.

1. Wiring Diagrams: For power, signal, and control wiring.


A. Seismic Qualification Certificates: For enclosed switches and circuit breakers, accessories, andcomponents, from manufacturer.

Switches shall have handles whose positions are easily recognizable in the “on” or “off’ position. For safety reasons, padlock shall be provided for switches located in the public areas.


B. Field quality-control reports.






PART 2 - PRODUCTS

2.1 GENERAL REQUIREMENTS FOR FUSIBLE AND NON-FUSIBLE SWITCHES

A. Fusible and Non-Fusible switches shall be the “heavy duty” type. General duty switches arenot acceptable.

B. Switches shall be third-party listed.

C. Switches shall have defeatable door interlocks that prevent the door from opening when theoperating handle is in the “on” position.

D. Switches shall have handles whose positions are easily recognizable in the “on” or “off”position. For safety reasons, padlock shall be provided for switches located in the public areas.

E. Switches shall have non-teasible, positive, quick make-quick break mechanisms.

F. Switches shall be properly labeled. See specification 260553 Identification for ElectricalSystems.

2.2 FUSIBLE SWITCHES


1. Eaton Electrical Inc.; Cutler-Hammer Business Unit.2. General Electric Company; GE Consumer & Industrial - Electrical Distribution.3. Siemens Energy & Automation, Inc.

B. Fusible switches with short-circuit withstand ratings of 100K Amp or 200K Amp require ClassR or Class J rejection fuse block feature.


C. Type HD, Heavy Duty, Single Throw, 240-V ac, 1200 A and Smaller: UL 98 and NEMA KS 1,horsepower rated, with clips or bolt pads to accommodate specified fuses, lockable handle withcapability to accept three padlocks, and interlocked with cover in closed position.

D. Accessories:

1. Equipment Ground Kit: Internally mounted and labeled for copper and aluminum groundconductors.

2. Neutral Kit: Internally mounted; insulated, capable of being grounded and bonded;labeled for copper and aluminum neutral conductors.

3. Class R Fuse Kit: Provides rejection of other fuse types when Class R fuses are specified.4. Lugs: Suitable for number, size, and conductor material.5. Service-Rated Switches: Labeled for use as service equipment.

2.3 NONFUSIBLE SWITCHES



B. Type HD, Heavy Duty, Single Throw, 240-V ac, 1200 A and Smaller: UL 98 and NEMA KS 1,horsepower rated, lockable handle with capability to accept three padlocks, and interlocked withcover in closed position.

C. Accessories:

1. Equipment Ground Kit: Internally mounted and labeled for copper and aluminum groundconductors.

2. Neutral Kit: Internally mounted; insulated, capable of being grounded and bonded;labeled for copper and aluminum neutral conductors.

3. Lugs: Suitable for number, size, and conductor material.

2.4 MOLDED-CASE CIRCUIT BREAKERS



B. General Requirements: Comply with UL 489, NEMA AB 1, and NEMA AB 3, withinterrupting capacity to comply with available fault currents.


C. Thermal-Magnetic Circuit Breakers: Inverse time-current element for low-level overloads andinstantaneous magnetic trip element for short circuits. Adjustable magnetic trip setting forcircuit-breaker frame sizes 250 A and larger.

D. Features and Accessories:

1. Standard frame sizes, trip ratings, and number of poles.2. Lugs: Suitable for number, size, trip ratings, and conductor material.3. Application Listing: Appropriate for application; Type SWD for switching fluorescent

lighting loads; Type HID for feeding fluorescent and high-intensity discharge lightingcircuits.

4. Ground-Fault Protection: Comply with UL 1053; integrally mounted, self-powered typewith mechanical ground-fault indicator; relay with adjustable pickup and time-delaysettings, push-to-test feature, internal memory, and shunt trip unit; and three-phase, zero-sequence current transformer/sensor.

5. Shunt Trip: Trip coil energized from separate circuit, with coil-clearing contact.6. Auxiliary Contacts: Two SPDT switches with "a" and "b" contacts; "a" contacts mimic

circuit-breaker contacts, "b" contacts operate in reverse of circuit-breaker contacts.7. Alarm Switch: One NO or NC contact that operates only when circuit breaker has

tripped.

2.5 ENCLOSURES

A. Enclosed Switches and Circuit Breakers: NEMA AB 1, NEMA KS 1, NEMA 250, and UL 50,to comply with environmental conditions at installed location.

1. Indoor, Dry and Clean Locations: NEMA 250, Type 12. Outdoor Locations: NEMA 250, Type 4X stainless steel3. Kitchen and Wash-Down Areas: NEMA 250, Type 4X stainless steel4. Other Wet or Damp, Indoor Locations: NEMA 250, Type 4X stainless steel5. Indoor Locations Subject to Dust, Falling Dirt, and Dripping Noncorrosive Liquids:

NEMA 250, Type 12.

PART 3 - EXECUTION

3.1 INSTALLATION

A. Install individual wall-mounted switches and circuit breakers with tops at uniform height unlessotherwise indicated.

B. Temporary Lifting Provisions: Remove temporary lifting eyes, channels, and brackets andtemporary blocking of moving parts from enclosures and components.

C. Install fuses in fusible devices.

D. Comply with NECA 1.


3.2 IDENTIFICATION

A. Comply with requirements in Section 260553 "Identification for Electrical Systems."

1. Identify field-installed conductors, interconnecting wiring, and components; providewarning signs.

2. Label each enclosure with engraved metal or laminated-plastic nameplate.


A. Perform tests and inspections.

B. Acceptance Testing Preparation:

1. Test insulation resistance for each enclosed switch and circuit breaker, component,connecting supply, feeder, and control circuit.


C. Tests and Inspections:



D. For services 1000 amperes and larger, the following test shall be performed on the servicecircuit breakers and the distribution circuit breakers. Testing shall be performed by a qualifiedfactory technician at the job site. All readings shall be tabulated:


E. The ground fault protection on the new circuit breakers (if provided) shall be performancetested in the field and properly calibrated and set in accordance with the coordination study.

F. Enclosed switches and circuit breakers will be considered defective if they do not pass tests andinspections.

G. Prepare test and inspection reports, including a certified report that identifies enclosed switchesand circuit breakers and that describes scanning results. Include notation of deficienciesdetected, remedial action taken, and observations after remedial action.


1847 SURGE PROTECTION FOR LOW-VOLTAGEELECTRICAL POWER CIRCUITS

264313 - 1

SECTION 264313 - SURGE PROTECTION FOR LOW-VOLTAGE ELECTRICAL POWERCIRCUITS

PART 1 - GENERAL

1.1 SUMMARY

A. Section includes field-mounted SPDs for low-voltage (120 to 600 V) power distribution andcontrol equipment.



1. Include rated capacities, operating characteristics, electrical characteristics, and furnishedspecialties and accessories.

2. Copy of UL Category Code VZCA certification, as a minimum, listing the tested valuesfor VPRs, Inominal ratings, MCOVs, type designations, OCPD requirements, modelnumbers, system voltages, and modes of protection.



B. Sample Warranty: For manufacturer's special warranty.


A. Maintenance data.

1.5 WARRANTY

A. Manufacturer's Warranty: Manufacturer agrees to replace or replace SPDs that fail in materialsor workmanship within specified warranty period.

1. Warranty Period: Ten years from date of Substantial Completion.

PART 2 - PRODUCTS

2.1 GENERAL SPD REQUIREMENTS

A. SPD with Accessories: Listed and labeled as defined in NFPA 70, by a qualified testing agency,and marked for intended location and application.


264313 - 2


C. Comply with UL 1449.

D. Comply with ANSI/IEEE C62.34.

E. MCOV of the SPD shall be the nominal system voltage.

F. The system shall meet the following standards: IEEE C62.41 and IEEE C62.45, NEMA LS 1,UL 1449, NEC Article 285.

2.2 SERVICE ENTRANCE SUPPRESSOR

A. Manufacturers: Subject to compliance with requirements, provide product indicated ondrawings or comparable product by one of the following:

1. ABB France.2. Advanced Protection Technologies Inc. (APT).3. Eaton Corporation.4. Emerson Electric Co.5. GE Zenith Controls.6. LEA International; Protection Technology Group.7. Leviton Manufacturing Co., Inc.8. PowerLogics, Inc.9. Schneider Electric Industries SAS.10. Siemens Industry, Inc.

B. SPDs: Comply with UL 1449, Type as indicated in section 3.1(D) of this specification.

1. SPDs with the following features and accessories:

a. Integral disconnect switch.b. Internal thermal protection that disconnects the SPD before damaging internal

suppressor components.c. Indicator light display for protection status.

C. Peak Surge Current Rating: The minimum single-pulse surge current withstand rating per phaseshall not be less than 480 kA. The peak surge current rating shall be the arithmetic sum of theratings of the individual MOVs in a given mode.

D. Protection modes and UL 1449 VPR for grounded wye circuits with 208Y/120 V, three-phase,four-wire circuits shall not exceed the following:

1. Line to Neutral: 700 V for 208Y/120 V2. Line to Ground: 1200 V for 208Y/120 V3. Line to Line: 1000 V for 208Y/120 V

E. SCCR: Equal or exceed 200 kA

F. Inominal Rating: 20 kA.


264313 - 3

2.3 PANEL SUPPRESSORS

A. Manufacturers: Subject to compliance with requirements, provide product indicated ondrawings or comparable product by one of the following:

1. ABB France.2. Advanced Protection Technologies Inc. (APT).3. Eaton Corporation.4. Emerson Electric Co.5. GE Zenith Controls.6. LEA International; Protection Technology Group.7. Leviton Manufacturing Co., Inc.8. PowerLogics, Inc.9. Schneider Electric Industries SAS.10. Siemens Industry, Inc.

B. SPDs: Comply with UL 1449, Type as indicated in section 3.1(D) of this specification.

1. Include LED indicator lights for power and protection status.2. Internal thermal protection that disconnects the SPD before damaging internal suppressor

components.

C. Peak Surge Current Rating: The minimum single-pulse surge current withstand rating per phaseshall not be less than 200 kA. The peak surge current rating shall be the arithmetic sum of theratings of the individual MOVs in a given mode.

D. Protection modes and UL 1449 VPR for grounded wye circuits with 208Y/120 V, three-phase,four-wire circuits shall not exceed the following:

1. Line to Neutral: 700 V for 208Y/120 V2. Line to Ground:700 V for 208Y/120 V3. Neutral to Ground: 700 V for 208Y/120 V4. Line to Line: 1200 V for 208Y/120 V

E. SCCR: Equal or exceed 200 kA

F. Inominal Rating: 20 kA

2.4 ENCLOSURES

A. Indoor Enclosures: NEMA 250, Type 1

B. Outdoor Enclosures: NEMA 250, Type 4X

PART 3 - EXECUTION

3.1 INSTALLATION

A. Comply with NECA 1.


264313 - 4

B. Install an OCPD or disconnect as required to comply with the UL listing of the SPD.

C. The TVSS shall be installed on the load side of the over-current protective device.

D. SPD category “1” shall be mounted at the service transformer, Category “2” shall be mounted atthe service disconnecting means, Category “3” shall be mounted at the branch panel andCategory “4” shall cover the entire system.

E. Install SPDs with conductors between suppressor and points of attachment as short and straightas possible, and adjust circuit-breaker positions to achieve shortest and straightest leads. Do notsplice and extend SPD leads unless specifically permitted by manufacturer. Do not exceedmanufacturer's recommended lead length. Do not bond neutral and ground.

F. Use crimped connectors and splices only. Wire nuts are unacceptable.

G. Complete startup checks according to manufacturer's written instructions. Energize SPDs afterpower system has been energized, stabilized, and tested.


A. Perform the following tests and inspections with the assistance of a factory-authorized servicerepresentative.

1. Compare equipment nameplate data for compliance with Drawings and Specifications.2. Inspect anchorage, alignment, grounding, and clearances.3. Verify that electrical wiring installation complies with manufacturer's written installation

requirements.

B. An SPD will be considered defective if it does not pass tests and inspections.

C. Prepare test and inspection reports.

3.3 DEMONSTRATION

A. Engage a factory-authorized service representative to train the Owner's maintenance personnelto operate and maintain SPDs.


1847 INTERIOR-EXTERIOR LIGHTING 265100 - 1

SECTION 265100 – INTERIOR - EXTERIOR LIGHTING

PART 1 - GENERAL

1.1 SUMMARY


1. Interior-Exterior solid-state luminaires that use LED technology.2. Emergency LED power units.3. Exit signs.4. Lighting fixture supports.5. Poles and accessories.


1. Section 260923 "Lighting Control Devices" for automatic control of lighting, includingsensors.

2. Section 262726 "Wiring Devices" for lighting dimming controls.

1.2 DEFINITIONS

A. CCT: Correlated color temperature.

B. CRI: Color Rendering Index.

C. Fixture: See "Luminaire."

D. IP: International Protection or Ingress Protection Rating.

E. LED: Light-emitting diode.

F. Lumen: Measured output of lamp and luminaire, or both.

G. Luminaire: Complete lighting unit, including lamp, reflector, and housing.



1. Arrange in order of luminaire designation.2. Include data on features, accessories, mounting, and finishes.3. Include physical description and dimensions of luminaires.4. Include emergency lighting accessories.5. Include life, output (lumens, CCT, and CRI), and energy efficiency data.


6. Photometric data and adjustment factors based on laboratory tests, complying IES LM-79and IES LM-80.

a. Manufacturers' Certified Data: Photometric data certified by manufacturer'slaboratory with a current accreditation under the National Voluntary LaboratoryAccreditation Program for Energy Efficient Lighting Products.

B. Product Schedule: For luminaires and LED’s. Use same designations as indicated on theDrawings.

C. Shop Drawings:

1. Provide details of nonstandard or custom lighting fixtures. Indicate dimensions, weights,methods of field assembly, components, features, and accessories.

D. Warranty Information: Submit warranty information indicating compliance with section 1.7below and provide complete contact information (Company Name / Department Name / Pointof Contact / Phone Number / Fax Number / Email) for all lighting fixture and lighting fixturecomponent manufacturers that reflect the direct point of contact the Owner would notify in theevent of a warranty issue.




A. Luminaire Photometric Data Testing Laboratory Qualifications: Luminaire manufacturer'slaboratory that is accredited under the NVLAP for Energy Efficient Lighting Products.

B. Provide luminaires from a single manufacturer for each luminaire type.

C. Each luminaire type shall be binned within a three-step MacAdam Ellipse to ensure colorconsistency among luminaires.

D. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70,by a qualified testing agency, and marked for intended location and application.

E. NRTL Compliance: Luminaires for hazardous locations shall be listed and labeled for indicatedclass and division of hazard by an NRTL.

F. Comply with NFPA 70.

1.6 DELIVERY, STORAGE, AND HANDLING

A. Protect finishes of exposed surfaces by applying a strippable, temporary protective coveringbefore shipping.

For integrally manufactured (i.e. not modular) products, a minimum ten (10) year “full” warranty to L70 is required to cover the fixture in its entirety including all drivers, LEDs, lighting arrays, etc.For modular manufactured (i.e. separate LED elements and drives) products, a minimum ten (10) year warranty to L70 is required to cover the LED elements and a minimum five (5) year warranty to L70 to cover the driver.


1.7 WARRANTY

A. Warranty: Manufacturer and Installer agree to repair or replace components of luminaires thatfail in materials or workmanship within specified warranty period.

A. LED Fixtures:

1. For integrally manufactured (i.e. not modular) products, a minimum ten (10) year “full”warranty to L70 is required to cover the fixture in its entirety including all drivers, LEDs,lighting arrays, etc.

2. For modular manufactured (i.e. separate LED elements and drives) products, a minimumten (10) year warranty to L70 is required to cover the LED elements and a minimum five(5) year warranty to L70 to cover the driver.

B. Exit Signs: The entire unit shall be warranted for five (5) years. Maximum LED failure rateshall be 25% within a seven (7) year period; otherwise, if exceeded, manufacturer shall replacethe complete unit at no charge to the owner.

C. Warranties noted above shall start from the date of project “Final Acceptance”.

PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. Products: Subject to compliance with requirements, provide products by one of the followingexcept as otherwise permitted on the Light Fixture Schedule:

1. Columbia Lighting / Brands2. Hubbell Lighting / Brands3. Eaton Lighting / Brands

2.2 LED LUMINAIRE REQUIREMENTS


B. NRTL Compliance: Luminaires for hazardous locations shall be listed and labeled for indicatedclass and division of hazard by an NRTL.

C. FM Global Compliance: Luminaires for hazardous locations shall be listed and labeled forindicated class and division of hazard by FM Global.

D. Recessed Fixtures: Comply with NEMA LE 4.

E. Bulb shape complying with ANSI C79.1.

F. LED base complying with ANSI C81.61.

G. CRI of minimum 90 unless otherwise indicated on plans.


H. CCT of 3500 K unless otherwise indicated on the plans.

I. Internal driver. Drive shall comply with requirements of NEMA 410 including in-rushrequirements. Provide minimum 2.5kV surge suppression integral with the driver.

J. Fixture shall comply with NEMA standards for “flicker”.

K. 0.9 power factor of minimum.

L. Maximum 20% Total Harmonic Distortion (THD), however; where 10% THD is available,fixtures shall be provided with maximum 10% THD.

M. Luminaires shall be listed on the LED Lighting Facts website (www.lightingfacts.com), EnergyStar website (www.energystar.gov), and the DesignLights Consortium website(www.designlights.org).

N. Nominal Operating Voltage: As indicated on plans.

O. Except as specifically noted otherwise, luminaires utilizing LED light sources shall be integralfixtures with LED array / drives manufactured as a complete luminaire. Fixtures thatincandescent / fluorescent based with LED bulbs are not acceptable except as specificallyidentified in the Light Fixture Schedule shown on the plans.

P. Lighting controls devices shall be fully compatible with the light fixtures that they control.Contractor shall be responsible for coordinating final lighting control device and light fixtureselection to ensure compatibility and proper operation is provided in accordance with thedrawings and the specifications herein. Refer to Section 260923 “Lighting Control Devices”and Section 262726 “Wiring Devices” for additional requirements.

Q. Refer to “Light Fixture Schedule” on plans for additional requirements.

R. All metal parts shall be free of burrs, sharp corners and edges.

S. Sheet metal components for interior fixtures shall be steel unless otherwise indicated. Form andsupport of fixture shall prevent warping and sagging.

T. Use luminaires with 80% Visual Comfort Probably (VCP) minimum.

2.3 EMERGENCY LED POWER UNIT

A. Products: Subject to compliance with requirements, provide products by one of the following:

1. Dual-Lite2. Iota3. Bodine

B. Internal Type: Self-contained, modular, battery-inverter unit, factory mounted within lightingfixture body and compatible with fixture driver. Comply with UL 924.


1. Emergency Connection: Operate the fixture continuously at a minimum of 1/3 thenormal lumen output of the fixture for a minimum of 90 minutes. Connect unswitchedcircuit to battery-inverter unit and switched circuit to fixture driver.

2. Test Push Button and Indicator Light: Visible and accessible without opening fixture orentering ceiling space.

a. Push Button: Push-to-test type, in unit housing, simulates loss of normal powerand demonstrates unit operability.

b. Indicator Light: LED indicates normal power on. Normal glow indicates tricklecharge; bright glow indicates charging at end of discharge cycle.

3. Battery: Sealed, maintenance-free.4. Charger: Fully automatic, solid-state, constant-current type with sealed power transfer

relay.5. Ceiling luminaire should have the following criteria:

a. Match other space luminaire.b. Have 90-minute minimum illuminance time capacity.c. Have 24-hour maximum recharge time from rated illuminance time.d. Have low voltage disconnection circuitry to prevent battery damage.e. Have short circuit protection.

2.4 EMERGENCY LIGHTING UNITS



B. General Requirements for Emergency Lighting Units: Self-contained units complying withUL 924.

1. Battery: Sealed, maintenance-free.2. Charger: Fully automatic, solid-state type with sealed transfer relay.3. Operation: Relay automatically turns lamp on when power-supply circuit voltage drops

to 80 percent of nominal voltage or below. Lamp automatically disconnects from batterywhen voltage approaches deep-discharge level. When normal voltage is restored, relaydisconnects lamps from battery, and battery is automatically recharged and floated oncharger.

4. Test Push Button: Push-to-test type, in unit housing, simulates loss of normal power anddemonstrates unit operability.

5. LED Indicator Light: Indicates normal power on. Normal glow indicates trickle charge;bright glow indicates charging at end of discharge cycle.

6. Wire Guard (where indicated): Heavy-chrome-plated wire guard to protect lamp heads orfixtures listed for use with the fixture.


2.5 EXIT SIGNS



B. General Requirements for Exit Signs: Comply with UL 924; for sign colors, visibility,luminance, and lettering size, comply with authorities having jurisdiction.

C. Internally Lighted Signs:1. Lamps for Normal/Emergency Operation: LEDs, 50,000 hours minimum rated lamp life,

5 watts or less. Maximum LED failure rate shall be 25% within a seven (7) year period;otherwise, if exceeded, manufacturer shall replace the complete unit at no charge to theowner.

2. Provide integral automatic charger in a self-contained power pack for battery back-up:

a. Battery: Sealed, maintenance-free.b. Charger: Fully automatic, solid-state type with sealed transfer relay.c. Operation: Relay automatically energizes lamp from battery when circuit voltage

drops to 80 percent of nominal voltage or below. When normal voltage is restored,relay disconnects lamps from battery, and battery is automatically recharged andfloated on charger.

d. Test Push Button: Push-to-test type, in unit housing, simulates loss of normalpower and demonstrates unit operability.

e. LED Indicator Light: Indicates normal power on. Normal glow indicates tricklecharge; bright glow indicates charging at end of discharge cycle.

2.6 MATERIALS

A. Metal Parts:

1. Free of burrs and sharp corners and edges.2. Sheet metal components shall be steel unless otherwise indicated.3. Form and support to prevent warping and sagging.

B. Steel:

1. ASTM A36/A36M for carbon structural steel.2. ASTM A568/A568M for sheet steel.

C. Stainless Steel:

1. 1. Manufacturer's standard grade.2. 2. Manufacturer's standard type, ASTM A240/240M.

D. Galvanized Steel: ASTM A653/A653M.


E. Aluminum: ASTM B209.

F. Doors, Frames, and Other Internal Access: Smooth operating, free of light leakage underoperating conditions, and designed to permit access to internal components (e.g. lamps, ballasts,drivers, LED arrays, etc.) without use of tools. Designed to prevent doors, frames, lenses,diffusers, and other components from falling accidentally during maintenance activities andwhen secured in operating position.

G. Factory-Applied Labels: Comply with UL 8750 and 1598 as applicable. Locate labels wherethey will be readily visible to service personnel, but not seen from normal viewing angles.

1. Label shall include the following characteristics at a minmum:

a. "USE ONLY" and include specific lamp type where applicable.b. Lamp diameter, shape, size, wattage, and coating where applicable.c. CCT and CRI for all luminaires.

H. Reflecting surfaces shall have minimum reflectance as follows, unless otherwise indicated:

1. White Surfaces: 85 percent.2. Specular Surfaces: 83 percent.3. Diffusing Specular Surfaces: 75 percent.4. Laminated Silver Metallized Film: 90 percent.

I. Diffusers and Globes:

1. Acrylic Lighting Diffusers: 100 percent virgin acrylic plastic. High resistance toyellowing and other changes due to aging, exposure to heat, and UV radiation.

a. Lens Thickness: At least 0.125 inch minimum unless otherwise indicated.b. UV stabilized.

2. Glass: Annealed crystal glass unless otherwise indicated.

J. Lenses and Refractors Gaskets for Exterior Fixtures: Use heat- and aging-resistant resilientgaskets to seal and cushion lenses and refractors in fixture doors.

K. Exterior wall mounted fixtures shall be vandal resistant. Housing material shall be die case orextruded aluminum with all welds & fasteners concealed. All exposed hardware shall bestainless steel construction unless otherwise noted.

L. Variations in finishes are unacceptable in the same piece. Variations in finishes of adjoiningcomponents are acceptable if they are within the range of approved Samples and if they can beand are assembled or installed to minimize contrast.

2.7 LIGHTING FIXTURE SUPPORT COMPONENTS

A. Comply with Section 260529 "Hangers and Supports for Electrical Systems."

B. Single-Stem Hangers: 1/2-inch steel tubing with swivel ball fittings and ceiling canopy. Finishsame as fixture.


C. Twin-Stem Hangers: Two, 1/2-inch steel tubes with single canopy designed to mount a singlefixture. Finish same as fixture.

D. Wires: ASTM A 641/A 641M, Class 3, soft temper, zinc-coated steel, 12 gauge.

E. Wires for Humid Spaces: ASTM A 580/A 580M, Composition 302 or 304, annealed stainlesssteel, 12 gage.

F. Aircraft Cable Hangers: Stainless steel hardware and tool-less adjustable.

G. Rod Hangers: 3/16-inch minimum diameter, cadmium-plated, threaded steel rod.

H. Exterior wall mounted fixtures shall be securely mounted. Plastic anchors are not allowed.

I. Mountings, Fasteners, and Appurtenances: Corrosion-resistant items compatible with supportcomponents.

1. Materials: Shall not cause galvanic action at contact points.2. Anchor Bolts, Leveling Nuts, Bolt Caps, and Washers: Hot-dip galvanized after

fabrication unless otherwise indicated.3. Anchor-Bolt Template: Plywood or steel.

PART 3 - EXECUTION

3.1 INSTALLATION

A. Lighting fixtures: Set level, plumb, and square with ceilings and walls. Install LED’s in eachfixture if the LED’s are not provided with the light fixtures.

B. Confirm all fixture mounting heights / locations with Architectural / Interior Plans prior torough-in.

C. Comply with NECA 1.

D. Do not share neutrals on any lighting circuits.

E. Supports: Comply with NFPA 70 for minimum fixture supports.

1. Sized and rated for luminaire weight.2. Able to maintain luminaire position after cleaning and re-lamping.3. Provide support for luminaire without causing deflection of ceiling or wall.4. Luminaire mounting devices shall be capable of supporting a horizontal force of 100

percent of luminaire weight and vertical force of 400 percent of luminaire weight.

F. Flush-Mounted Luminaire Support:

1. Secured to outlet box.2. Attached to ceiling structural members at four points equally spaced around

circumference of luminaire.3. Trim ring flush with finished surface.


4. Refer to drawings for additional requirements.

G. Suspended Lighting Fixture Support:

1. Pendants and Rods: Where longer than 48 inches brace to limit swinging.2. Stem-Mounted, Single-Unit Fixtures: Suspend with twin-stem hangers.3. Continuous Rows: Use tubing or stem for wiring at one point and tubing or rod for

suspension for each unit length of fixture chassis, including one at each end.

H. Wall-Mounted Luminaire Support:

1. Attached to structural members in walls2. Do not attach luminaires directly to gypsum board.

I. Ceiling-Grid-Mounted Luminaires:

1. Secure to any required outlet box.2. Use approved devices and support components to connect luminaire to ceiling grid and

building structure.3. Where a recessed fixture replaces a section or part of a ceiling tile, fixture is to be

supported at the two (2) opposite ends to the steel frame of the building. Supports shall beprovided with the same type of wire as used to support the lay-in ceiling track, and shallbe distinguished by color and tag. Attach end of the wire to one corner of the luminaireand the other end to the buildings structural system. The lay-in luminaire shall then bescrewed to the main runners of the lay-in ceiling track at all four (4) corners using sheetmetal screws. For fire rated suspended ceiling, luminaire shall be supported to thebuilding structure as per the ceiling design criteria, luminaire shall then be screwed to themain runners of the suspended ceiling track at all four (4) corners using sheet metalscrews.

4. Refer to drawings for additional requirements.

J. Exit signs shall not be switched and shall remain on at all times.

K. Adjust aimable lighting fixtures to provide required light intensities.

L. Connect wiring according to Section 260519 "Low-Voltage Electrical Power Conductors andCables."

3.2 IDENTIFICATION

A. Identify system components, wiring, cabling, and terminals. Comply with requirements foridentification specified in Section 260553 "Identification for Electrical Systems."



1. Operational Test: After installing luminaires, switches, and accessories, and afterelectrical circuitry has been energized, test units to confirm proper operation.


2. Test for Emergency Lighting: Interrupt power supply to demonstrate proper operation.Verify transfer from normal power to emergency power and retransfer to normal.

a. Perform a test on each exit sign, emergency fluorescent power unit and emergencylighting unit after it is permanently installed and charged for a minimum of 24hours. Battery shall be tested for 90 minutes, in accordance with NEC 700. Thebattery test shall be done 10 days prior to final inspection by the engineer ofrecord. Any unit which fails the test must be repaired or replaced, and tested again.Copy of the test report shall be sent to the engineer or record and the Wake Countyproject manager.

B. Luminaire will be considered defective if it does not pass operation tests and inspections.

C. Prepare a written report of tests, inspections, observations, and verifications indicating andinterpreting results. If adjustments are made to lighting system, retest to demonstratecompliance with standards.


Date post:	14-Feb-2022
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