Appendix 1- Electrical Contractor’s Requirements › cms › lib2 › TX01001591...he/she the...

Appendix 1- Electrical Contractor’s Requirements

Houston Independent School District Project Number: 16-06-02

ELECTRICAL SERVICE MAINTENIENCE AND REPAIR

SPECFICATIONS AND PRICING

I. Performance of Work

All work is to be completed in a neat, order and workmanlike manner consistent with accepted standards of safe installations within the electrical industry. All installed circuits and equipment are to be installed in a safe manner in compliance with the Texas Department Licensing and Regulation Electrical Division (TDLR), the current 2014 National Electrical Code (NEC-70), the National Fire Protection Association, Life safety in the Workplace (NFPA 70-E), the Local City Electrical Ordinances current Code Edition, and shall conform to the HISD Electrical Standards and Guidelines as shown in XVI pages 68-79. In addition, standard codes by the following organizations shall apply on this contract: ANSI American National Standards Institute ASTM American Society for Testing and Materials IBC International Building Code ICC International Code Council IECC International Energy Conservation Code IEEE Institute of Electrical and Electronic Engineers IESNA Illuminating Engineering Society of North America ISO International Organization for Standardization NEC Current National Electrical Code (70) NEC Current Latest National Electrical Code (70E) NETA Nationa Electrical Testing Association NEMA National Electric Manufacturers Association NFPA National Fire Protection Agency UL Underwriters Laboratories

Definitions

The word “Electrical Contractor” shall refer to the Electrical Contractor who is currently in business and performing electrical work only. The Qualified Contractors shall be an Electrical Contracting Services Only. This Electrical Contractors are knowledgeable, skills, competent, electrical business oriented, NEC Code expert and knows the electrical trade. No General Contractor allowed in this contract.

The word “Master Electrician” is a working active employee of the company that has the authority to direct and supervise jobs with the technical knowledge to

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interpret the Code. An “acting” master electrician does not meet the requirements of this contract and not is allowed under this contract. The term “Work” includes all labor, materials and equipment necessary to provide the service or services as requested per this RFP document in the Scope-of-Work.. The term “Date of Final Acceptance” shall be the date when Owner (HISD Representative) has walk-through with the electrical contractor and the “work” is signed off by the authorized HISD Representative. (Close-Out Job Form). The Contractor must request a 24 hours notice in advance to this office for verification abd field inspection.

II. Material Specifications

Any material referred to in these standards with the notation "or approved equal" may be substituted provided the following conditions are met: Material or product substitutions must be listed in writing with detail regarding the manufacturer, the description of the product and the price. Substitutions may be allowed if the product is equal to or better and is subject to the discretion of HISD Electrical Manager. Suggested substituted products must be submitted in writing to the office of HISD Electrical Manager (HISD Designated Representative), Hector A. Bello at 713-671-3250 and approved prior to the beginning of the job or any work being performed, no exceptions.

Any substituted material delivered to the job site without prior written approval will be rejected at the sole discretion of the HISD, Electrical Manager. All materials shall be new and listed approved unless a re-furbished item is requested by HISD. All materials shall be made in United States of America.

III. Examination of the Job Site

The awarded bid supplier and/or suppliers will be held responsible to visit each jobsite and premises to determine the existing conditions under which services will be performed as required under this RFP. The awarded contractor will not be offered any allowances or concession for any error or negligence resulting from failing to properly survey the jobsite conditions. A typed proposal of the desired “work” and location is then submitted to the HISD Electrical Construction & Facilities Services Manager. The proposal shall contain itemized pricing and full description of the scope-of-work, materials, parts, labor, permits, equipment, and subcontractor work as noted in the definition and all additional items not listed in this RFP. Sketch drawings, dimensions, identification of equipment, devices and etc has to be submitted with the bid proposal. Email is the desired method of communication for job




proposals and documentation on this contract and strongly recommended for bidder to have this capability.

IV. Building Electrical Permit(s) and Clearance(s)

All electrical work within HISD schools and facilities require an electrical permit which must comply with the appropriate ordinances as outlined by the cities of Bellaire, Houston, Jacinto, West University Place and Texas Department of Licensing and Regulation.

The Electrical Contractor must POST a copy of the following notices in the school’s main office

or main office of facility: a. Building Electrical Permit b. Asbestos Clearance c. Underground Work Clearance (if applicable) No work will be allowed unless permit and asbestos clearance are posted first prior to begin the work. Each Electrical Contractors’ employees must be certified with a (2) two hours Asbestos Awareness Training before they will be able to work in HISD Schools and Facilities. Certification must be obtained at 228 McCarty Drive, Houston, Texas 77029, at the CFS-Environmental Affairs Department at (713)-676-9379 or (713) 676-9464. NOTE: It shall be the responsibility of the Electrical Contractor to resolve any conflicts between the Representative Code of Authority such as, the City Inspectors and State Inspectors (TDLR). Each job performed within the HISD schools and facilities requires certificates of acceptance or approval upon completion of the work from the building city inspector and HISD Designated Representative. The project permit number must be submitted with the invoice with the approval date and either faxed or emailed to: HISD Electrical Construction and Facilities Services Manager, attention Hector Bello at fax number 713-220-5029 or email address, [email protected]. All boring, ceiling, wall cover work shall require an inspection before and after verified by HISD Electrical Construction and Facilities Services. All underground work shall require an inspection after verified by HISD Electrical Construction and Facilities Services. Electrical service entrance and feeder conductors shall be installed in rigid conduit for any underground of not less than 36 inches depth, in red pour concrete encasement plus two red caution tapes. All buried electrical conduits, other than the service entrance and feeders, are to be 24 inches in depth, in red pour concrete encasement covered with caution red tape before backfill. Underground conduit must be run level below the ground, install as neat and be parallel to




each other. It is the responsibility of the contractor to notify the Electrical Construction and Facilities Services Department for site inspections and verification of the depth clearance. Electrical Contractor shall provide signs and/or barricades preventing students from falling into the ditch/construction area. Electrical Contractor will insure that the grounds are properly level and grass is well distributed after the underground work and/or boring work is complete. No allowances shall be made. Failure to do so will result in the contractor being responsible for the cost and labor to have the area reworked. Contact the HISD Electrical Construction and Facilities Services Manager, 713-671-1794, 24 hours in advance to schedule inspection. (Manager Name to be advised to awarded bid suppliers).

IV. CONTRACTOR QUALIFICATIONS

1. The electrical contractor must have at least 5 plus years history of verifiable work experience in the electrical industry.

2. The electrical contractor must have an active working master electrician on company staff or

he/she the master of the company. The master electrician, journeyman electricians, and apprentice electricians are to be registered in the State of Texas (TDLR) and Municipalities of which they will perform the electrical work such as City of Houston, City of Bellaire, City of Jacinto, and City of West University where to perform the work. . Part-time and leasing master license is strictlty prohibited. The electrical contractor must be a holder of the said company not from anybody else contractor license.

3. The electrical contractor shall provide a copies of their current licensed electricians who would

be working in HISD School and Facilities. This information must be submitted with bid proposal package. This information shall be updated periodically as new employees come aboard on staff.

4. The electrical contractor shall employ qualified, trained, competent licensed electricians to work on HISD Schools and Facilities. Apprentice electricians shall work on HISD jobs only under the direct supervision of a journeyman or a master electrician. The electrical master electrician must regularly visit the jobsite to ensure safety protocol, stability and efficiency of work. He/She must provide direct supervision, technical code interpretation and safety of their employees.

5. The electrical contractor and electricians must be knowledgeable regarding the current NEC-70 and NFPA-70E in all working phases of electrical construction, installation, repairs, troubleshooting, motor controls, lubrication, lighting design layout, replacing stadium lights, and underground work. The electrical contractor must be able to work at the following voltages:

i. 120/240 Volt, Single-Phase, 3 Wire System ii. 120/208 Volt, 3-Phase, 4 Wire, Wye System




iii. 120/240 Volt, 3-Phase, 4 Wire, Delta System iv. 277/480 Volt, 3-Phase, 4 Wire, Wye System v. 480 Volt, 3-Phase, 3 Wire, Delta System

6. The electrical contractor shall be knowledgeable and background in lighting design layout and

be able to make recommendations on lighting efficiency and quality of light. The field electricians must follow Safety Procedures such as, Lock/out/Tagout and proper Personal Protective (PPE), Fall Protection Hazards in compliance with NFPA 70-E when performing electrical work, troubleshooting, and installing equipment. This training is part of a company Safety Training program with no additional charge(s) to HISD to perform their work. Do not employ any unfit electricians working in HISD facilities. The electricians that are working in HISD facilities are to be holder on an electrical licenses, properly train, receive sufficient electrical job training, safety training, motivated, enforce and practice safety in the workplace. Provide safety training records and electrical licenses of each employee working with HISD facilities. The Electrical Contractors must provide a copies of all license electricians working in the Houston ISD schools and facilities. Job orders and invoices shall be reviewed by Hector Bello or other HISD Electrical Manger 1. Job Layout.

a. Walk and visit existing job to get familiarize with the scope of work.

b. Provide a sketch lay-out of the scope of work to perform.

c. Provide the material lists that corresponds to the scope of work and the amount of the work.

d. Provide a company proposal that corresponds to the work to be done.

2. Job Completion.

a. Provide a copy of the proposal, sketches drawing, invoices, electrical permit, asbestos clearance, a notarized letter of warranty stating the date Start and End, and Bonds if required.

Master Electrician Responsibilities:




1. The Master Electrician in this contract shall be an active employee of the said Electrical Contractor Only. Part-Time or leased licenses as Master Electrician are strictly prohibited and not allowed.

2. The Master Electrician in this contract shall be competent, knowledgeable of the NEC Code, experience, skills, well-motivated, make excellent decisions, and have proper training in the electrical industry.

3. The Master Electrician shall provide supervision to his employees, including scheduling, planning and supervision.

4. The Master Electrician shall be knowledgeable and Code expert savvy, competent, receive proper electrical training, very responsible, dependable and excellent decision making.

5. The master electrician shall enforce and practice safety in the workplace.

6. The master electrician shall provide safety training and training to their employees.

V. ELECTRICAL CONTRACTOR RESPONSIBILITY

1. The electrical contractor shall take all necessary precautions for the safety of the administration staff and students at the school, and other persons who may be affected thereby. The work shall comply with all applicable provisions of Federal, State, OSHA and Municipal safety laws to prevent accidents or injury to persons on, about, or adjacent to the premises where the work is being performed.

2. The electrical contractor shall be solely responsible for all service means, methods, techniques,

sequences and procedures and for coordinating all portions of work.

3. The electrical contractor is responsible for providing temporary electrical power required for the construction activities. It is not the responsibility of the owner (HISD) to provide temporary power.

4. The electrical contractor is responsible for submitting the electrical drawing to the city for permit and placement fees. Any corrections needed it is the contractor’s responsibility to make adjustments at no additional charge to HISD. Correction of work shall be accomplish within 2 to 3 business day. The approved drawings shall be submitted to the HISD Owner.

5. The electrical contractor shall be responsible for any damages on HISD property, electrical,

equipment and unforeseen work during visitation, during the energizing stage of equipment and/or during the actual performance of work. If it is determined that the contractor is at fault for any damage on equipment, property and/or any component, it is the contractor is responsible for the cost of equipment, property (replacement) and labor.




6. The electrical contractor must notify HISD Electrical Construction and Facilities Services

Manager, Hector Bello, when installing a new panel to an existing electrical panel. Failure to do so will result in the contractor being responsible for the damage cost of labor and materials for all the work done.

7. It is the responsibility of the electrical contractor to pull a necessary permit and pay utility fees

of the outages. The electrical contractor must notify the outages to Hector Bello, HISD Electrical Construction and Facility Services Manager at 713-671-3250 during daytime hours of 7 am-4:00 pm or call the emergency number at 713-671-3250 after daytime hours, weekends and holidays.

8. The electrical contractor must Meg and tests all circuits before TURN- POWER ON of the

circuit breaker for operation. This should be done before the energized stage. MCC Controllers shall be provided with power phase failure relay, over and under voltage inbalance protection. Failure to do so, the consequence falls on the electrical contractor for the damages.

9. The electrical contractor is required to mark the phases, neutral, grounding conductors on

existing regardless of the voltages. Properly check motors for proper rotation and phase rotation. Failure of the compliance will be the electrical contractor’s responsibility for the cost of equipment (replacement) and labor. All conductors either branch circuits, feeders, and service entrance conductors, the wire insulation shall color for the entire length. Do not use electrical tape to marked the wire insulation.

10. The electrical contractor is required to group the circuits, Phases A, B and C and neutral in the

panelboard as per NEC 2014. Label the circuits with circuit numbers in each conductors, conduits, pull & junction boxes, and device plates.

11. The electrical contractor shall install a swing front hinged dead cover (through & through)

for all panels and panelboards. There is no exception.

12. All wiring devices such as receptacles, switches and etc must use pigtail wiring before terminating to a device. All electrical wiring must properly splice by twisting the wires together and uses approved and listed compression wire nuts for the application. Do not use end to end butt-splicing connector for any wiring.




13. All circuits must be electrically bonded from the incoming service disconnecting means to the

last branch circuits per Article 250 of the NEC.

14. Any circuits longer than 200 feet in length must calculate the voltage drop of at least 3% for branch circuit and 2% for feeders. Do not cut the strands of the wire to downgrade the ampacity and just to fit into a mechanical lug. HISD reserves the right to instruct the contractor to replace it. Do not make splicing between the branch circuit/feeders circuit breaker and the load/power panel.

15. The electrical contractor must extend the conductor wiring up to the top of the marquee sign terminal lugs is located. No splices at the bottom of the junction box or bell box.

16. In a new switchboard install and circuit breakers downstream shall be coordinated to the Ground Fault Settings function at the main electrical service based upon the Coordination Selective Study. New Ground Fault main breaker must be tested by certified Third Party. The test results, adjustment data and copy of the Coordination Selective Study shall be provided to HISD Electrical Construction and Facility Services Department. It shall be recommended that any additional circuit breaker added to an existing switchboard or new switchboard a Selective Coodination Study shall be perform by a Certified Third Party. This will include the Infrared Testing (baseline), and test of the main circuit breaker by Injection test. Bollards must be install to protect the switchgear/switchboard install on exterior.

17. The electrical contractor must follow Safety Procedures such as Lockout and Tagout procedures during shut down and energized stage. The electricians must wear proper personal protective equipment (PPE) when working on energize equipment within the danger zone and must be compliance of NFPA –70(E). This procedure is part of the installed price and a part of the normal course of work for providing electrical services.




18. It is the responsibility of the electrical contractor to notify this office of any electrical work that is

requested by other departments and schools. Written proposals must be forwarded to the HISD Electrical Construction and Facility Services Manager, and the Buyer, Procurement Services Department. Email is the method of communication for job proposals and documentation on this contract and recommended for bidder(s) to have this capability. NOTE: Proposals are subject to review by the Electrical Construction and Facility Services Manager, Hector Bello prior to purchase. Contractor may be requested to revise proposal for a specific job if it is deemed necessary by Manager based upon specific job location, technical review and pricing. Contractor shall be allowed a time period of forty-eight (48) hours to respond with a revised written proposal. Contractor shall designate on proposal specific revisions and designate the revised proposal reference number as such. Failure to follow this procedures, the contractor will receive a written notice for Unsatisfactory performance per RFP.

19. The electrical contractor shall email a copy of the electrical proposal to the HISD Electrical

Construction and Facility Services Department for review before any routine work can be ordered. The electrical bid shall state the scope of work, the location of the work and the itemized listing of required materials, equipment, labor hours, demo labor hours each type of electricians (must be specific), written proposal from subcontracting work, TDLR Rules and associated itemized pricing. The electrical proposal shall clearly described the materials, attach any supporting invoices from a subcontracting company, re-furbished materials and drawings. The electrical contractor license and master license must indicate in the proposal.

20. Purchase Orders shall be issued to authorize the Electrical Contractor to be able to perform

work. Revisions or change orders are not allowed to the scope of work unless first approved by the HISD Electrical Construction and Facility Services Manager. Revisions must be in the written Proposal format and emailed to HISD Electrical Construction and Facility Services Manager and Buyer, Procurement Services Department. If authorized, the additional work would be added as a change order and the Contractor would receive a copy of the change order notating the additional work.

EMERGENCY CALL OUTS do not require a purchase order to being the work; however, the HISD Electrical Construction and Facilities Services Manager or designee must be contacted at 713-671-3250 prior to start of work. Contractor shall provide the follow-up written proposal for emergency work performed in the standard proposal format with the itemized pricing within 24 hours after the work is done. Response time within an hour after calling.

21. The electrical contractor must be able to respond to an emergency request within half-an- hour

to hour after being contacted.




22. Contractor is responsible for materials and equipment on jobsite for the duration of project.

HISD is not responsible for any missing materials, tools, and equipment on HISD property. The electrical Contractor must be cautious not to damage any equipment, furniture and etc in the school campus. Any damages is the electrical contractor responsibility to replace the items.

23. All scrap wires, existing electrical equipment, and any unused materials from the job must be

turned-in to the Electrical Construction and Facilities Services Department at 228 Mc Carty Street, Houston, Texas 77029. Contact the Department at 713-671-3250 for direction. The electrical contractor must be responsible to safeguards all items as mentioned above. Any missing items must be back charged to the electrical contractor at their own cost.

24. The electrical contractor’s employees must regularly sign-in and sign-out when entering or

leaving the school campus at the front desk of the school’s main office.

25. Electrical Contractor employees shall not enter the teacher’s lounge unless it is necessary to perform the proposed electrical work.

26. The electrical contractor is responsible for any shortage materials that are not included in the

bid proposal. No additional cost after the proposal been submitted. The contractor shall comply with the proposal, short cut installation is permitted. (This contract is not a time and materials contract).

27. The electrical contractor shall include surge protection device (SPD) in all panelboard, and

switchboard that are critical loads such as computers, PDU’s, Main servers. All SPD shall be integral build-into the equipment.

28. The electrical contractor may be asked to provide the service field report and a weekly report

status of all work, incompleted and complete, in spreadsheet format. E-mail is the desired method sending the information.

29. The electrical contractor must include at least two electric heaters inside the switchboard for

humidity and condensation. Failure to do so is the contractor responsibility to absorb the cost. The buss weather head and switchgear must be painted with ANSI 61 grey color.

30. The electrical contractor may be asked to provide a weekly work schedule via email to

Electrical Construction and Facility Services Department Manager.

31. Do not install any conduits on-top of any switchboard. Damages will back charge to the said Electrical Contractor.

32. All underground conduits shall be install 48 inches below grade and shall be supported every 6 feet anchor to the ground. The conduits has to straight, level through the run. Sand pack




around the conduits before pouring the red concrete. If PVC is used make sure to provide expansion joints.

33. All conductors shall be color insulated throughout the entire length in all applications. Do not use take tape in identifying the color codings. All conductors must be identify with circuit numbers including devices such as receptacles, switches and others.

34. All electrical equipment that are mounted in the wall must be placed in unistrut.

35. Perform the Selective Coordination Study, Infrared (baseline) Study and Test the Main Circuit Breaker on new installation or adding a circuit breaker to the main switchgear.

36. Transformer hook-up, use a single ground bar to install all grounding wires and not using of single lugs.







37. Follow the HISD - MEP Standards on the HISD website: No Exceptions.

VI. CLEAN UP

Electrical Contractor shall keep the premises free from accumulation of waste materials and rubbish, implements, and surplus materials. Clean the premises area daily where the electrical work has been performed. If HISD has to hire another supplier to the cleanup after contractor, the contractor shall be responsible for the cost. For safety purposes, never leave any tools such as ladders, power tools or any equipment in the school hallways or jobsite.

VII. Supervision

The Electrical Contractor shall enforce at all times strict discipline and good order among his employees. When the Electrical Contractor has four (4) or more employees on the job site, a supervisor (Superintendent or Foreman level) must be present to oversee the project. The supervisor or quoting a job does not get compensated for time unless the supervisor is a working supervisor with tools and hands-on.

VIII. WARRANTY




The electrical contractor shall warranty materials, labor and workmanship not less than 12 months. Any defective parts and workmanship shall be replaced at the contractor‘s cost free-of-charge for travel and labor. The warranty period shall commence upon the walk-through from the Date of Final Acceptance agreement with the contractor and HISD Designated Representative. The electrical contractor must provide a formal letterhead to the Electrical Construction and Facility Services stating the time of warranty after HISD acceptance of the job. The contractor must have at least a 2 to 3 days to complete the corrections unless is urgent situation which is critical for instruction. All manufacturer warranty on materials shall be adhered to.

IX. Completion

The Electrical Contractor shall have twenty-five (25) calendar days after the issuance of a purchase order by the H.I.S.D. Procurement Services to complete the project, unless a longer period is agreed to in writing by HISD Electrical Construction and Facilities Services Department.

X. Final Inspection

The final inspection is to be made by a walk-through with the electrical contractor and the HISD Electrical Construction and Facility Services Department’s representative on the project. The approval and acceptance is completed prior to project being released for payment. Contact the Electrical Construction and Facility Services Department 24 hours in advance to schedule the walk-through. HISD shall not release payment until the job is complete and walk-through is conducted with both Contractor and HISD Electrical Construction and Facility Services Department personnel present.

XI. HISD Electrical Standards and Guidelines

Accessibility

A passageway must be maintained at all times, allowing access to switchgears, switchboards panels, etc. that require working space as per NEC, Section 110.26 but maintain not less than 7 feet infront of electrical equipment, 3 feet in the back and sides. These passages shall not be used for storage.

Apparatus Mounting

Mount electrical switch disconnects shall be mounted on unistrut at the height of 5 feet to 6 feet from the center grip handle. The transformers, panel boards, load center panels, disconnect, conduit, pull boxes etc., may be mounted in a unistrut channel against the building, except in the case of a pad mounted transformers. Electrical outlet and switches must be mounted at a height in compliance with ADA.




Color Code - HI-Leg to Ground

On a 4 wire Delta connected secondary where the mid point of one phase is grounded to supply lighting and similar loads, the phase conductor having the higher voltage to ground shall be identified by an outer finish that is orange in color. All ungrounded conductors, grounded (neutral) conductors and ground conductor shall have the insulation color outer finish continuously on the entire length. Electrical tape is not acceptable to marked as phasing. Grounding conductors No. 6 AWG copper and smaller, the insulation color thoughout the entire length. No tape is allowed.

Conduit (Galvanized rigid metal Conduit)

All conduits installed outdoors, in swimming pool areas and kitchen wet areas, and under fixed stable overhangs shall be Rigid Metal Conduit. Do not use intermediate conduit, PVC plastic conduit and EMT for outdoor installations. No conduits or Electrical Metallic Tubing (EMT) conduits shall be installed on temporary walkways, canopies and/or outdoor applications. Rigid Conduit shall be strapped with galvanized two-hole straps at 4' 0" intervals. When electrical conduit is run across a roof it shall be laid on weatherproofed wood block support assemblies consisting of one 6 inches x 6 inches x 12 inches block on unistrut on top of the wood block, set on edge and nailed with galvanized nails to a 2 inches x 6 inches x 1' 2" base block. These supports shall be a maximum of 6 feet 0 inches between intervals using one (1) two-hole pipe strap with No.10 x 1 inch Cadmium plated Sheet Metal Screws at each support to secure the conduit to the supports. The weatherproof wood supports for the electrical conduit shall be attached to the roof by removing approximately two foot square sections of loose gravel and dirt from the built-up roof then using roofing mastic to set the weatherproof wood blocks, and then replace the roofing gravel. Take precaution and apply the derate per Table 310.15(B) (3)(c) When the electrical conduit is mounted on building structure or surface such as walls, beams, trusses, or ceilings, the contractor will use two-hole pipe clamps and 4 feet – 0 inches center to center intervals to support the conduit. All other conduit shall be installed in trapeze with unistrut. Bonding over 250 volts where oversized, concentric, or eccentric knockouts shall be required to be bonded with a separate green wire to the enclosure. Use listed copper lug or multiple lugs for one or more grounding wire. No aluminum lugs shall be used.

Feeders that exceed 100 feet in length must have a pull box in between pull boxes but no splicing is allowed. Feeders install above the roof surface shall be install in rack not less than 24 inches in height. Comply with the current NEC per Table 310.15(B)(3)(c).




All conductors shall have no any splices between pull boxes on services, feeders and branch circuits homerun. All conduits, pull box, junction boxes, receptacles, switches shall be label/marked with circuit numbers. The panelboards, switchboard, MCC and etc shall be label with a Bakelite riveted to the metal surface.

Electric Metal Tubing

All interior conduits will be EMT and will be strapped with 2 hole-straps at 4' 0" intervals when installed on exposed surfaces. Flexible metal cable such as "BX" is only used by SPECIAL PERMISSION by Electrical Construction & Facilities Services Manager. Do not use MC cable or BX cable for power circuits or other circuits except for fixture whip to a less than 6 feet in length on MC cable with ground green wire conductor. If more than 3 conduits installed shall install in trapeze. All conduit must be supported every 6 feet intervals. Any concealed conduit must be install from the ceiling to a devices such as receptacles and switches.

Bonding over 250 volts where oversized, concentric, or eccentric knockouts shall be required to be bonded with a separate wire to the enclosure. Use the listed copper lug or multiple lugs for one or more grounding wire. No aluminum lugs shall be used. Each conduit ends shall have a insulated throat bushing in all conduit sizing.

Grounding

No ground rod shall be smaller than 3/4 inch x 10 feet. The smallest a grounding conductor shall be is No. 2 AWG copper wire. The grounding wire shall be enclosed with 3/4 inch rigid conduit when exposed to physical damage and terminate with a Blackburn clamp to a ground rod. On new main service entrance, grounding electrode conductor must be installed inside the switchboard and on the water pipe size according to NEC Table 250.66

Transformers must be grounded according to NEC Section 250.28, Section 250.66 and size by Table 250.66. All receptacles are to be grounded with an insulated conductor of the same size as the ungrounded conductors. The grounding green wire shall be connected to an approved terminal screw green color as per NEC Section 408.20. Do not use tha backside connections of the receptacle and any electrical devices.

For general purpose, each multi-wire circuits phase A, phase B, and phase C and neutral must have a common ground (green) wire on a three-phase 4-wire system. The ground wire shall be a continuous green in color up to No.6 AWG. Any equipment that is a non-linear load such as




computer, server shall have a separate neutral wire and ground wire for each phase and size accordingly per Article 250 of the NEC. See multiwire branch circuit per NEC 2014. All grounding conductors on the load side must be installed on separate grounding bar and not tie-in to the neutral bar. Do not use machine screws for this purpose.

Ground clamps shall be listed for the application that is connected to the grounding electrode conductor. No multiple grounding conductors shall be connected to a single clamp or fittings unless the clamp or fitting is listed for multiple purposes.

All grounding conductors must use a pigtail before connecting to any wiring devices. Isolating Ground

All new electrical service entrance must be grounded to the last panel board.

Kitchen Equipment and Concession Stand

Any dishwashers and booster heaters are to be equipped with an "On-Off" switch or "Start-Stop" station that has the "Off" position clearly marked. As per NEC section 110.26, there will be no disconnects, or other apparatus mounted beneath the machine, except hot water boosters. These boosters will become an integral part of the dishwasher and will be mounted toward the front edge and will be equipped with a bolted and gasket cover facing the middle of the room. As per NEC section 422.32, DISCONNECTS AND STARTERS must be mounted as close as to each other as possible (disconnect at the school service will not suffice). The dishwasher or booster heater is to be wired in rigid conduit with a short piece of liquid tight flexible metal conduit. The conduit is to be strapped at 4 feet intervals with approved strap and mounted 1/ 4 inch off the wall. The rigid conduit and spacers are to be installed in the Dishwasher area "ONLY". All conduit installed on the exterior of the buildings shall be Heavy Duty Rigid strapped at 4 feet intervals close enough to ensure a neat installation (intermediate conduit or plastic conduit will is not allowed). Flexible metal conduit shall be liquid-tight and shall be installed using the shortest possible length and still maintain flexibility. All kitchen equipment circuits will include a bond wire to be terminated as per NEC section 250.114. All bonding conductors shall be copper and sized as per NEC table 250.122. No bonding wire shall be smaller than No.12 AWG copper. Bonding over 250 volts where oversized, concentric, or eccentric knockouts shall be required to be bonded with a separate wire to the enclosure. Use listed copper lug or multiple lugs for one or more grounding wires.




Stove Hoods

The only wiring allowed inside the stove hood will be for lighting. The lighting shall be vapor proof with metal guards. These light fixtures may be wired using EMT and watertight couplings, connectors and other fittings. The tubing shall be strapped at no more than 3 feet intervals using approved straps and 1/ 4 inch spacers.

The entire installation must be heat resistant and grease proof. All wire used in the interior and exterior of the Range Hood shall have 90 degrees Celsius value installation and be stranded copper.

All switches, vent fans, etc., shall be wired from outside the Hood. All junction boxes shall have a bolted and gasket cover. (A bell box would be ideal if all unused openings are closed). All hood wiring is to be bonded as table NEC Section 250.122. The minimum size being No. 12 AWG copper stranded. The bonding wire is to be terminated as per NEC Section 250.112.

Light Fixtures, Exit Light, Emergency Light and LED Fixtures

Fluorescent fixtures must be electronic program start ballast, with 10% THD or less and the ballast factor of 0.82 or greater on wrap-around or troffer fixtures if occupancy sensor is used. Verify with the manufacturer the correct application. Emergency system such as exit light and egress light must be tie-in to existing exit light circuit in the building or ahead of the main service disconnect instead of any circuit in the building. Do not use the existing the circuit feeding to a receptacles or switches that fed a lighting circuit. Charge the batteries at the full capacity and drain up to 80% and put back into operation. Do not mismatch manufacturer for ballast and fluorescent lamps. Use only one manufactured in one job. Exit lights shall be new, prison grade battery back-up, LED fixtures. NOTE: Use light fixtures, ballast and lamps that are only specified. No substitute shall be made without prior approval. Properly dispose of all lamps and ballast’s in approved container. All lamps and ballast’s shall be disposed of by an EPA approved disposal company. Contractor is responsible for providing the documentation of the recorded counts of the ballast that has a PCB or assumed PCB and provides this to the HISD Designated Representative.

Light Fixture Installation

Provide standard bar hangers or other approved method to support light fixtures from structural members or ceiling suspension channels and inverted tees, of 1/2 inch minimum.




Provide steel member such as unistrut to secure the light fixture (luminaries) on hard flat ceiling surface. No fixture shall be mounted directly to the ceiling hard surfaces. Lighting fixtures (luminaries) shall be secured to ceiling grid on all four sides by clips or approved screws to the tees. Each fixtures (luminaries) shall be independently supported from the building structure with four wires; one on each corner of the fixture (luminaries). Use of tie-wire to support the ceiling grid is not accepted. When light fixtures (luminaries) are installed in a straight row, a chase nipple must be used between fixtures (luminaries). A ground green wire is required to bond each fixture attached to the grounding screw. Fixture whip must be secure to the building structure and no longer than 6 feet long. All other fixtures must be installed in a chain or all-thread rod or combination of both. Use galvanized steel or malleable iron studs for support of incandescent fixture. Use of die-cast stubs is not accepted.

Lighting layout must be designed for even distribution to meet the recommended foot-candle in every space area as recommend in Section (page 79).

Any lighting upgrade must be designed for each luminaries (fixture) with photometric layouts compare from the current and proposed layout identified during the lighting survey to maintain even distribution foot-candle meeting IESNA standards or HISD foot-candle standards. If the lighting level is less than the minimum acceptable levels the contractor shall install additional luminaries to meet the acceptable level foot-candle, at their expense. Reading should be taken at the height of 30 inches from the floor as recommended in section XVIII. All photometric lighting layout should be submitted to HISD Electrical Construction Facility and Services with the bid for review prior to installation. All lighting upgrade must be in compliance with the new 2000 Energy Conservation Code. Contractor will have to consider the Total Light Loss Factor (i.e. LLF) in the design of the lighting layout. The Light Loss Factor consists of:

• Initial Lumens (IL) • Design Lumens (DL) • Lamp Lumen Depreciation (LLD) • Ballast Factor (BF) • Loss Dirty Depreciation (LDD) • Coefficient Utilization (CU)




Use only recommended lighting fixtures that are approved by CFS Electrical Services Department. Any substitution made without prior approval will be rejected at the contractor’s expense. Cleaning: Clean lighting fixtures and diffusers prior to installation.

Ballast Specifications Ballast must be Electronic Program Start and Instant Start energy efficient, less than 10 percent total harmonic distortion (THD), rated at 50,000 starts switching cycle, 98 percent power factor, and 82 percent or better ballast factor. Instant Start ballast can only be used to replace an Instant Start Ballast. Compact fluorescent ballast shall be electronic, Program Start less than 10 % total harmonic distortion (THD). HID ballast shall be Pulse Start using vertically mounted pulse start lamps.

Ballast must be rated Class A sound rating, Program Start with a 0-degree F minimum starting temperature, UL, CSA Certified, Class P. Approved brands are to be seven years warranty from the date of delivery on material. Successful bidder must obtain a written warranty from manufacturer and submit this warranty to the HISD Designated Representative.

Lamps Fluorescent lamps shall be required to have a CRI of 82 or better and color temperature of 4100 degree Kelvin. Approved brands are to be three-year warranty from the date of delivery on material only. Successful bidder must obtain a written warranty from manufacturer and submit this warranty to the HISD Designated Representative. LED lamps or LED will be options.

Minimum Requirements for Lighting Illuminaires

Use of Space Foot-Candles Art Room 70 Auditorium 60 Cafeteria

Class & Examination 50 Regular 30-40

Classroom (regular) 45-50 Computer Room 40-50 Concessions Stand Kitchen – Cooking Area 70 Kitchen – Serving Area 70




Kitchen – Dishwashing 70 Corridor (Hall) & stairways 20 Drafting Classroom 75-100 Exterior Parking 2 – 4 Field Lighting Football Class II –50 Softball Class II – 50 Track-n-Field Class II – 50 Tennis Class II – 50 Volleyball Class III – 50 Gymnasium

Class 35 Competition 50

Home Economics Ironing 30 Class 60 Sewing 75 Janitor’s Closet 15 Kitchen - Cooking Area 70 Kitchen - Serving Area 70 Kitchen – Dishwashing 70

Laboratories 60 – 70

Laundry 30 Lecture Rooms Audience Area 30-50 Demonstration Area 60-75 Library 60 Lobby 30 Lounge 30 Mechanical/Electrical Room 10 – 20 Music Room Simple Scores 60 Advance Scores 60-75 Offices 50-60 Parking Lot 2, or 5:1 Restroom 30 Shops (Regular) 40-50 Shops (Woodwork) 50-75 Study Halls 30-50 Swimming Pool 50 Teachers Lounge 30 Typing Room 70




Workroom 25 Stadium Lighting

It is the responsibility of the electrical contractor to provide a mapping in each poles which lights have been change the ballast and bulbs. Provide the type of ballast, bulb, fuse, contactor, relays with their manufactured catalog, voltages, amperage.

The mapping the light fixtures shall be provided to Electrical Construction Panelboards and Load Centers

Approved brand shall be hinged swing front covers with copper buss and lugs. NO ALUMINUM BUSS OR TINS PLATED SHALL BE ACCEPTED. Each panelboard and load center must have a type written directory card hard paper on the panel doorframe under a clear plastic cover. Spares and spaces shall be written with erasable pencil for future use. All circuit breakers, disconnects, junction boxes, receptacle boxes, receptacle back plates, either surface or recessed, and conduit must be plainly label and marked to indicate the branch circuit served. Panelboard should include fitting accessories if mounted on the wall either indoor or outdoor

All conduits feeding on top or below the panelboard shall be label of marked with circuit numbers. All phases, grounded conductors shall be label or marked with circuit numbers. All circuit conductors shall be install neat, order, and workmanlike manner. All panelboards, disconnecting means and other electrical equipment shall mounted on unistrut.

When feeding a new panel use a 40 amperes main breaker from the existing electrical panel. Main breaker must have a retainer installed to prevent loosening to the bus bar (NEC 408-16F). No load of any type shall be connected to an air condition panel or any panel controlled by a time clock.

Computer Panels

Computer panels must be used for computer circuit only, and no other circuit shall be connected to this panel. Equipment such as fax machine, copier machine, laminator machine, duplicator machine, etc. must be in a separate panel. Harmonic mitigating transformers shall be used to serve in administrative area, computer room and labs, server and other areas that are non-linear loads and provide 1.73 percent sized neutral on the secondary of the transformer. Install transient voltage surge suppression in all computer panels and critical loads.

Receptacles, Power Pole and Covers




All general purpose receptacles are to be rated 125-volt, 20-ampere receptacles hospital grade. The receptacle is to be heavy-duty, one piece brass strap and integral ground for added strength and safety. Computer receptacles shall be rated 125-volt, 20-ampere orange in color with isolated ground and nylon orange cover. Covers for general-purpose receptacle are to be Nylon, Ivory color. In the event of using of an industrial metal box, the receptacle cover will be of metal with two holes to retain the receptacle. Computers, servers and PDU circuit must have a separate neutral and ground for each circuit. The feeder and over current protection for PDU & servers must size accordingly to the load and future use. See: Article 250 for grounding from NEC The Berko electric heater shall be rated 30-ampere, 208/240 Volt receptacles with brushed stainless plates. The Air Condition Window Unit shall be rated 20-ampere, 208/240 Volt receptacles with ivory cover plates. There shall be no more than six duplex receptacles on a 20-ampere, 120-volt circuit on convenient or general purpose receptacles. All phases, neutral and ground must be on the same raceway. There shall be no more than four receptacles on a 20-ampere, 120-volt computer circuit unless the rating are different. Each phases, neutral and ground conductors must be on the same raceway and use No. 10 neutral.

Use 1900 boxes (4 inches x 4 inches x 2 1/8 inches depth) on any surface & recessed mounted receptacle and industrial cover for surface mount. No switch boxes are to be allowed.

Tele-power pole must be supported at the base with L-bracket as well as to the ceiling if open ceiling. All receptacles must be electrically bonded to the grounding wire as per Article 250 of the NEC. Switches

Single Pole, three-way, and four way switches are to be rated 20-ampere, 125-volt circuit or any other type switch used to control lighting. The switches shall be a Hospital Grade and not Commercial Grade. All switches must be electrically bonded to the grounding wire. Label or marked the cover plates with circuit numbers.

Transformers

All dry type transformers, fifteen (15) KVA and above, purchased by HISD shall be constructed and equipped as follows:




The winding of coils shall be without internal splice. The primary voltage adjustment shall consist of two (2) 2-1/2% Full Capacity Above Normal and four (4) 2-1/2% Full Capacity Below Normal, which will be formed by rolling the coil material completely outside the coil and back in again. The transformer must be constructed so that it has a front accessible wiring compartment with a sturdy terminal bar and be approved for both indoor and outdoor use. All transformers from fifteen (15) KVA through 30 KVA, inclusive, shall be both floor and wall mount types and will have all the hardware and accessories included making both mountings possible.

Transformer must be electrically bonded per Article 250 per the NEC. Transformer application:

a. General purpose transformer. No substitution shall be made

b. Use Mitigating transformer of computer applications. No substitution shall be made.

c. Terminal lugs must be copper. No aluminum lug shall be used.

d. Approved rain shield must be installed for outdoor application.

Transformers must have phase shield infront the termination terminals and neutral bar for connections.

Transformer Installation

Transformers must be mounted on the wall, building structure, ceiling, indoor or outdoor and also to the side of a transportable building. It must be rigidly supported by a unistrut (1 5/8” by 1 5/8 “) and all mechanical fittings unless request is made for an angle channel. Transformers must be installed on a poured concrete slab when installed outdoor with a re-mesh wire. It must have a minimum of 6 inches in height unless 12 inches is requested on flood plain. Transformers that are to be installed indoor must be must on a 4 inch concrete pad (pre-fab).

Wiring All wire shall be soft drawn, stranded, annealed copper, with conductivity not less than 98 percent that of pure copper and shall be properly marked as per NEC 310-11. All wire must




have the UL stamp and have a temperature rating conducive to the installation but in no case less than 75 degrees Celsius. No conductor will be smaller than No. 12 AWG unless used as control wire. Solid wire is acceptable only with special permission from the Electrical Construction and Facility Services Department. All wire used by the Contractor on HISD property shall be copper. Aluminum wire is not acceptable, except for aerial in which case a multiplex aluminum aerial with steel core messenger wires (ACSR) is permissible. The wire insulation color shall be continuous color for the entire length. Do not used tape for marking. Switch Disconnects All switch disconnects shall be rated general duty for general used and heavy duty for horsepower rating. All disconnects shall be rated NEMA -1 for indoor used only, NEMA 3R for outdoor only and NEMA 4X for special application. All switch disconnects are rated from 30 amps to 1200 amps, either 240 volt or 600 volts AC of their application. The type of fuses used are LPS-RK, LPN-RK, FRS-R, FRN-R, LPJ, RK1, RKS, KRP-C, LP-CC, JJS, JJN, KTU, KLU, KTK-R, FNQ-R, JKS, KTS-r, KTN-R, and DLN-R

XIII. Portable, Modular, Building and Roof Installation

Utility poles shall be 30 feet in length, Class 3 pole and shall be spaced to least a 75 feet maximum distance. These poles shall be placed in the ground with a minimum of 6 feet in depth and use polyset compound to strength the pole. The electrical contractor shall install a guy wire to prevent the pole from leaning. If guy is needed, the wire shall be 3/8" stranded, high strength grade. The anchor shall be Chance Company Cat. No. 816 or approved equal. The eye hook shall be of the type manufactured by the Chance Company or approved equal and be of sufficient length (Lag Bolt types are not acceptable). These materials are to be assembled by at least two U-bolts on each end of the guy. All guy materials are to be hot dipped galvanized and assembled with the wire stretched tight. The guy wire is to be covered by a safety yellow hard plastic guard. All aerials wiring from one building to another must maintain at least a minimum height of 12 feet 0 inches except driveway must at least a minimum of 18 feet - 0 inches above the ground. However it is expected that when the aerial lines are attached to the Class 3 poles with a drive hook, the dive hook is to be attached within 12 inches below on top of the pole.




The electrical contractor must obtain the minimum clearances required by the current edition of the National Electrical Code, NFPA 70 and Local Electrical Codes, but, in no case shall the clearance of an aerial be less than 12 feet 0 inches above ground level, including drip loop. The aerial wire is to be anchored to the poles and buildings using a drive hook, porcelain product no. PP1020 or equal and wedge grip clamps, porcelain products no. PP1062 or approved equal, leaving approximately 8 inches slacks at each location. The connection of aluminum and copper wires are to be made using tin plated connectors, which have separators. Connectors should be Brundy KSU; Dossert DSNS and Blackburn HPS or equivalent types complete with spacers for electrolysis elimination. The connection should be of proper size for conductors being connected. If the manufacturer recommends the use of connection compound (Burndy Penatrox A) then the manufacturer's recommendation is to be followed.

If conduit runs across the roof to a distance of 100 feet or more, a pull box must be installed. The conduit must be supported with a 4 “ x 6 “ x 12” treated wood and 13/16” x 1 5/ 8 unistrut on top of the treated wood and spaces at least 6 feet interval. Use only Rigid Conduit.The transformer, disconnect, and electrical panel must be install on the outside wall of the building. This equipment must be supported rigidly with a 1 5/ 8” x 1 5/ 8” unistrut using a lug bolt and must penetrate to the main frame stud or the metal frame of the building. In every three - double classroom portable buildings, install a 150 ampere main breaker, 1/0 THWN copper wire to supply 3 -30 kVA transformers, 480 primary; 120/208 volt 3-phase 4-wire secondary. In every three – double classroom modular buildings, install a 225 ampere main breaker, 4/0 THWN copper wire to supply 3 – 50 kVA transformers, 480 primary; 120/208 volt 3-phase 4-wire secondary. A single classroom and restroom building must use a 15 kVA transformer, 480 primary; 120/208 volt 3-phase 4-wire secondary

XIV. Electric Hand Dryers, Theatrical Stage Lighting, and LED Marquees An electric hand dryer has to be an automatic type not a push button type. Install a dedicated 20 ampere, 120 volt circuit to each electric hand dryer.

Theatrical Stage Lighting, Dimming and Control lighting has to be design and proper layout by an engineer or lighting designer (L.C.). Drawings: The lighting design must be in UIL compliant.




The owner shall be supplied with two sets of “as-built” drawings. Two operations and maintenance manuals, covering all major items installed. The dimming manufacturer shall provide a (2) two year warranty on the entire lighting control system from date of acceptance. Power to theatrical and dimming system must be in compliance based on the National Electrical Code. A LED marquee has to comply with HISD specifications and must have at least three dedicated circuit install; one for the header, one for the LED, and one for service maintenance. XV. Acceptable Manufacturers: Do not substitute any materials without written approval. Use USA made or approved equal. Ballast: Advance Transformer Co. Osram Sylvania, General Electric, Universal, with 7 years warranty Bus Duct: Cutler Hammer, General Electric, Siemens and Square D Cabinets and Enclosures: Hoffman, Raco, Steel City, Appleton, Bridgeport, Milbank Contactors: Allen Bradley, Cutler Hammer, General Electric, Siemens and Square D Conduit , Fittings and Fuses: Raco, Steel City, Appleton, Bridgeport, T&B, Allied, Wheatland, Penn-Union, 3M, Ideal, ILsco, Regal, Metallic, Dottie, Bussman, Gould Shawmut General Purpose Transformers: Cutler Hammer, Square D, Hevi-Duty, Acme

Generators and Switches – Automatic Transfer and Isolation: Onan, Kohler, KatoLight,

Asco,

Grounding: Copperweld, Calweld, Burndy, Bridgeport, T&B, Appleton Electric Hand Dryer: Electric Aire, World Harmonic Filter: Harmonic Limited Harmonic Mitigating Transformers: Olsun, Power Quality, Square D

Lighting: Lamps – General Electric, Osram Sylvania, North American Philips – 3 years warranty

Luminaires (Fixtures): Kenall, Lithonia, Litholier, Hubbell. Cooper




Metering: Cutler Hammer, General Electric, Siemens and Square D Motor Control Centers: Cutler Hammer, General Electric, Siemens, Square D

Overcurrent Protective Devices – Circuit Breakers and Fuses: Cutler Hammer, General Electric, Siemens and Square D, Bussman

Panelboards – Branch Circuit and Distribution: Cutler Hammr, General Electric, Siemens and Square D

Power Factor Correction: Cutler Hammer, General Electric, Siemens and Square D

Safety Switches: Cutler Hammer, General Electric, Siemens and Square D Service Entrance – Switchboard: Cutler Hammer, General Electric, Siemens & Square D Stage Lighting: ETC, Electronic Theatre Controls Inc., 2 year warranty Transformer: Acme, Hevi-Duty, Olsun, Square-D, Hammond Power Surge Suppression: General Electric, Cutler Hammer, Square D, and Oslyn Uninterruptible Power Supply Systems: Best Power, Power Ware Wiring Devices: Leviton, Hubbell, Pass and Seymour


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