November 5-7, 2105, San Diego, CA

National Fire Protection Association 1 Batterymarch Park, Quincy, MA 02169-7471 Phone: 617-770-3000 • Fax: 617-770-0700 • www.nfpa.org

NEC Code-Making Panel 15

Second Draft Meeting Agenda

November 5-7, 2015

San Diego, CA

Item No. Subject 15-11 -1 Call to Order 15-11-2 Introduction of Members and Guests 15-11-3 Approval of A2016 First Draft Meeting Minutes 15-11-4 Review of Meeting Procedures and Revision Schedule 15-11-5 Task Group Reports 15-11-6 Process Public Comments and Develop Second Revisions 15-11-7 Fire Protection Research Foundation Requests 15-11-8 Old Business 15-11-9 New Business 15-11-10 Adjournment

Public Comment No. 1063 Global Input

Public Comment No. 1175 Section No. 517.2, Patient Care Space.




Public Comment No. 63 Section No. 517.13


Public Comment No. 1656 Section No. 517.13(B)(1)




Public Comment No. 62 Section No. 517.16(B)





Public Comment No. 1483 Section No. 517.17(A)



Public Comment No. 328 Section No. 517.18(C)

Public Comment No. 1486 Sections 517.19, 517.19





Public Comment No. 1705 Section No. 517.31(B) [Excluding any Sub‐Section

Public Comment No. 675 Section No. 517.31(C)(3)




Public Comment No. 1817 Section No. 517.35 [Excluding any Sub‐Sections]





Public Comment No. 1268 Section No. 517.61(A)(2)

Public Comment No. 1272 Section No. 517.63(E)

Public Comment No. 1818 Section No. 517.71(C)

Public Comment No. 1820 Section No. 520, Part IV.

Public Comment No. 1819 520.2, Adapter







Public Comment No. 806 Section No. 525.2, Operator

PC No. 807 Section 525.2, Portable Structures





10/6/2015 National Fire Protection Association Report

http://submittals.nfpa.org/TerraViewWeb/FormLaunch?id=/TerraView/Content/702014.ditamap/2/C1443033590366.xml&viewmode=nfpa/xslt/nfpaviewmode.xsl 2/6

Public Comment No. 1063NFPA 702015 [ Global Input ]

Article 100 Definitions

Voltage, Nominal…..Informational Note No. 3: Certain 48volt DC battery units have a charging float voltageup to 58 volts. In DC applications 60 volts is used to cover the entire range of floatvoltages.Article 110110.27 Guarding of Live Part (A) Live Parts Guarded Against Accidental Contact. Except as elsewhere required orpermitted by this Code, live parts of electrical equipment operating at 50 volts AC/60 voltsDC or more shall be guarded against accidental contact by approved enclosures or by any ofthe following means:Article 200 Use and Identification of Grounded Conductors200.7(B) Circuits of Less Than 50 Volts AC. A conductor with white or gray color insulation orthree continuous white stripes or having a marking of white or gray at the termination forcircuits of less than 50 volts AC shall be required to be grounded only as required by250.20(A).C) Circuits of 50 Volts AC or More. The use of insulation that is white or gray or that hasthree continuous white or gray stripes for other than a grounded conductor for circuits of 50volts AC or more shall be permitted only as in (1) and (2).Article 215 Feeders215.12(C)(2) Feeders Supplied from DirectCurrent Systems. Where a feeder is supplied from a dc system operating at more than 50 60 volts, eachungrounded conductor of 4 AWG or larger shall be identi?ed by polarity at alltermination, connection, and splice points by marking tape, tagging, or other approvedmeans; each ungrounded conductor of 6 AWG or smaller shall be identi?ed by polarityat all termination, connection, and splice points in compliance with 215.12(C)(2)(a) and(b). The identi?cation methods utilized for conductors originating within each feederpanelboard or similar feeder distribution equipment shall be documented in a mannerthat is readily available or shall be permanently posted at each feeder panelboard orsimilar feeder distribution equipment.Article 430 Motors, Motor Circuits, and Controllers430.232 Where Required. Exposed live parts of motors and controllers operating at 50 voltsDC or more between terminals shall be guarded against accidental contact by enclosure or bylocation as follows:430.233 Guards for Attendants. Where live parts of motors or controllers operating at over 50volts AC to ground are guarded against accidental contact only by location as specified in430.232, and where adjustment or other attendance may be necessary during the operation ofthe apparatus, suitable insulating mats or platforms shall be provided so that the attendantcannot readily touch live parts unless standing on the mats or platforms.Article 445 Generators445.14 Protection of Live Parts. Live parts of generators operated at more than 50 voltsAC/60 volts DC to ground shall not be exposed to accidental contact where accessible tounquali?ed persons.Article 460 Capacitors



460.6 (A) Time of Discharge. The residual voltage of a capacitor shall be reduced to 50 voltsDC , nominal, or less within 1 minute after the capacitor is disconnected from the source ofsupply.460.28(A) Means for Discharge. A means shall be provided to reduce the residual voltage ofa capacitor to 50 volts DC or less within 5 minutes after the capacitor is disconnected fromthe source of supply.Article 480 Storage Batteries480.5 Overcurrent Protection for Prime Movers. Overcurrent protection shall not be requiredfor conductors from a battery with a nominal voltage of 60 volts DC or less if the batteryprovides power for starting, ignition, or control of prime movers. Section 300.3 shallnot apply to these conductors.480.6 DC Disconnect Methods. (A) Disconnecting Means. A disconnecting means shall beprovided for all ungrounded conductors derived from a stationary battery system with anominal voltage over 60 volts DC. A disconnecting means shall be readily accessibleand located within sight of the battery system.

Article 522 Control Systems for Permanent Amusement Attractions522.25 Ungrounded Control Circuits. Separately derived ac and 2wire dc circuits andsystems 50 volts AC/60 volts DC or greater shall be permitted to be ungrounded, providedthat all the following conditions are met:Article 625625.18 Interlock. Electric vehicle supply equipment shall be provided with an interlockthat deenergizes the electric vehicle connector whenever the electrical connector isuncoupled from the electric vehicle. An interlock shall not be required for portablecordandplugconnected electric vehicle supply equipment intended for connection toreceptacle outlets rated at 125 volts, single phase, 15 and 20 amperes. An interlockshall not be required for dc supplies less than 50 60 volts dc.625.19 Automatic DeEnergization of Cable. The electric vehicle supply equipment orthe cableconnector combination of the equipment shall be provided with an automaticmeans to deenergize the cable conductors and electric vehicle connector uponexposure to strain that could result in either cable rupture or separation of the cablefrom the electric connector and exposure of live parts. Automatic means to deenergize the cable conductors and electric vehicle connector shall not be required forportable cordandplugconnected electric vehicle supply equipment intended forconnection to receptacle outlets rated at 125 volts, single phase, 15 and 20 amperes.An interlock shall not be required for dc supplies less than 50 60 volts dc.625.44 Electric Vehicle Supply Equipment Connection.Electric vehicle supply equipment shall be permitted to be cord and plugconnected to thepremises wiring system in accordance with one of the following:(A) Connections to 125Volt, SinglePhase, 15 and 20Ampere Receptacle Outlets. Electricvehicle supply equipment intended for connection to nonlocking, 2pole,3wire groundingtypereceptacle outlets rated at 125 V, single phase, 15 and 20 amperes or from a supply of lessthan 50 60 volts dc.(4) Supply Circuits. The supply circuit to the mechanical ventilation equipment shall beelectrically interlocked with the electric vehicle supply equipment and shall remainenergized during the entire electric vehicle charging cycle. Electric vehicle supplyequipment shall be marked in accordance with625.15. Electric vehicle supplyequipment receptacles rated at 125 volts, single phase, 15 and 20 amperes shall bemarked in accordance with 625.15 and shall be switched, and the mechanicalventilation system shall be electrically interlocked through the switch supply power tothe receptacle. Electric vehicle supply equipment supplied from less than 50 60 volts



dc shall be marked in accordance with 625.15(C) and shall be switched, and themechanical ventilation system shall be electrically interlocked through the switchsupply power to the electric vehicle supply equipment.Article 669 Electroplating669.6 Wiring Methods. Conductors connecting the electrolyte tank equipment to theconversion equipment shall be in accordance with 669.6(A) and (B).(A) Systems Not Exceeding 50 60 Volts Direct Current. Insulated conductors shall bepermitted to be run without insulated support, provided they are protected from physicaldamage. Bare copper or aluminum conductors shall be permitted where supported oninsulators.(B) Systems Exceeding 50 60 Volts Direct Current. Insulated conductors shall bepermitted to be run on insulated supports, provided they are protected from physicaldamage. Bare copper or aluminum conductors shall be permitted where supported oninsulators and guarded against accidental contact up to the point of termination inaccordance with 110.27.A rticle 720 Circuits and Equipment Operating at Less than 50 VoltsCircuits and Equipment Operating at Less Than 50 Volts AC/60 Volts DC.720.1 Scope. This article covers installations operating at less than 50 volts, alternatingcurrent, or 60 volts direct current or alternating current .720.11 Mechanical Execution of Work. Circuits operating at less than 50 volts ACor 60 volts DC shall be installed in a neat and workmanlike manner. Cables shall besupported by the building structure in such a manner that the cable will not bedamaged by normal building use.Type your content here ...

Statement of Problem and Substantiation for Public Comment

Over the past decade numerous code articles have been placed into the NEC as a result of the increased resurgence of DC systems. These systems, similar to their AC counterpart, have mandated code requirements that must be met when the system voltage exceeds a certain threshold. For years the system threshold for many of the requirements has been kept at the 50 volt level. While this is appropriate for AC systems, it can create confusion to the user of the document when applied to a 48 DC batteries during charging where a “float voltage” is common at 58 volts. The float voltage can vary significantly depending on battery chemistry, battery construction, and the actual ambient temperature. This voltage may be constant for the entire duration of the charge or can fluctuate. Some 48 volt DC systems stay above the 50 volt threshold for 99% of the time for applications such as telecommunications, UPS systems and emergency lighting.

This elevated voltage may create confusion since various AHJ’s might see 58 volts and mandate that a code rule must be followed since the 50 volt threshold has been increased. To resolve these issues a DC task group was formed to research the DC systems found in the NEC and to correlate the various DC topics that were being added to the NEC. The task group recommended the use of 60 volt DC throughout the code to eliminate the confusion that could arise from the elevated float voltage. The intent of the task group was to provide a consistent use of the voltage threshold within the NEC document.

For the 2017 NEC Revision Cycle, a task group was formed to correlate the use of the 50/60V threshold and provide public comments for the second draft. The task group members Larry Ayer (Chair), Bill Cantor, Donny Cook, Jim Dollard (CoChair), John Kovacik (DC Task Group Chair), Ernie Gallo, Vince Saporita, and Jim White provided input and guidance for these recommendations.

To correlate the use of 50 volts for AC systems and 60 volts for DC systems, the recommended NEC changes are based on the following:



1. Where a code section refers to AC systems only and indicates 50 volts the acronym “AC” was added to provide clarity. 2. Where a code section refers to a requirement used only in a DC system at a 50 volt threshold, the voltage is revised to 60 volts and the term “DC” is added3. Where a code section indicates a 50 volt threshold, and the section is a requirement for both AC and DC systems, the text is revised as “50 volts AC/60 volts DC”.4. When a code section refers to DC systems, and the term “nominal” is used, it will be deleted since the voltage threshold is increased to 60 volts.5. A fine print note is being recommended in Article 100 below the definition for “Nominal Voltage” to provide additional information on float voltage.

NEC changes are being recommended for the following code sections:

1. *Add informational note after “Voltage, Nominal”. Informational note to read as follows:*

*Informational Note No. 3: Certain 48volt DC battery units use a charging float voltage up to 58 volts. In DC applications 60 volts is used to cover the entire range of float voltages.*

2. For section 110.27, “50 volts” is being changed to “50 volts AC/60 volts DC”. This will clarify the voltage threshold for AC and DC systems.

3. Section 200.7 (B) and (C) applies to conductor marking for AC systems only. “AC” is added after 50 volts to clarify that this requirement is only for AC systems.

4. Section 210.5(C)(2) was revised in the First draft that changed “50 volts” to “60 volts” to correlate with the new microgrid article. Revise section 215.12(C) from“50 volts” to “60 volts” to correlate with section 210.5(C)(2).

5. In section 445.14, revise “50 volts” to 50 volts AC/60 volts DC” to clarify that this requirement pertains to both AC and DC systems.

6. In sections 480.5 and 480.6 “50 volts” was changed to “60 volts” since these pertain to DC batteries and DC systems.

7. In section 522.25, “50 volts” is being changed to “50 volts AC / 60 volts DC” to clarify that this section pertains to both AC and DC systems and distinguishes between the two voltage systems and thresholds.

8. Article 625, Electrical Vehicle Charging System. Revise the text from “50 volts” to“60 volts” since these are DC systems.

9. Section 669.6(A) and (B) are DC systems. Revise the text from“50 volts” to “60 volts”

10. Section 690.71 (B) is a DC system with a threshold of 50 volts. Revise the text from “50 volts” to “60 volts DC”.

11. Article 720 Circuits and Equipment Operating at Less Than 50 Volts covers both AC and DC systems. To correlate the Title has been changed to “50 Volts AC/60 Volts DC”. The Scope 720.1 and section 720.11 have been modified to clarify that this Article applies to both systems with the corresponding voltage.

Related ItemPublic Input No. 3681NFPA 702014 [Global Input]

Submitter Information Verification

Submitter Full Name:Lawrence Ayer

Public Comment No. 1175-NFPA 70-2015 [ Definition: Patient Care Space. ]

Patient Care Space.

Any space ofa of a health care facility wherein patients are intended to be examined or treated. [99:3.3.127]

Basic Care (Category 3) Space.

Space in which failure of equipment or a system is not likely to cause injury to the patients, staff, or visitors but can causepatient discomfort. [99:3.3.127.3]

General Care (Category 2) Space.

Space in which failure of equipment or a system is likely to cause minor injury to patients, staff, or visitors. [99:3.3.127.2]

Critical Care (Category 1) Space.

Space in which failure of equipment or a system is likely to cause major injury or death of patients, staff, or visitors.[99:3.3.127.1]

Support (Category 4) Space.

Space in which failure of equipment or a system is not likely to have a physical impact on patient care. [99:3.3.127.4]

Informational Note No. 1: The governing body of the facility designates patient care space in accordance with the type ofpatient care anticipated and with the definitions of the space classification. [99:1.3.4.1]

Informationaln Note No. 2: Business offices, corridors, lounges, day rooms, dining rooms, or similar areas typically arenot classified as patient care space. [99:A.3.3.127]

Informational Note No.3: Category 1 spaces, formerly known as critical care rooms (spaces), are typically where patientsare intended to be subjected to invasive procedures and connected to line operated, patient care–related appliances.Examples include, but are not limited to, special care patient rooms used for critical care, intensive care, and special caretreatment rooms such as angiography laboratories, cardiac catheterization laboratories, delivery rooms, operating rooms,post-anesthesia care units, trauma rooms, and other similar rooms. [99:A.3.3.127.1]

Informational Note No. 4: Category 2 spaces were formerly known as general care rooms (spaces). Examples include,but are not limited to, inpatient bedrooms, dialysis rooms, in vitro fertilization rooms, procedural rooms, and similarrooms. [99:A.3.3.127.2]

Informational Note No. 5: Category 3 spaces, formerly known as basic care rooms (spaces), aretypically where basicmedical or dental care, treatment, or examinations are performed. Examples include, but are not limited to, examinationor treatment rooms in clinics, medical and dental offices, nursing homes, and limited care facilities. [99:A.3.3.127.3]

Informational Note No. 6: Category 4 spaces were formerly known as support rooms (spaces). Examples of supportspaces include, but are not limited to, anesthesia work rooms, sterile supply, laboratories, morgues, waiting rooms, utilityrooms, and lounges. [99:A.3.3.127.4]

Additional Proposed Changes

File Name Description Approved

Klein01_Hart01_HEA-FUN_Agenda_item_NEC2017_CN155_FR4247_FR347.pdf

Request and details to NFPA HEA-FUN Committee for use of parenthetic transition of NFPA 99-extracted terms

reply_Klein01_Hart01_HEA-FUN_Agenda_item_NEC2017_CN155_FR4247_FR347.pdf

Consent of NFPA HEA-FUN Committee for use of parenthetic transition of NFPA 99-extracted terms

99_HEA-FUN_A2017_FDMinutes_8-15_annotated.pdfMinutes of NFPA 99 HEA-FUN Committee: Item 7 consideration and acceptance of extract transition approach in NFPA 70


Aside from the editorial correction of "ofa" to "of a", this Public Comment is responsive to NEC® Correlating Committee Note CN155 regarding 2017 NEC® First Revision FR4247 for Article 517 [and First Revision FR347 for Section 210.8(B)].

In accordance with 4.3.3 of the National Electrical Code® Style Manual and 2.3.2.11 of the Manual of Style for NFPA Technical Committee Documents regarding extracted materials, NFPA 99 Fundamentals Technical Committee, as the committee responsible for the source document, HAS CONSENTED to use parenthetic references between specific older and current NFPA 99 terminology during a transition to current NFPA 99 terminology in the National Electrical Code®.

This transitioning approach causes no change whatsoever in published NFPA 99-2015 or in NFPA 99-2018 in-development and assures correlation of NEC®/NFPA 70-2017 with NFPA 99-2015 and NFPA 99-2018 in-development.

National Fire Protection Association Report http://submittals.nfpa.org/TerraViewWeb/ContentFetcher?commentPara...

1059 of 2079 10/1/2015 11:02 AM

Please see the attached PDF file for details and for the requested action.

Related Public Comments for This Document

Related Comment Relationship

Public Comment No. 1173-NFPA 70-2015 [Section No. 210.8(B)(3)] use of terms defined in 517.2

Public Comment No. 1173-NFPA 70-2015 [Section No. 210.8(B)(3)]

Related Item

Correlating Committee Note No. 155-NFPA 70-2015 [Definition: Patient Care Space.]

First Revision No. 4217-NFPA 70-2015 [Section No. 520.48]

Public Input No. 2838-NFPA 70-2014 [Definition: Patient Care Space.]

Public Input No. 4488-NFPA 70-2014 [Definition: Patient Care Space.]

First Revision No. 347-NFPA 70-2015 [Section No. 210.8(B)]

Public Input No. 3239-NFPA 70-2014 [Section No. 210.8(B)]


Submitter Full Name: Brian Rock

Organization: Hubbell Incorporated

Street Address:

City:

State:

Zip:

Submittal Date: Thu Sep 24 07:57:56 EDT 2015


1060 of 2079 10/1/2015 11:02 AM

Committee Correspondence

Hubbell Incorporated 40 Waterview Drive Shelton, Connecticut 06484 USA +1 475 882-4655 +1 203 783-9407 [email protected]

July 9, 2015

Mr. David P. Klein, Chair, NFPA 99 Fundamentals Technical Committee

U.S. Department of Veterans Affairs 810 Vermont Avenue, NW, Suite 800 Mail Code: (10NA8) Washington, DC 20420

Mr. Jonathan R. Hart, Staff Liaison, NFPA 99 Fundamentals Technical Committee

National Fire Protection Association (NFPA) Post Office Box 9101 Quincy, Massachusetts 02269-9101

SUBJECT: Additional Agenda item for August 13 – 14, 2015 meeting of HEA-FUN: NEC® Correlating Committee Note CC155 regarding 2017 NEC® First Revisions FR4247 and FR347 transitioning to Category-numbered Patient Care Spaces in the NEC®

Dear Messrs. Klein and Hart,

Please add an Agenda item to the August 13th – 14th meeting of HEA-FUN to consider a transitioning approach to incorporating NFPA 99-2015 Category-numbered Patient Care Spaces in the National Electrical Code®. This matter is responsive to NEC® Correlating Committee Note CC155 regarding 2017 NEC® First Revision FR4247 (and First Revision FR347). In accordance with 4.3.3 of the National Electrical Code® Style Manual and 2.3.2.11 of the Manual of Style for NFPA Technical Committee Documents regarding extracted materials, this letter seeks consent of the Fundamentals Technical Committee as the committee responsible for the source document to use parenthetic references between specific older and current NFPA 99 terminology during a transition to current NFPA 99 terminology in the National Electrical Code®.

I write this letter as the Task Group Chair for NEC® Code-Making Panel CMP-15 that addressed the Public Inputs involved.

Background Information

NFPA 99-2015 in its definition of “Patient Care Space” [3.1.127] defines the subdivisions of that space as “Category 1 Space” [3.1.127.1], “Category 2 Space” [3.1.127.2], “Category 3 Space” [3.1.127.3], and “Category 4 Space” [3.1.127.4] that had previously been designated in earlier editions as “Critical Care Space (Room)”, “General Care Space (Room)”, “Basic Care Space (Room)”, and “Support Space (Room)”, respectively.

Public Inputs to the 2017 NEC® PI4488, PI4507, and PI2838 sought to correlate the older terms still used in NEC® Article 517 with the revised terms employed in NFPA 99-2015. It should be noted that the older terms are also used in the NEC® outside of Article 517.

®

Brian E. Rock Engineering Manager — Standards and Certification

David P. Klein & Jonathan R. Hart Page 2 July 9, 2015

NEC® Code-Making Panel CMP-15 accepted these Public Inputs by incorporation as First Revision FR4247. As such, the definition correlations are represented as and bracketed as extractions from NFPA 99-2015. NEC® Code-Making Panel CMP-2 met and acted upon FR347 prior to CMP-15’s acting upon those Public Inputs, so the revised terms were premature to be reflected in FR347 for NEC® 210.8(B)(3) Exception No. 2.

HEA-FUN Consent for NEC® Transition Sought

Unlike routine users of NFPA 99, many users of the National Electrical Code® are not versant with requirements of NFPA 99 and, consequently, are unfamiliar with the new categorization numbering of patient care space in NFPA 99. Requirements in the NEC® use these patient care space definitions not only to establish where requirements DO apply but also by exception where some requirements outside of NEC® Article 517 are NOT applicable. Furthermore, local jurisdictions adopt editions of the National Electrical Code® on very different schedules.

As a matter of readability and usability of the National Electrical Code® expressed in the Committee Statement Note to the NEC® Correlating Committee and NFPA Staff in First Revision FR4266 (intended to have been also included in the FR 4247 Committee Statement), NEC® Code-Making Panel CMP-15 wishes to implement the transition over several Code cycles. It was felt that such a transition is needed for NEC® users with infrequent usage of NFPA 99 to avoid confusion and misinterpretation. This proposed terminology transition is similar to the terminology transition that had previously occurred within the NEC® in going ffrom “fixture” to “luminaire”:

Prior to revision: “fixture”

Code cycle 1: “fixture (luminaire)”

Code cycle 2: “luminaire (fixture)”

Code cycle 3: “luminaire”

Accordingly, with HEA-FUN’s consent, what is sought is the following transition in the NEC®:

2014 NEC® (pre-revision)

2017 NEC® 2020 NEC® 2023 NEC® and after

“Critical Care Space” “Critical Care Space (Category 1 Space)”

“Category 1 Space (Critical Care Space)”

“Category 1 Space”

“General Care Space” “General Care Space (Category 2 Space)”

“Category 2 Space (General Care Space)”


“Basic Care Space” “Basic Care Space

(Category 3 Space)” “Category 3 Space

(Basic Care Space)” “Category 3 Space”

“Support Space” “Support Space

(Category 4 Space)” “Category 4 Space (Support Space)”


Please advise if the above transition in the NEC® has the consent of the HEA-FUN Technical Committee.

David P. Klein & Jonathan R. Hart Page 3 July 9, 2015

Best regards,

Brian E. Rock Hubbell Incorporated

Principal Member — NFPA 99 Electrical Systems Principal Member — NEC® Code Panel 15 Alternate Member — NEC® Code Panel 2

cc: Michael J. Johnston, NECA [Chair, NEC® Correlating Committee] Mark W. Earley, NFPA [Staff Liaison, NEC®] Kimberly L. Shea. NFPA [Recording Secretary, NEC® Correlating Committee] Lawrence E. Todd, Intertek [Chair, NEC® Code-Making Panel 15] Mark R. Hilbert, MR Hilbert Electrical Inspections & Training [Chair, NEC® Code-Making

Panel 2] Jason D’Antona, Thompson Consultants [Submitter, NEC® Public Inputs PI4488 and

PI4507] Gary A. Beckstrand, UEJATC [Submitter, NEC® Public Input PI2838]

Brian Rock <[email protected]>

Additional Agenda item for August 13 – 14, 2015 meeting of HEA-FUN:transitioning to NFPA 99's Category-numbered Patient Care Spaces in the NEC

Hart, Jonathan <[email protected]> Tue, Sep 22, 2015 at 9:48 AMTo: Brian Rock <[email protected]>Cc: David Klein <[email protected]>, "Johnston, Michael" <[email protected]>, "Earley, Mark"<[email protected]>, "Shea, Kimberly" <[email protected]>, Larry Todd <[email protected]>, Mark Hilbert<[email protected]>, Jason D'Antona <[email protected]>, Gary Beckstrand<[email protected]>, "Crowley, Michael" <[email protected]>

Hi Brian,

HEA‐FUN did address the issue. I inadvertently le this topic out of the HEA‐FUN mee ng minutes. They will berevised and reposted.

There we no objec ons from the commi ee.

Thank you for discovering this and bringing it to my a en on.

Jon

Jonathan R. Hart, P.E.

Senior Fire Protec on Engineer

Na onal Fire Protec on Associa on

1 Ba erymarch Park, Quincy, MA 02169‐7471

Phone: 617-984-7470 Email: [email protected]

From: Brian Rock [mailto:[email protected]]Sent: Sunday, September 20, 2015 12:59 PMTo: Hart, Jonathan <[email protected]>Cc: David Klein <[email protected]>; Johnston, Michael <[email protected]>; Earley, Mark<[email protected]>; Shea, Kimberly <[email protected]>; Larry Todd <[email protected]>; MarkHilbert <[email protected]>; Jason D'Antona <[email protected]>; Gary Beckstrand<[email protected]>; Crowley, Michael <[email protected]>Subject: Re: Addi onal Agenda item for August 13 – 14, 2015 mee ng of HEA‐FUN: transi oning to NFPA 99'sCategory‐numbered Pa ent Care Spaces in the NEC

Gmail - Additional Agenda item for August 13 – 14, 2015 meeting of HE... https://mail.google.com/mail/u/0/?ui=2&ik=b161dcf6b7&view=pt&searc...

1 of 3 9/24/2015 6:15 AM

Hi Jon

I just downloaded the Meeting Minutes for HEA-FUN and I did not see it covered under New Business. Was thismatter considered? This affects the Second Draft of 2017 NFPA 70 for CMP-15 and CMP-2, so it is essential that itbe addressed.

Thanks,

Brian

Brian E. RockEngineering Manager - Standards & CertificationHubbell Incorporated

Principal Member - NEC® Code Panel 15 (NEMA)Alternate Member - NEC® Code Panel 2 (NEMA)Principal Member - NFPA99 Health Care Electrical SystemsMember - UL Standard Technical PanelsMember - CSA Technical Subcommittees

e-mail: [email protected] [standards & codes development]e-mail: [email protected]: +1 475 882 4655fax: +1 203 783 9407mobile: +1 203 494 7258 (personal)post:Hubbell Incorporated40 Waterview DriveShelton, Connecticut 06484

"Electricity is really just organized lightning." -- George Carlin

*************************************************************

Please do NOT omit ".electrotechnical" in my G-Mail address;

that e-mail address without ".electrotechnical" is NOT me but

someone else (unknown) having the SAME name as me.

*************************************************************

On Thu, Jul 9, 2015 at 2:18 PM, Hart, Jonathan <[email protected]> wrote:

Thank you, Mr. Rock.

I am copying Michael Crowley, Chairman of the NFPA 99 Correla ng Commi ee (HEA‐AAC) on this response,so that he is aware of the request as well.

From: Brian Rock [mailto:[email protected]]Sent: Thursday, July 09, 2015 12:33 PMTo: David Klein; Hart, Jonathan


2 of 3 9/24/2015 6:15 AM

Cc: Johnston, Michael; Earley, Mark; Shea, Kimberly; Larry Todd; Mark Hilbert; Jason D'Antona; GaryBeckstrandSubject: Addi onal Agenda item for August 13 – 14, 2015 mee ng of HEA‐FUN: transi oning to NFPA 99'sCategory‐numbered Pa ent Care Spaces in the NEC

Dear Messrs. Klein and Hart,

Please add an Agenda item to the August 13th – 14th meeting of HEA-FUN to consider a transitioning approachto incorporating NFPA 99-2015 Category-numbered Patient Care Spaces in the National Electrical Code®. Thismatter is responsive to NEC® Correlating Committee Note CC155 regarding 2017 NEC® First RevisionFR4247 (and First Revision FR347). In accordance with 4.3.3 of the National Electrical Code® Style Manualand 2.3.2.11 of the Manual of Style for NFPA Technical Committee Documents regarding extracted materials,this letter seeks consent of the Fundamentals Technical Committee as the committee responsible for thesource document to use parenthetic references between specific older and current NFPA 99 terminology during atransition to current NFPA 99 terminology in the National Electrical Code®. This transitioning approach causes nochange whatsoever in published NFPA 99-2015 or in NFPA 99-2018 in-development.

Please see the attached PDF file for details and for the requested action.

I write this letter as the Task Group Chair for NEC® Code-Making Panel CMP-15 that addressed the NEC®Public Inputs involved.

I am out of the office on business travel off the North American continent this week, on business travel back onthe North American continent early next week, and returning to my office on Thursday PM, July 16th.

Best regards,

Brian E. RockEngineering Manager - Standards & CertificationHubbell Incorporated

Principal Member - NFPA99 Health Care Electrical SystemsPrincipal Member - NEC® Code Panel 15 (NEMA)Alternate Member - NEC® Code Panel 2 (NEMA)Member - UL Standard Technical PanelsMember - CSA Technical Subcommittees

e-mail: [email protected] [standards & codes development]phone: +1 475 882 4655fax: +1 203 783 9407mobile: +1 203 494 7258 (personal)post:Hubbell Incorporated40 Waterview DriveShelton, Connecticut 06484


3 of 3 9/24/2015 6:15 AM

MINUTES NFPA Technical Committee on Fundamentals (HEA-FUN)

August 13, 2015

First Draft Meeting

Sheraton Inner Harbor Hotel – Baltimore, MD

1. Call to Order. Committee Chair, David Klein, called the meeting to order at

8:00 am on Thursday August 13, 2015.

2. Attendance and Introductions: Attendance was taken and those present at

the meeting introduced themselves and stated who they represent on the

committee. Those who were present at the meeting are listed below:

Name Representing Klein, David – Chair US Department of Veterans Affairs

Abell, Bruce – Principal U.S. Army Corps of Engineers

Beebe, Chad – Principal ASHE Besel, Jeff – Principal Automatic Fire Alarm Association, Inc.

Burrill, Gordon – Principal Canadian Healthcare Engineering Society Crowley, Michael – Principal Jensen Hughes

Fertlitch, Carl – Principal Chubb Group of Insurance Companies

Kowalenko, Henry – Principal Illinois Department of Public Health Lathrop, James – Principal Koffel Associates, Inc.

Lipster, Stephen – Principal International Brotherhood of Electrical Workers

Martin, Bret – Principal Carolinas Healthcare Systems McNamara, Thomas – Principal North Shore LIJ Health System-Southside

Peterkin, James – Principal Heery International

Van Overmeiren, Frank – Principal

FP&C Consultants, Inc.

Dahozy, Roger – Alternate US Dept. of Health and Human Services/IHS

Mansfield, Michael – Alternate CNA Insurance Company

Scarlett, Kevin – Alternate Washington State Department of Health Hart, Jonathan – Staff Liaison NFPA

3. Chairman Comments: David Klein spoke to the agenda for the meeting

and provided opening comments.

4. Minutes Approval: The minutes of the HEA-FUN June 3, 2013 Second

Draft Meeting were approved as distributed in the Agenda Package.

5. Staff Liaison Presentation: Jon Hart give a staff presentation which

included general meeting procedures and a review of the Annual 2017

revision cycle.

6. Development of First Draft: The committee reviewed all 33 public inputs

(PI) and resolved them by either providing a committee statement or by

creating a first revision (FR) based on the PI. Other First Revisions were

also created. See the First Draft and First Draft Report for the official

committee actions.

7. New Business: The committee discussed a request from a task group of

NEC Code-Making Panel CMP-15 to consider a transitioning approach to

incorporating NFPA 99-2015 Category-numbered Patient Care Spaces in the

National Electrical Code®. The matter was in response to NEC Correlating

Committee Note CC155 regarding 2017 NEC® First Revision FR4247 (and

First Revision FR347). There were no objections made to this approach from

the HEA-FUN committee.

8. Next Meeting: The next meeting will be held in the June/July 2016

timeframe.

9. Meeting Adjourned: The meeting was adjourned at 12:00 pm on August

13, 2015.

brock

Highlight


Patient Category 1 Care Space.

Any space ofa health care facility wherein patients are intended to be examined or treated. [99:3.3.127]

Basic Care ( Category 3 ) Care Space.


General Care ( Category 2 ) Care Space.


Critical Care (Category 1) Catagory 1 Care Space.


Support ( Category 4 ) Support Space.




Informational Note No.3: Category 1 spaces, formerly known as critical care rooms (spaces), are typically where patientsare intended to be subjected to invasive procedures and connected to line operated, patient care–related appliances.Examples include, but are not limited to, special care patient rooms used for critical care, intensive care, and special caretreatment rooms such as angiography laboratories, cardiac catheterization laboratories, delivery rooms, operating rooms,post-anesthesia care units, trauma rooms, and other similar rooms. [99:A.3.3.127.1]





The terms "Critical, patient, basic, general" are not in the referenced text in 99. including this term would be confusing to the user. NFPA 99 has specifically moved away from using those terms because they do not adequately describe the space needed.



Public Comment No. 1470-NFPA 70-2015 [Section No. 517.18]

Related Item

Public Input No. 4247-NFPA 70-2014 [Annex A]


Submitter Full Name: CHAD BEEBE

Organization: ASHE AHA

Street Address:

City:

State:

Zip:

Submittal Date: Fri Sep 25 12:44:43 EDT 2015


1061 of 2079 10/1/2015 11:02 AM


Patient Care Space.

Any space ofa health care facility wherein patients are intended to be examined or treated. [99:3.3.127]







Support (Category 4) Space.




Informational Note No.3: Category 1 spaces, formerly known as critical care rooms (spaces), are typically wherepatients are intended to be subjected to invasive procedures and connected to line operated, patient care–relatedappliances. Examples include, but are not limited to, special care patient rooms used for critical care, intensive care, andspecial care treatment rooms such as angiography laboratories, cardiac catheterization laboratories, delivery rooms,operating rooms, post-anesthesia care units, trauma rooms, and other similar rooms. [99:A.3.3.127.1]





The Correlating Committee directs Code-Making Panel 15 to give further consideration to the comments expressed in voting on FR 4247. Extracted material must comply with 4.3.2.2 of NEC Style Manual. This action will be considered as a public comment. The preferred method for parenthetical text is to have the new term first with the old term in parenthesis.

Related Item

First Revision No. 4247-NFPA 70-2015 [Definition: Patient Care Space.]


Submitter Full Name: CC on NEC-AAC

Organization: NFPA

Street Address:

City:

State:

Zip:

Submittal Date: Tue Sep 29 09:40:34 EDT 2015


1062 of 2079 10/1/2015 11:02 AM


Patient Care Space.

Any space ofa health care facility wherein patients are intended to be examined or treated. [ 99: 3.3.127]

Informational Note No. 1: The governing body of the facility designates patient care space in accordance with thetype of patient care anticipated and with the definitions of the space classification. [ 99: 1.3.4.1]

Informationaln Note No. 2: Business offices, corridors, lounges, day rooms, dining rooms, or similar areas typicallyare not classified as patient care space. [ 99: A.3.3.127]


Space in which failure of equipment or a system is not likely to cause injury to the patients, staff, or visitors but can causepatient discomfort. [ 99: 3.3.127.3]

Informational Note: Category 3 spaces, formerly known as basic care rooms (spaces), aretypically where basicmedical or dental care, treatment, or examinations are performed. Examples include, but are not limited to, examinationor treatment rooms in clinics, medical and dental offices, nursing homes, and limited care facilities. [ 99: A.3.3.127.3]


Space in which failure of equipment or a system is likely to cause minor injury to patients, staff, or visitors. [ 99: 3.3.127.2]


Space in which failure of equipment or a system is likely to cause major injury or death of patients, staff, or visitors. [ 99:

Informational Note: Category 2 spaces were formerly known as general care rooms (spaces). Examples include,but are not limited to, inpatient bedrooms, dialysis rooms, in vitro fertilization rooms, procedural rooms, andsimilar rooms. [ 99: A. 3.3.127.

1

2 ]

Support Critical Care (Category 4 1 ) Space.

Space in which failure of equipment or a system is

not likely to have a physical impact on patient care. [ 99: 3.3.127.4]

Informational Note No. 1: The governing body of the facility designates patient care space in accordance with the type ofpatient care anticipated and with the definitions of the space classification. [ 99: 1.3.4.1]

Informationaln Note No. 2: Business offices, corridors, lounges, day rooms, dining rooms, or similar areas typically are notclassified as patient care space. [ 99: A.

likely to cause major injury or death of patients, staff, or visitors. [ 99: 3.3.127 .1 ]

Informational Note

No.3

: Category 1 spaces, formerly known as critical care rooms (spaces), are typically where patients are intendedto be subjected to invasive procedures and connected to line operated, patient care–related appliances.Examples include, but are not limited to, special care patient rooms used for critical care, intensive care, andspecial care treatment rooms such as angiography laboratories, cardiac catheterization laboratories, deliveryrooms, operating rooms, post-anesthesia care units, trauma rooms, and other similar rooms. [ 99: A.3.3.127.1]

Informational Note No. 4: Category 2 spaces were formerly known as general care rooms (spaces). Examples include,but are not limited to, inpatient bedrooms, dialysis rooms, in vitro fertilization rooms, procedural rooms, and similarrooms. [ 99: A.3.3.127.2]

Informational Note No. 5: Category 3 spaces, formerly known as basic care rooms (spaces), aretypically where basic medicalor dental care, treatment, or examinations are performed. Examples include, but are not limited to, examination or treatmentrooms in clinics, medical and dental offices, nursing homes, and limited care facilities. [ 99: A. Support (Category 4) Space.

Space in which failure of equipment or a system is not likely to have a physical impact on patient care. [ 99: 3.3.127. 3

4 ]

Informational Note No. 6 : Category 4 spaces were formerly known as support rooms (spaces). Examples ofsupport spaces include, but are not limited to, anesthesia work rooms, sterile supply, laboratories, morgues,waiting rooms, utility rooms, and lounges. [ 99: A.3.3.127.4]


Relocate Informational Notes.


1063 of 2079 10/1/2015 11:02 AM

Related Item

First Revision No. 4247-NFPA 70-2015 [Definition: Patient Care Space.]


Submitter Full Name: MIKE HOLT

Organization: MIKE HOLT ENTERPRISES INC

Street Address:

City:

State:

Zip:

Submittal Date: Sun Aug 30 15:56:57 EDT 2015


1064 of 2079 10/1/2015 11:02 AM

Public Comment No. 63-NFPA 70-2015 [ Section No. 517.13 ]

517.13 Grounding of Receptacles and Fixed Electrical Equipment in Patient Care Spaces.

Wiring in patient care spaces shall comply with 517.13(A) and (B).

(A) Wiring Methods.

All branch circuits serving patient care areas spaces shall be provided with an effective ground-fault current path by installationin a metal raceway system, or a cable having a metallic armor or sheath assembly. The metal raceway system, or metallic cablearmor, or sheath assembly shall itself qualify as an equipment grounding conductor in accordance with 250.118.

(B) Insulated Equipment Grounding Conductor Conductors and Insulated Equipment Bonding Jumpers .

(1) General.

The following shall be directly connected to an insulated copper equipment grounding conductor that is green clearly identifiedalong its entire length by green insulation and installed with the branch circuit conductors in the wiring methods as provided in517.13(A):

(1) The grounding terminals of all receptacles other than isolated ground receptacles

(2) Where receptacles are mounted in metal receptacle outlet boxes are used, , metal device boxes, or metal enclosures,the performance of the connection between the receptacle grounding terminal and the metal box or enclosure shall beequivalent to the performance provided by copper wire sized in accordance with 250.146 and Table 250.122 but nosmaller than 12 AWG. [ 99: 6.3.2.2.2.4]

(3) All non–current-carrying conductive surfaces of fixed electrical equipment likely to become energized that are subject topersonal contact, operating at over 100 volts

Exception No. 1: An For other than isolated ground receptacles, an insulated equipment bonding jumper that directlyconnects to the equipment grounding conductor is permitted to connect the box and receptacle(s) to the equipment groundingconductor. Isolated ground receptacles shall be connected in accordance with 517.16.

Exception No. 2: Metal faceplates shall be permitted to be connected to the equipment grounding conductor by means of ametal mounting screw(s) securing the faceplate to a grounded outlet box or grounded wiring device.

Exception No. 3: Luminaires more than 2.3 m (7 1⁄2 ft) above the floor and switches located outside of the patient care vicinityshall be permitted to be connected to an equipment grounding return path complying with 517.13(A) and (B).

(2) Sizing.

Equipment grounding conductors and equipment bonding jumpers shall be sized in accordance with 250.122.


The revision to 517.13(B)(1)(1) to exclude isolated ground receptacles is essential to correlate with 517.16(B) as modified by FR4260 and to avoid defeating the isolated grounding of an IG receptacle by miswiring per the 517.16 reference to 517.13(B).

The term "metal receptacle boxes" in revised 517.16(B)(1)(2) is inconsistent with the term "metal outlet boxes" or "metal device boxes" used in the National Electrical Code® NFPA 70 (e.g., "Article 314 Outlet, Device, Pull, and Junction Boxes ...") and the Safety Standard UL 514A under which such metal outlet boxes (for receptacles) are evaluated. In NEC® 517.13(B)(1)(2), a Public Input to use extracted wording from NFPA 99-2015 6.3.2.2.2.4 introduces inconsistency that degrades needlessly the readability of the NEC®.

Furthermore, receptacles are not only flush- or-surface-mounted in metal outlet boxes or metal device boxes, but can be panel-mounted in metal enclosures that present the same safety concerns. NEC® 517.13(B)(1) EXPLICITLY recognizes receptacles mounted in metal enclosures and imposes the same grounding requirements as for outlet and device boxes. A Public Input has also been submitted to correct NFPA 99-2018, 6.3.2.2.2.4, identically.

As 517.13(B)(1)(2) was revised in FR4261, it is ambiguous whether 517.13(B)(1)(2) permits equipment bonding jumpers to be sized as copper 12 AWG for 60A, 100A, and 200A receptacles rather than to be unequivocally equivalent to copper 10 AWG, 8 AWG, or 6 AWG, respectively, in accordance with the minimum sizes of NEC® 250.146 and Table 250.122.

Since 517.16(B) encompasses equipment bonding jumpers in addition to equipment grounding conductors, equipment bonding jumpers should be reflected in the subsection title. Because sizing of the equipment boding jumper is addressed in revised 517.16(B)(1), sizing of equipment boding jumpers should not be reflected redundantly in 517.16(B)(2). As presently revised, there is a correlation issue because the two requirements conflict for 15 A receptacles.

The grounding conductor’s insulation, not the copper conductor itself, should be green.

Editorial: Use term “patient care spaces” in place of “patient care areas” for consistency throughout NEC® Article 517 and with NFPA 99.

Related Item


1065 of 2079 10/1/2015 11:02 AM



Submitter Full Name: BRIAN ROCK

Organization: HUBBELL INCORPORATED

Street Address:

City:

State:

Zip:

Submittal Date: Thu Jun 25 15:47:44 EDT 2015


1066 of 2079 10/1/2015 11:02 AM


517.13 Grounding of Receptacles and Fixed Electrical Equipment in Patient Care Spaces.

Wiring in patient care spaces shall comply with 517.13(A) and (B).

(A) Wiring Methods.

All branch circuits serving patient care areas shall be provided with an effective ground-fault current path by installation in ametal raceway system, or a cable having a metallic armor or sheath assembly. The metal raceway system, or metallic cablearmor, or sheath assembly shall itself qualify as an equipment grounding conductor in accordance with 250.118.

(B) Insulated Equipment Grounding Conductor and Insulated Equipment Bonding Jumper .

(1) General.

The following shall be directly connected to an insulated copper equipment grounding conductor that is clearly identified usinggreen insulation along its entire length and installed with the branch circuit conductors in the wiring methods as provided in517.13(A):

(1) The grounding terminals of all receptacles

Where metal receptacle boxes are used,

(2) other than isolated ground receptacles

(3) Where receptacles are mounted in metal outlet boxes, metal device boxes, or metal enclosures, the performance of theconnection between the receptacle grounding terminal and the metal box or enclosure shall be equivalent to theperformance provided by copper wire sized in accordance with 250.146 and Table 250.122 but no smaller than 12 AWG.[ 99: 6.3.2.2.2.4]


Exception No. 1: An insulated equipment bonding jumper that directly connects to the equipment grounding conductor ispermitted to connect the box and receptacle(s) to the equipment grounding conductor.


Exception No. 3: Luminaires more than 2.3 m (7 1⁄2 ft) above the floor and switches located outside of the patient care vicinityshall be permitted to be connected to an equipment grounding return path complying with 517.13(A) and (B).

(2) Sizing.

Equipment grounding conductors and equipment bonding jumpers shall conductors shall be sized in accordance with 250.122.


The revision to 517.13(B)(1)(1) to exclude isolated ground receptacles is essential to correlate with 517.16(B) as modified by FR4260 and to avoid defeating the isolated grounding of an IG receptacle by miswiring per 517.16 reference to 517.13(B).The term "metal receptacle boxes" in revised 517.16(B)(1) (2) is inconsistent with the term "metal outlet boxes" or "metal device boxes" used in the National Electrical Code® NFPA 70 (e.g., "Article 314 Outlet, Device, Pull, and Junction Boxes ...") and the Safety Standard UL 514A under which such metal outlet boxes (for receptacles) are evaluated. In NEC® 517.13(B)(1)(2), a Public Input to use extracted wording from NFPA 99-2015 6.3.2.2.2.4 introduces inconsistency that degrades needlessly the readability of the NEC®.

Furthermore, receptacles are not only flush- or-surface-mounted in metal outlet boxes or metal device boxes, but can be panel-mounted in metal enclosures that present the same safety concerns. NEC® 517.13(B)(1) EXPLICITLY recognizes receptacles mounted in metal enclosures and imposes the same grounding requirements as for outlet and device boxes. NFPA 99 needs to be similarly revised.

As 517.13(B)(1)(2) was revised in FR4261, it is ambiguous whether 517.13(B)(1)(2) permits equipment bonding jumpers to be sized as copper 12 AWG for 60A, 100A, and 200A receptacles rather than to be unequivocally equivalent to copper 10 AWG, 8 AWG, or 6 AWG, respectively, in accordance with the minimum sizes of NEC® 250.146 and Table 250.122.

Since 517.16(B) encompasses equipment bonding jumpers in addition to equipment grounding conductors, equipment bonding jumpers should be reflected in the subsection title. Because sizing of the equipment boding jumper is addressed in revised 517.16(B)(1), sizing of equipment boding jumpers should not be reflected redundantly in 517.16(B)(2). As presently revised, the two requirements conflict for 15 A receptacles.

The grounding conductor’s insulation, not the copper conductor itself, should be green.

Related Item




1067 of 2079 10/1/2015 11:02 AM

Submitter Full Name: VINCE BACLAWSKI

Organization: NEMA

Street Address:

City:

State:

Zip:

Submittal Date: Mon Sep 21 12:53:38 EDT 2015


1068 of 2079 10/1/2015 11:02 AM

Public Comment No. 1656-NFPA 70-2015 [ Section No. 517.13(B)(1) ]

(1) General.

The following shall be directly connected to an insulated copper equipment grounding conductor that is green along its entirelength and installed with the branch circuit conductors in the wiring methods as provided in 517.13(A):


(2) Where metal receptacle boxes are used, the performance of the connection between the receptacle grounding terminaland the metal box shall be equivalent to the performance provided by copper wire no smaller than 12 AWG.[ 99: 6.3.2.2.2.4] Metal boxes and enclosures containing receptacles




Exception No. 3: Luminaires more than 2.3 m (7 1⁄2 ft) above the floor and switches located outside of the patient care vicinityshall be permitted to be connected to an equipment grounding return path complying with 517.13(A) and or (B).


Item two is revised to create a coherent statement.Exception two is revised to allow either (A) or (B) to be used, which is what the original proposal sought. As written by the panel, the exception isn't excepting anything out, as it just states that I must comply with (A) AND (B), instead of (A) OR (B).

Related Item



Submitter Full Name: RYAN JACKSON

Organization: RYAN JACKSON

Street Address:

City:

State:

Zip:



1069 of 2079 10/1/2015 11:02 AM


(1) General.

The following shall be directly connected to an insulated copper equipment grounding conductor that is green along its entirelength and installed with the branch circuit conductors in the wiring methods as provided in 517.13(A):


(2) Where metal receptacle boxes are used, Metal boxes and enclosures containing receptacles, unless the performance ofthe connection between the receptacle grounding terminal and the metal box shall be equivalent is equivalent to theperformance provided by copper wire no smaller than 12 AWG. [99:6.3.2.2.2.4]




Exception No. 3: Luminaires more than 2.3 m (7 1⁄2 ft) above the floor and switches located outside of the patient care vicinityshall be permitted to be connected to an equipment grounding return path complying with 517.13(A) and or (B).


In 517.13 (B)(1), the three items listed below 517.13 (B)(1) are list items that should follow, the qualifier of the list "The following shall be directly connected.....". As written, (2) does not make sense as a list item. The language used in this proposed revision continues a consistent list. An alternative could be to keep the original 517.13 (B)(1)(2) list item, as written in the 2014 edition, and include an exception as follows: Exception to (2): Metal boxes or enclosures that contains receptacles shall not be required to be directly connected to an insulated equipment ground conductor if the performance of the connection between the receptacle grounding terminal and the metal box or enclosure is equivalent to the performance provided by a copper wire no smaller than #12 AWG.

In 517.13 (B) Exception No. 3: If the exception was intended to require one method of grounding, vs. both, then the exception should be "517.13 (A) OR (B)"

Related Item



Submitter Full Name: DANIEL CARON

Organization: BARD RAO + ATHANAS CONSULTING

Street Address:

City:

State:

Zip:

Submittal Date: Mon Aug 24 14:31:41 EDT 2015


1070 of 2079 10/1/2015 11:02 AM


517.16 Use of Isolated Ground Grounding Receptacles.

(A)

An isolated grounding receptacle shall not be installed within a patient care vicinity. [99:6.3.2.2.7.1(B)]

(B)

Isolated grounding receptacle(s) used outside of a patient care vicinity shall not defeat the purposes of the safety features ofthe grounding systems detailed in 517.13.

(1)

Isolated grounding receptacles installed in branch circuits for patient care spaces shall be connected to an insulated equipmentgrounding conductor in accordance with 250.146(D) in addition to the two equipment grounding conductor paths required in517.13(A) and (B).

(2)

The equipment grounding conductor installed for isolated grounding receptacles in patient care areas shall be clearly identifiedusing green insulation with one or more yellow stripes along its entire length.

Informational Note No. 1: This type of installation is typically used where a reduction of electrical noise (electromagneticinterference) is necessary, and parallel grounding paths are to be avoided.

Informational Note No. 2: Care should be taken in specifying a system containing isolated ground receptacles, becausethe grounding impedance is controlled only by the grounding wires and does not benefit from any conduit or buildingstructure in parallel with the grounding path. [99:A.6.3.2.2.7.1 ]


The word Grounding is used in the body of the text (Not Grounded)

Related Item



Submitter Full Name: David Dagenais

Organization: Wentworth-Douglass Hospital

Street Address:

City:

State:

Zip:



1071 of 2079 10/1/2015 11:02 AM


517.16 Use of Isolated Ground Receptacles.

(A)

An isolated grounding receptacle shall not be installed within a patient care vicinity. [99:6.3.2.2.7.1(B)]

(B)

Isolated grounding receptacle(s) used outside of a patient care vicinity shall not defeat the purposes of the safety features ofthe grounding systems detailed in 517.13.

(1)

Isolated grounding receptacles installed in branch circuits for patient care spaces shall be connected to an insulated equipmentgrounding conductor in accordance with 250.146(D) in addition to the two equipment grounding conductor paths required in517.13(A) and (B).

(2)





The Correlating Committee directs that further consideration be given to the comments expressed in voting on FR 4260 and to correlate with the use of the term “isolated ground receptacle” in 250.146 and 406.3(D).

Related Item




Organization: NFPA

Street Address:

City:

State:

Zip:



1072 of 2079 10/1/2015 11:02 AM

Public Comment No. 62-NFPA 70-2015 [ Section No. 517.16(B) ]

(B)

Isolated grounding ground receptacle(s) used installed in patient care spaces outside of a patient care vicinity shall notdefeat the purposes of the safety features of the grounding systems detailed in 517.13 vicinities shall comply with517.16(B)(1) and (2) .

(1)

Isolated The grounding terminals of isolated ground receptacles installed in branch circuits for patient care spaces shall beconnected to an insulated equipment grounding conductor in accordance with 250.146(D) in addition to the two equipmentgrounding conductor paths path required in 517.13(A) and (B).

(2)

. The equipment grounding conductor installed for isolated grounding connected to the grounding terminals of isolated groundreceptacles in patient care areas spaces shall be clearly identified using along the equipment grounding conductor's entirelength by green insulation with one or more yellow stripes.

(2)

The insulated grounding conductor required in 517.13(B)(1) shall be clearly identified along its entire length by greeninsulation, with no yellow stripes, and shall not be connected to the grounding terminals of isolated ground receptacles but shallbe connected to the box or enclosure indicated in 517 .13(B)(1)(2) and to non-current-carrying conductive surfaces of fixedelectrical equipment indicated in 517.13(B)(1)(3).




As specified by FR4260, NEC® 517.16(B) is incorrectly correlated with NEC® 517.13(B)(1) as revised by FR4261. The equipment grounding conductor path referenced to NEC® 517.13(B)(1) [green unstriped insulated conductor] of FR4261 is incorrectly terminated to the IG receptacle’s grounding terminal instead of via the metal box or enclosure to the IG receptacle’s mounting means that bonds the faceplate. NEC® 517.16(B)(2) mandates BOTH an insulated grounding conductor identified green with yellow stripes AND an insulated grounding conductor identified as green (without yellow striping) per NEC® 517.13(B)(1)(1) be connected to the isolated ground receptacle's GROUNDING TERMINAL. Such a connection would negate the isolated grounding of an IG receptacle established by NEC® 250.146(D).

Editorial: Use the term “isolated ground receptacles” for consistency throughout NEC® 517.16 and with NEC® 250.146(D) in accordance with Correlating Committee Note 156. Further, the term “patient care areas” in NEC® 517.16(B)(2) should be consistent with “patient care spaces” now used in Article 517.

Related Item



Correlating Committee Note No. 156-NFPA 70-2015 [Section No. 517.16]


Submitter Full Name: BRIAN ROCK

Organization: HUBBELL INCORPORATED

Street Address:

City:

State:

Zip:

Submittal Date: Thu Jun 25 14:59:33 EDT 2015


1073 of 2079 10/1/2015 11:02 AM


(B)

Isolated grounding receptacle(s) used installed outside of a patient care vicinity shall not defeat the purposes of the safetyfeatures of the grounding systems detailed in 517.13.

(1)

Isolated The grounding terminals of isolated grounding receptacles installed in branch circuits for patient care spaces shall beconnected to an insulated equipment grounding conductor in accordance with 250.146(D) in addition to the two equipmentgrounding conductor paths required in 517.13(A) . The insulated grounding conductor required in 517.13(B)(1) shall be clearlyidentified using green insulation, with no yellow stripes, along its entire length and shall not be connected to the groundingterminals of isolated ground receptacles but shall be connected to the box or enclosure indicated in 517.13 (B)(1)(2) and tonon-current-carrying conductive surfaces of fixed electrical equipment indicated in 517 .13(B)(1)(3).

(2)

The equipment grounding conductor installed for conductor connected to the grounding terminal of isolated groundingreceptacles in patient care areas shall be clearly identified using green insulation with one or more yellow stripes along its entirelength.




It is unclear by FR4260 where the grounding path of referenced NEC® 517.13(B)(1) [green unstriped conductor] of FR4261 is terminated. Effectively, NEC® 517.16(B)(2) mandates BOTH an insulated grounding conductor identified green with yellow stripes AND an insulated grounding conductor identified as green (without yellow striping) per NEC® 517.13(B)(1)(1) to connect to the isolated ground receptacle's GROUNDING TERMINAL. This is wrong as it would defeat the isolated grounding of an IG receptacle per NEC® 250.146(D).Editorial: Use term “isolated ground receptacles” for consistency throughout NEC® 517.16 and with NEC® 250.146(D).

Related Item



Submitter Full Name: VINCE BACLAWSKI

Organization: NEMA

Street Address:

City:

State:

Zip:



1074 of 2079 10/1/2015 11:02 AM


(2)



Informational Note No. 2: Care should be taken in specifying a system containing isolated ground receptacles, becausethe grounding impedance is controlled only by the grounding wires and does not benefit from any conduit or buildingstructure in parallel with the grounding path. [ 99: A.6.3.2.2.7.1 ]


Delete Informational Note 1 because an isolated ground installation 'does not' reduce electric noise. I challenge all of the panel members to publically write out and explain this concept. This is just a myth that has been passed along and people accept the concept, but for sure they don't know what it means.

Delete Information Note 2 because it appears that the panel is concerned that installing such a system is not a good idea. If the system is specified and installed per the NEC than it must be safe.

Related Item



Submitter Full Name: MIKE HOLT

Organization: MIKE HOLT ENTERPRISES INC

Street Address:

City:

State:

Zip:

Submittal Date: Sun Aug 30 16:05:40 EDT 2015


1075 of 2079 10/1/2015 11:02 AM


(2)

The equipment grounding conductor installed for isolated grounding receptacles in patient care areas care spaces shall beclearly identified using green insulation with one or more yellow stripes along its entire length.




The text at 517.16(B)(2) references a patient care "area." By Article 517 definitions, is this not a patient care "space?" CMP-15 has gone to great lengths in the past few Code cycles to change terms like "patient care areas" to "patient care spaces" to reflect NFPA 99 terms in the NEC. This is small, but will aid in that effort.

Related Item


Public Input No. 3059-NFPA 70-2014 [Section No. 517.16]


Submitter Full Name: L. Keith Lofland

Organization: International Association of Electrical Inspectors (IAEI)

Affilliation: None

Street Address:

City:

State:

Zip:



1076 of 2079 10/1/2015 11:02 AM


(2)

The equipment grounding conductor installed for to the grounding terminial of isolated grounding receptacles in patient careareas shall be clearly identified using green insulation with one or more yellow stripes along its entire length.




Changing the language as shown will provide clear instructions to installers and inspectors that the isolated equipment grounding conductor connected to the grounding terminal of the receptacle is required to have green insulation with a yellow stripe.

Related Item



Submitter Full Name: GARY BECKSTRAND

Organization: UTAH ELECTRICAL JATC

Street Address:

City:

State:

Zip:

Submittal Date: Sat Sep 19 11:44:10 EDT 2015


1077 of 2079 10/1/2015 11:02 AM

Public Comment No. 1483-NFPA 70-2015 [ Section No. 517.17(A) ]

(A) Applicability.

The requirements of 517.17 shall apply to hospitals, and other buildings (including multiple-occupancy buildings) with criticalcare (Category category 1 ) spaces or utilizing electrical life-support equipment, and buildings that provide the requiredessential utilities or services for the operation of critical care (Category category 1 ) spaces or electrical life-support equipment.


For consistency with NFPA 99 the terms "critical, basic, general" etc should be removed which is no longer used in the standard to describe function of spaces.

Related Item

First Revision No. 4262-NFPA 70-2015 [Section No. 517.17(A)]




Street Address:

City:

State:

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1078 of 2079 10/1/2015 11:02 AM


517.18 General Care ( Category 2 ) Spaces.

(A) Patient Bed Location.

Each patient bed location shall be supplied by at least two branch circuits, one from the critical branch and one from the normalsystem. All branch circuits from the normal system shall originate in the same panelboard. The electrical receptacles or thecover plate for the electrical receptacles supplied from the critical branch shall have a distinctive color or marking so as to bereadily identifiable and shall also indicate the panelboard and branch-circuit number supplying them.

Branch circuits serving patient bed locations shall not be part of a multiwire branch circuit.

Exception No. 1: Branch circuits serving only special purpose outlets or receptacles, such as portable X-ray outlets, shall notbe required to be served from the same distribution panel or panels.

Exception No. 2: The requirements of 517.18(A) shall not apply to patient bed locations in clinics, medical and dental offices,and outpatient facilities; psychiatric, substance abuse, and rehabilitation hospitals; sleeping rooms of nursing homes; andlimited care facilities meeting the requirements of 517.10(B)(2).

Exception No. 3: A general care (Category 2) patient category 2 bed location served from two separate transfer switches onthe critical branch shall not be required to have circuits from the normal system.

(B) Patient Bed Location Receptacles.

Each patient bed location shall be provided with a minimum of eight receptacles. They shall be permitted to be of the single,duplex, or quadruplex type or any combination of the three. All receptacles shall be listed “hospital grade” and shall be soidentified. The grounding terminal of each receptacle shall be connected to an insulated copper equipment grounding conductorsized in accordance with Table 250.122.

Exception No. 1: The requirements of 517.18(B) shall not apply to psychiatric, substance abuse, and rehabilitation hospitalsmeeting the requirements of 517.10(B)(2).

Exception No. 2: Psychiatric security rooms shall not be required to have receptacle outlets installed in the room.

Informational Note: It is not intended that there be a total, immediate replacement of existing non–hospital gradereceptacles. It is intended, however, that non–hospital grade receptacles be replaced with hospital grade receptaclesupon modification of use, renovation, or as existing receptacles need replacement.

(C) Designated General Care (Category category 2 ) Pediatric Locations.

Receptacles that are located within the patient rooms, bathrooms, playrooms, and activity rooms of pediatric unitsor spaces withsimilar risk as determined by the governing body, other than nurseries, shall be listed tamper-resistant or shall employ a listedtamper-resistant cover. [99:6.3.2.2.6.2(F)]





Public Comment No. 1467-NFPA 70-2015 [Definition: Patient Care Space.]

Related Item

Public Input No. 4266-NFPA 70-2014 [Article 516]




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1079 of 2079 10/1/2015 11:02 AM


517.18 General Care (Category 2) Spaces.

(A) Patient Bed Location.

Each patient bed location shall be supplied by at least two branch circuits, one from the critical branch and one from the normalsystem. All branch circuits from the normal system shall originate in the same panelboard. The electrical receptacles or thecover plate for the electrical receptacles supplied from the critical branch shall have a distinctive color or marking so as to bereadily identifiable and shall also indicate the panelboard and branch-circuit number supplying them.

Branch circuits serving patient bed locations shall not be part of a multiwire branch circuit.

Exception No. 1: Branch circuits serving only special purpose outlets or receptacles, such as portable X-ray outlets, shall notbe required to be served from the same distribution panel or panels.

Exception No. 2: The requirements of 517.18(A) shall not apply to patient bed locations in clinics, medical and dental offices,and outpatient facilities; psychiatric, substance abuse, and rehabilitation hospitals; sleeping rooms of nursing homes; andlimited care facilities meeting the requirements of 517.10(B)(2).

Exception No. 3: A general care (Category 2) patient bed location served from two separate transfer switches on the criticalbranch shall not be required to have circuits from the normal system.


Each patient bed location shall be provided with a minimum of eight receptacles. They shall be permitted to be of the single,duplex, or quadruplex type or any combination of the three. All receptacles shall be listed “hospital grade” and shall be soidentified. The grounding terminal of each receptacle shall be connected to an insulated copper equipment groundingconductor sized in accordance with Table 250.122.

Exception No. 1: The requirements of 517.18(B) shall not apply to psychiatric, substance abuse, and rehabilitation hospitalsmeeting the requirements of 517.10(B)(2).

Exception No. 2: Psychiatric security rooms shall not be required to have receptacle outlets installed in the room.

Informational Note: It is not intended that there be a total, immediate replacement of existing non–hospital gradereceptacles. It is intended, however, that non–hospital grade receptacles be replaced with hospital grade receptaclesupon modification of use, renovation, or as existing receptacles need replacement.

(C) Designated General Care (Category 2) Pediatric Locations.

Receptacles that are located within the patient rooms, bathrooms, playrooms, and activity rooms of pediatric unitsor spaceswith similar risk as determined by the governing body, other than nurseries, shall be listed tamper-resistant or shall employ alisted tamper-resistant cover. [99:6.3.2.2.6.2(F)]


The Correlating Committee directs that further consideration be given to the comments expressed in voting on FR 4266 and the Panel clarify the title of 517.18(C) with regard to extracted information from NFPA 99.

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1080 of 2079 10/1/2015 11:02 AM

Public Comment No. 328-NFPA 70-2015 [ Section No. 517.18(C) ]

(C) Designated General Care (Category 2) Pediatric Locations.

Receptacles that are located within the patient rooms, bathrooms, playrooms, exam rooms, lobbies, hallways, and activityrooms of pediatric unitsor units/hospitals/clinics, or spaces with similar risk as determined by the governing body, other thannurseries, shall be listed tamper-resistant or shall employ a listed tamper-resistant cover. [99:6.3.2.2.6.2(F)]


Being that in a hospital specially servicing the needs of children, they are likely to be in most all areas of a pediatric hospital or clinic, especially common areas such as cafeteria, lobby, halls, etc. By requiring tamper-resistant receptacles throughout will lessen the chance of a child suffering burns or electricucian.

Related Item

Public Input No. 1-NFPA 70-2013 [Section No. 310.15(B)(3)]


Submitter Full Name: Joe Figueiredo

Organization: St Christophers Hospital for Children

Street Address:

City:

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Submittal Date: Fri Jul 31 10:50:18 EDT 2015


1081 of 2079 10/1/2015 11:02 AM

Public Comment No. 1486-NFPA 70-2015 [ Sections 517.19, 517.19 ]

Sections 517.19, 517.19

517.19 Critical Care ( Category 1 ) Spaces.

(A) Patient Bed Location Branch Circuits.

Each patient bed location shall be supplied by at least two branch circuits, one or more from the critical branch and one or morecircuits from the normal system. At least one branch circuit from the critical branch shall supply an outlet(s) only at that bedlocation.

The electrical receptacles or the cover plates for the electrical receptacles supplied from the life safety and critical branchesshall have a distinctive color or marking so as to be readily identifiable. [99:6.4.2.2.6.2(C)]

All branch circuits from the normal system shall be from a single panelboard. Critical branch receptacles shall be identified andshall also indicate the panelboard and circuit number supplying them.

The branch circuit serving patient bed locations shall not be part of a multiwire branch circuit.

Exception No. 1: Branch circuits serving only special-purpose receptacles or equipment in critical care (Category 1) spacesshall be permitted to be served by other panelboards.

Exception No. 2: Critical care ( Category 1 ) spaces spaces served from two separate critical branch transfer switchesshall not be required to have circuits from the normal system.


(1) Minimum Number and Supply.

Each patient bed location shall be provided with a minimum of 14 receptacles, at least one of which shall be connected to eitherof the following:

(1) The normal system branch circuit required in 517.19(A)

(2) A critical branch circuit supplied by a different transfer switch than the other receptacles at the same patient bed location

(2) Receptacle Requirements.

The receptacles required in 517.19(B)(1) shall be permitted to be single, duplex, or quadruplex type or any combination thereof.All receptacles shall be listed “hospital grade” and shall be so identified. The grounding terminal of each receptacle shall beconnected to the reference grounding point by means of an insulated copper equipment grounding conductor.

(C) Operating Room Receptacles.


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Each operating room shall be provided with a minimum of 36 receptaclesdivided between at least two branch circuits. At least12 receptacles, but no more than 24, shall be connected to either of the following:


(2) A critical branch circuit supplied by a different transfer switch than the other receptacles at the same location


The receptacles shall be permitted to be of the locking or nonlocking type, single, duplex, or quadruplex types or anycombination of the three.

All nonlocking-type receptacles shall be listed hospital grade and so identified. The grounding terminal of each receptacle shallbe connected to the reference grounding point by means of an insulated copper equipment grounding conductor.

(D) Patient Care Vicinity Grounding and Bonding (Optional).

A patient care vicinity shall be permitted to have a patient equipment grounding point. The patient equipment grounding point,where supplied, shall be permitted to contain one or more listed grounding and bonding jacks. An equipment bonding jumpernot smaller than 10 AWG shall be used to connect the grounding terminal of all grounding-type receptacles to the patientequipment grounding point. The bonding conductor shall be permitted to be arranged centrically or looped as convenient.

Informational Note: Where there is no patient equipment grounding point, it is important that the distance between thereference grounding point and the patient care vicinity be as short as possible to minimize any potential differences.

(E) Equipment Grounding and Bonding.

Where a grounded electrical distribution system is used and metal feeder raceway or Type MC or MI cable that qualifies as anequipment grounding conductor in accordance with 250.118 is installed, grounding of enclosures and equipment, such aspanelboards, switchboards, and switchgear, shall be ensured by one of the following bonding means at each termination orjunction point of the metal raceway or Type MC or MI cable:

(1) A grounding bushing and a continuous copper bonding jumper, sized in accordance with 250.122, with the bondingjumper connected to the junction enclosure or the ground bus of the panel

(2) Connection of feeder raceways or Type MC or MI cable to threaded hubs or bosses on terminating enclosures

(3) Other approved devices such as bonding-type locknuts or bushings. Standard locknuts shall not be used for bonding.

(F) Additional Protective Techniques in Critical Care (Category 1) Spaces (Optional).

Isolated power systems shall be permitted to be used for critical care (Category 1) spaces, and, if used, the isolated powersystem equipment shall be listed as isolated power equipment. The isolated power system shall be designed and installed inaccordance with 517.160.

Exception: The audible and visual indicators of the line isolation monitor shall be permitted to be located at the nursing stationfor the area being served.

(G) Isolated Power System Equipment Grounding.

Where an isolated ungrounded power source is used and limits the first-fault current to a low magnitude, the equipmentgrounding conductor associated with the secondary circuit shall be permitted to be run outside of the enclosure of the powerconductors in the same circuit.

Informational Note: Although it is permitted to run the grounding conductor outside of the conduit, it is safer to run it withthe power conductors to provide better protection in case of a second ground fault.

(H) Special-Purpose Receptacle Grounding.

The equipment grounding conductor for special-purpose receptacles, such as the operation of mobile X-ray equipment, shall beextended to the reference grounding points of branch circuits for all locations likely to be served from such receptacles. Wheresuch a circuit is served from an isolated ungrounded system, the grounding conductor shall not be required to be run with thepower conductors; however, the equipment grounding terminal of the special-purpose receptacle shall be connected to thereference grounding point.

517.19 Critical Care (Category 1) Spaces.


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(A) Patient Bed Location Branch Circuits.

Each patient bed location shall be supplied by at least two branch circuits, one or more from the critical branch and one or morecircuits from the normal system. At least one branch circuit from the critical branch shall supply an outlet(s) only at that bedlocation.

The electrical receptacles or the cover plates for the electrical receptacles supplied from the life safety and critical branchesshall have a distinctive color or marking so as to be readily identifiable. [99:6.4.2.2.6.2(C)]

All branch circuits from the normal system shall be from a single panelboard. Critical branch receptacles shall be identified andshall also indicate the panelboard and circuit number supplying them.

The branch circuit serving patient bed locations shall not be part of a multiwire branch circuit.

Exception No. 1: Branch circuits serving only special-purpose receptacles or equipment in critical care (Category 1) spacesshall be permitted to be served by other panelboards.

Exception No. 2: Critical care (Category 1) spaces served from two separate critical branch transfer switches shall not berequired to have circuits from the normal system.



Each patient bed location shall be provided with a minimum of 14 receptacles, at least one of which shall be connected to eitherof the following:


(2) A critical branch circuit supplied by a different transfer switch than the other receptacles at the same patient bed location


The receptacles required in 517.19(B)(1) shall be permitted to be single, duplex, or quadruplex type or any combinationthereof. All receptacles shall be listed “hospital grade” and shall be so identified. The grounding terminal of each receptacleshall be connected to the reference grounding point by means of an insulated copper equipment grounding conductor.

(C) Operating Room Receptacles.


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Each operating room shall be provided with a minimum of 36 receptaclesdivided between at least two branch circuits. At least12 receptacles, but no more than 24, shall be connected to either of the following:


(2) A critical branch circuit supplied by a different transfer switch than the other receptacles at the same location


The receptacles shall be permitted to be of the locking or nonlocking type, single, duplex, or quadruplex types or anycombination of the three.

All nonlocking-type receptacles shall be listed hospital grade and so identified. The grounding terminal of each receptacle shallbe connected to the reference grounding point by means of an insulated copper equipment grounding conductor.

(D) Patient Care Vicinity Grounding and Bonding (Optional).

A patient care vicinity shall be permitted to have a patient equipment grounding point. The patient equipment grounding point,where supplied, shall be permitted to contain one or more listed grounding and bonding jacks. An equipment bonding jumpernot smaller than 10 AWG shall be used to connect the grounding terminal of all grounding-type receptacles to the patientequipment grounding point. The bonding conductor shall be permitted to be arranged centrically or looped as convenient.

Informational Note: Where there is no patient equipment grounding point, it is important that the distance between thereference grounding point and the patient care vicinity be as short as possible to minimize any potential differences.

(E) Equipment Grounding and Bonding.

Where a grounded electrical distribution system is used and metal feeder raceway or Type MC or MI cable that qualifies as anequipment grounding conductor in accordance with 250.118 is installed, grounding of enclosures and equipment, such aspanelboards, switchboards, and switchgear, shall be ensured by one of the following bonding means at each termination orjunction point of the metal raceway or Type MC or MI cable:

(1) A grounding bushing and a continuous copper bonding jumper, sized in accordance with 250.122, with the bondingjumper connected to the junction enclosure or the ground bus of the panel

(2) Connection of feeder raceways or Type MC or MI cable to threaded hubs or bosses on terminating enclosures

(3) Other approved devices such as bonding-type locknuts or bushings. Standard locknuts shall not be used for bonding.

(F) Additional Protective Techniques in Critical Care (Category 1) Spaces (Optional).

Isolated power systems shall be permitted to be used for critical care (Category 1) spaces, and, if used, the isolated powersystem equipment shall be listed as isolated power equipment. The isolated power system shall be designed and installed inaccordance with 517.160.

Exception: The audible and visual indicators of the line isolation monitor shall be permitted to be located at the nursing stationfor the area being served.

(G) Isolated Power System Equipment Grounding.

Where an isolated ungrounded power source is used and limits the first-fault current to a low magnitude, the equipmentgrounding conductor associated with the secondary circuit shall be permitted to be run outside of the enclosure of the powerconductors in the same circuit.

Informational Note: Although it is permitted to run the grounding conductor outside of the conduit, it is safer to run it withthe power conductors to provide better protection in case of a second ground fault.

(H) Special-Purpose Receptacle Grounding.

The equipment grounding conductor for special-purpose receptacles, such as the operation of mobile X-ray equipment, shallbe extended to the reference grounding points of branch circuits for all locations likely to be served from such receptacles.Where such a circuit is served from an isolated ungrounded system, the grounding conductor shall not be required to be runwith the power conductors; however, the equipment grounding terminal of the special-purpose receptacle shall be connected tothe reference grounding point.



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517.21 Ground-Fault Circuit-Interrupter Protection for Personnel.

Ground-fault circuit-interrupter protection for personnel shall not be required for receptacles installed in those critical care(Category category 1 ) spaces where the toilet and basin are installed within the patient room.



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(A) Applicability.

The requirements of Part III, 517.29 through 517.30, shall apply to critical care (Category category 1 ) and general care(Category 2) hospitals category 2 spaces and other health care facilities spaces using Type 1 essential electrical systemswhere patients are sustained by electrical life-support equipment.

Informational Note No. 1: For performance, maintenance, and testing requirements of essential electrical systems inhospitals, see NFPA 99-2015, Health Care Facilities Code. For installation of centrifugal fire pumps, see NFPA 20-2013,Standard for the Installation of Stationary Pumps for Fire Protection.

Informational Note No. 2: For additional informationon Type 1 and Type 2 essential electrical systems, see NFPA99-2015, Health Care Facilities Code.



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(B)

Critical care (Category category 1 ) spaces shall be served only by a Type 1 essential electrical system. [99:6.3.2.2.10.1]



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1089 of 2079 10/1/2015 11:02 AM


517.30 Sources of Power.

(A) Two Independent Power Sources.

Essential electrical systems shall have a minimum of the following two independent sources of power: a normal sourcegenerally supplying the entire electrical system and one alternate source(s) for use when the normal source is interrupted.[99:6.4.1.1.4]

(B) Types of Power Sources.

(1)

Where the normal source consists of generating units on the premises, the alternate source shall be either another generatingset or an external utility service. [99:6.4.1.1.5]

(2) Fuel Cell Systems.

Fuel cell systems shall be permitted to serve as the alternate source for all or part of an essential electrical system, providedthe following conditions apply:

N +(1) Installation shall comply with NFPA 853, Standard for installation of Stationary Fuel Cell Power Systems

(2) N 1 units shall be provided where N units have sufficient capacity to supply the demand

loads ofload of the portion of the system served.

(3) System shall be able to assume loads within 10 seconds of loss of normal power source.

(4) System shall have a continuing source of fuel supply, together with sufficient on-site fuel storage for the essential systemtype.

(5) A connection shall be provided for a portable diesel generator to supply life safety and critical portions of the distributionsystem. [ 99: 6.4.1.1.7(1) through (5)]

Fuel cell systems shall be listed for emergency system use.

(C) Location of Essential Electrical System Components.

Essential electrical system components shall be located to minimize interruptions caused by natural forces common to the area(e.g., storms, floods, earthquakes, or hazards created by adjoining structures or activities). Installations of electrical servicesshall be located to reduce possible interruption of normal electrical services resulting from similar causes as well as possibledisruption of normal electrical service due to internal wiring and equipment failures. Feeders shall be located to provide physicalseparation of the feeders of the alternate source and from the feeders of the normal electrical source to prevent possiblesimultaneous interruption.

Informational Note: Facilities in which the normal source of power is supplied by two or more separate central station-fedservices experience greater than normal electrical service reliability than those with only a single feed. Such a dualsource of normal power consists of two or more electrical services fed from separate generator sets or a utilitydistribution network that has multiple power input sources and is arranged to provide mechanical and electricalseparation so that a fault between the facility and the generating sources is not likely to cause an interruption of morethan one of the facility service feeders.


The text as written in the first revision does not match the extracted text from NFPA 99 6.4.1.1.7. This change aligns this section with the extracted text with consideration to the NEC MOS.

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1090 of 2079 10/1/2015 11:02 AM

Public Comment No. 1705-NFPA 70-2015 [ Section No. 517.31(B) [Excluding any Sub-Sections] ]

The number of transfer switches to be used shall be based on reliabilityand design. Each branch of the essential electricalsystem shall have one or more transfer switches. Transfer OnlyTransfer equipment shall meet the on the life safety branchshall meet the requirements in 700.5(A), (B), and (C) where commercially available.

One transfer switch and downstream distribution system shall be permitted to serve one or more branches in a facility with amaximum demand on the essential electrical system of 150 kVA.

Informational Note No. 1: See NFPA 99-2015, Health Care Facilities Code, 6.4.3.2, Transfer Switches; 6.4.2.1.5,Automatic Transfer Switch Features; 6.4.2.1.5.15, Nonautomatic Transfer Switch Features; and 6.4.2.1.7, NonautomaticTransfer Device Features.

Informational Note No. 2: See Informational Note Figure 517.31(a).

Informational Note No. 3: See Informational Note Figure 517.31(b).

Informational Note Figure 517.31(a) Hospital — Minimum Requirement (greater than 150 kVA) for Transfer SwitchArrangement.

Informational Note Figure 517.31(b) Hospital — Minimum Requirement (150 kVA or less) for Transfer SwitchArrangement.


The 2015 NFPA 99 at (6.4.2.2.1.5) states that Article 700 shall only apply to the life safety branch.

Related Item

Public Input No. 3597-NFPA 70-2014 [Section No. 517.30(B)(2)]


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Public Comment No. 675-NFPA 70-2015 [ Section No. 517.31(C)(3) ]

(3) Mechanical Protection of the Essential Electrical System.

The wiring of the life safety and critical branches shall be mechanically protected. Where installed as branch circuits in patientcare spaces, the installation shall comply with the requirements of 517.13(A) and (B). Only the following wiring methods shallbe permitted:

(1) Nonflexible metal raceways, Type MI cable, Type RTRC marked with the suffix –XW, or Schedule 80 PVC conduit.Nonmetallic raceways shall not be used for branch circuits that supply patient care areas.

(2) Where encased in not less than 50 mm (2 in.) of concrete, Schedule 40 PVC conduit, flexible nonmetallic or jacketedmetallic raceways, or jacketed metallic cable assemblies listed for installation in concrete. Nonmetallic raceways shall notbe used for branch circuits that supply patient care areas

(3) Listed metal sheathed cable assemblies where installed in accordance with 300 .4 and not subject to physical damage.

(4) Listed flexible metal raceways and listed metal sheathed cable assemblies in any of the following:

(5) Where used in listed prefabricated medical headwalls

(6) In listed office furnishings

(7) Where fished into existing walls or ceilings, not otherwise accessible and not subject to physical damage

(8) Where necessary for flexible connection to equipment

(9) For equipment that requires a flexible connection due to movement, vibration, or operation

(10) Luminaires installed in rigid ceiling structures where there is no access above the ceiling space after the luminaireis installed.

(11) Flexible power cords of appliances or other utilization equipment connected to the emergency system.

(12) Cables for Class 2 or Class 3 systems permitted by Part VI of this Article, with or without raceways.

Informational Note: See 517.13 for additional grounding requirements in patient care areas.


The Panel statement concerning product Standards and performance does not address the factual

information provided by PI 341 and the original proposal from the 2014 Code Revision offering that the

present Product Standard and Product Performance is adequate for the application and is proven

through its approval for the use since the 2005 NEC.

Since these wiring methods have been providing acceptable service and performance since the 2005

NEC where it is fished, the concern seems to be the rigors of installation in new construction. The

installation of these wiring methods in hospital construction is no more severe or damaging than their

installation in any other building construction or job site where these cables are extensively used. Listed

metal sheathed cable assemblies installed in accordance with the NEC 300.4 and where not subject to

physical damage provides protection against mechanical damage for the Emergency System and has

been doing so since the 2005 NEC.

All wiring methods can be damaged if installed in inappropriate locations. Type MC cable offers a

comparable level of protection to that provided by EMT in ordinary locations and the environment of

hospital construction and operation.

There is no need for a special construction of MC where used in normal construction. A higher level of

performance for the cable where exposed to severe physical damage may be appropriate but is not


1094 of 2079 10/1/2015 11:02 AM

necessary where installed in ordinary locations such as in floors, walls, and ceilings. The requirements in

300.4 provide protection against normal physical damage during construction and operation in general

locations.

Related Item

Public Input No. 341-NFPA 70-2014 [Global Input]

Public Input No. 2757-NFPA 70-2014 [Section No. 517.30(C)(3)]


Submitter Full Name: Phil Simmons

Organization:

Affilliation: National Armored Cable Manufacturers Association

Street Address:

City:

State:

Zip:

Submittal Date: Wed Sep 16 01:08:21 EDT 2015


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(3) Mechanical Protection of the Essential Electrical System.

The wiring of the life safety and critical branches shall be mechanically protected. Where installed as branch circuits in patientcare spaces, the installation shall comply with the requirements of 517.13(A) and (B). Only the following wiring methods shallbe permitted:

(1) Nonflexible metal raceways, Type MI cable, Type RTRC marked with the suffix –XW, or Schedule 80 PVC conduit.Nonmetallic raceways shall not be used for branch circuits that supply patient care areas.

(2) Where encased in not less than 50 mm (2 in.) of concrete, Schedule 40 PVC conduit, flexible nonmetallic or jacketedmetallic raceways, or jacketed metallic cable assemblies listed for installation in concrete. Nonmetallic raceways shall notbe used for branch circuits that supply patient care areas.

(3) Listed flexible metal raceways and listed metal sheathed cable assemblies in any of the following:

(4) Where used in listed prefabricated medical headwalls

(5) In listed office furnishings

(6) Where fished into existing walls or ceilings, not otherwise accessible and not subject to physical damage

(7) Where necessary for flexible connection to equipment

(8) For equipment that requires a flexible connection due to movement, vibration, or operation

(9) Luminaires installed in rigid ceiling structures where there is no access above the ceiling space after the luminaireis installed.

(10) Flexible power cords of appliances or other utilization equipment connected to the emergency system.

(11) Cables for Class 2 or Class 3 systems permitted by Part VI of this Article, with or without raceways.

(12) Listed MC cable identified as providing crush, impact and penetration circuit protection performance comparable toelectrical metallic tubing.

Informational Note: See 517.13 for additional grounding requirements in patient care areas.


Type MC cable as shown in previous UL Fact Finding Reports can be constructed to provide enhanced mechanical protection comparable to EMT while maintaining ground path integrity before, during and after installation.

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Public Input No. 338-NFPA 70-2014 [Global Input]


Submitter Full Name: Charles Mercier

Organization: Southwire Company

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(A) Task Illumination and Selected Receptacles.

The critical branch of the essential electrical system shall supply power for task illumination, fixed equipment, selectedreceptacles, and special power circuits serving the following areas and functions related to patient care:

(1) Critical care ( Category 1 ) spaces that utilize anesthetizing gases,task illumination, selected receptacles, and fixedequipment

(2) The isolated power systems in special environments

(3) Patient care spaces, task illumination, and selected receptacles in the following:

(4) Infant nurseries

(5) Medication preparation areas

(6) Pharmacy dispensing areas

(7) Selected acute nursing areas

(8) Psychiatric bed areas (omit receptacles)

(9) Ward treatment rooms

(10) Nurses’ stations (unless adequately lighted by corridor luminaires)

(11) Additional specialized patient care task illumination and receptacles, where needed

(12) Nurse call systems

(13) Blood, bone, and tissue banks

(14) Telephone and data equipment rooms and closets

(15) Task illumination, selected receptacles, and selected power circuits for the following:

General care (Category 2) beds

a. Category 2 beds (at least one duplex receptacle in each patient bedroom)

b. Angiographic labs

c. Cardiac catheterization labs

d. Coronary care units

e. Hemodialysis rooms or areas

f. Emergency room treatment areas (selected)

g. Human physiology labs

h. Intensive care units

i. Postoperative recovery rooms (selected)

(16) Additional task illumination, receptacles, and selected power circuits needed for effective facility operation, includingsingle-phase fractional horsepower motors, shall be permitted to be connected to the critical branch. [99:6.4.2.2.4.2(9)]



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(B) ) Switching.

It shall be permitted to control task illumination on the critical branch.


This is not needed NFPA 99 permits this and A above is a extract.

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Public Comment No. 1817-NFPA 70-2015 [ Section No. 517.35 [Excluding any Sub-Sections] ]

The equipment branch shall be installed and connected to the alternate power source such that the equipment described in517.35(A) is automatically restored to operation at appropriate time-lag intervals following the energizing of the essentialelectrical system. Its arrangement shall also provide for the subsequent connection of equipment described in 517.35(B).[99:6.4.2.2.5.2]

Exception: For essential electrical systems under 150 kVA, deletion of the time-lag intervals feature for delayed automaticconnection to the equipment system shall be permitted.


The Correlating Committee directs that this First Revision be reconsidered with regard to the deletion of the term “or more” and to correlate with FR 4279. Section 3.2.7.3.2 of the NFPA style manual requires the “context of the original material not be compromised or violated.”

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Organization: NFPA

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(A) General.

Essential electrical systems for nursing homes and limited care facilities shall be divided into the following two branchcircuits branches , the life safety branch and the equipment branch. [99:A.6.5.2.2.1.2]

The division between the branches shall occur at transfer switches where more than one transfer switch is required.

Informational Note No. 1: Essential electrical systems are comprised of two separate branches capable of supplying alimited amount of lighting and power service, which is considered essential for the protection of life and safety andeffective operation of the institution during the time normal electrical service is interrupted for any reason.

Informational Note No. 2: For more information see NFPA 99-2015, Health Care Facilities Code [99:A.6.5.2.1.1]


Requiring the essential systems to be two branch circuits is unnecessarily limiting. Similar to the language of 517.30(B) the separation is simply into two branches.

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Submitter Full Name: MARCUS SAMPSON

Organization: MINNESOTA DEPARTMENT OF LABOR & INDUSTRY

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1101 of 2079 10/1/2015 11:02 AM


(B) Transfer Switches.

The number of transfer switches to be used shall be based on reliability, design, and load considerations.99:6.5.2.2.1.1]

(1) Each branch of the essential electrical system shall have one or more transfer switches. [99:6.5.2.2.1.3] Transferequipment shall OnlyTransfer equipment on the life safety branch shall have to meet the requirements in700.5(A)700.5(A), (B), and (C) where commercially available.

(2) One transfer switch shall be permitted to serve one or more branches or systems in a facility with a continuous load on theswitch of 150 kVA (120 kW) or less. [99:6.5.2.2.1.6]

Informational Note No. 1: See NFPA 99-2015, Health Care Facilities Code, 6.5.3.2, Transfer Switch Operation Type II;6.4.2.1.5, Automatic Transfer Switch Features; and 6.4.2.1.7, Nonautomatic Transfer Device Features.

Informational Note No. 2: See Informational Note Figure 517.42(a).

Informational Note No. 3: See Informational Note Figure 517.42(b).

Informational Note Figure 517.42(a) Nursing Home and Limited Health Care Facilities — Minimum Requirement(greater than 150 kVA) for Transfer Switch Arrangement.

Informational Note Figure 517.42(b) Nursing Home and Limited Health Care Facilities — Minimum Requirement (150kVA or less) for Transfer Switch Arrangement.


The 2015 NFPA 99 at (6.4.2.2.1.5) states that Article 700 shall only apply to the life safety branch.

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1102 of 2079 10/1/2015 11:02 AM




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1103 of 2079 10/1/2015 11:02 AM


(A) Delayed Automatic Connection.

The following equipment shall be permitted to be connected to the equipment branch and shall be arranged for delayedautomatic connection to the alternate power source:

(1) Task illumination and selected receptacles in the following:

Patient care spaces

Medication preparation areas

Pharmacy dispensing areas

Nurses’ stations (unless adequately lighted by corridor luminaires)

(2) Supply, return, and exhaust ventilating systems for air-born infectious isolation rooms.

(3) Sump pumps and other equipment required to operate for the safety of major apparatus and associated control systemsand alarms

(4) Smoke control and stair pressurization systems

(5) Kitchen hood supply and/or exhaust systems, if required to operate during a fire in or under the hood

(6) Nurse call systems [ 99: 6.5.2.2.3.3]


This is not extracted from 99 correctly, item 1 should have 2,3,4,5 as a subset.

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1104 of 2079 10/1/2015 11:02 AM


517.45 Essential Electrical Systems for Other Health Care Facilities.

(A) Essential Electrical Distribution.

If required by the governing body, the essential electrical distribution system for basic care ( Category 3 ) patient care spacesshall be comprised of an alternate power system capable of supplying a limited amount of lighting and power service for theorderly cessation of procedures during a time normal electrical service is interrupted

Informational Note: See NFPA 99-2015, Health Care Facilities Code.

(B) Electrical Life Support Equipment.

Where electrical life support equipment is required, the essential electrical distribution system shall be as described in 517.29through 517.30.

(C) Critical Care ( Category 1 ) Patient Care Spaces.

Where critical patient care ( Category 1 ) spaces are present, the essential electrical distribution system shall be as describedin 517.29 through 517.30.

(D) General Care ( Category 2 ) Patent Care Spaces.

Where general care ( Category 2 ) patent care spaces are present, the essential electrical distribution system shall be asdescribed in 517.40 through 517.45.

(E) Power Systems.

If required, alternate power sources acceptable to the governing body shall comply with the requirements of NFPA 99-2015,Health Care Facilities Code.



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1105 of 2079 10/1/2015 11:02 AM

Public Comment No. 1268-NFPA 70-2015 [ Section No. 517.61(A)(2) ]

(2) Design and Installation.

Where an isolated power system is utilized, the isolated power equipment shall be listed and labeled as isolated powerequipment, and the isolated power system shall be designed and installed in accordance with 517.160.



Essential_Guide_to_Product_Testing_and_Certification_NOV_2014.pdf

ETL Essential Guide to Product Testing & Certification 2014/2015 North American Edition. Please review document page numbers 5, 8 and 10 to see that ETL has requirements similar to UL, that products that do not bear their certification (listed) mark are not considered by ETL as being listed.


UL recognizes the Correlating Committee created a global First Correlating Revision (FCR) which directed that in all locations where the term “and labeled” was added after “listed” during the First Revision Stage, the words “and labeled” after “listed” be deleted, returning to previous text. UL understands that the Correlating Committee appointed a task group to address several issues involving the use of the terms “listed” and “labeled,” most importantly, to clarify and establish a distinction between the terms “listed” and “labeled” which are often used interchangeably. UL supports the need for this task group. However, UL does not expect the work of this task group to affect the 2017 NEC regarding the issue of “listed and labeled.” As such, UL is submitting comments to request that the words “and labeled” be added in various locations throughout the Code for the reasons expressed in the public inputs UL submitted on this issue. UL believes that these revisions will address an ongoing problem that should not wait until the 2020 NEC for resolution.

Subsequent to the Public Input Code Panel Meetings, UL has discussed this issue with its Electrical Council whose membership includes many AHJs. The proposed revisions to the NEC received general support from the membership. This issue was also discussed at a NEMA – NRTLs Forum held on August 14, 2015 at NEMA Headquarters. UL reiterated its support for the proposed revisions. The NRTLs represented at the meeting voiced no objection to the proposals.

The rationale for the revision was simple, to provide information to the AHJ regarding the suitability of equipment they encounter. The mark on the product is the manufacturer’s attestation that the product is in compliance with the appropriate standard. NRTL’s conduct factory surveillance of products, surveillance is one method to validate the manufacturer’s attestation. Should a product be found not to be compliant the manufacturer has the option of removing the mark and shipping the product without the mark, or holding the shipment and bringing the product into compliance. In either case the “Listing” is not impacted, as the “listing” is created at the completion of the “original” certification of the product and indicates the authorization but not the mandate to label products. So the only true way an AHJ can determine whether the product he is seeing is compliant with the applicable standard is via a label on the product. Taking it one step further, listings change with time. It is quite possible that a “listing” has been withdrawn; however labeled product may still be available for sale. Should equipment that is labeled, but not listed, be deemed acceptable? Based on the NEC definitions, it is possible to have a product that meets the Article 100 definition of listed but the testing organization made the manufacture remove the label for a non-compliance issue.

As for the concerns of products that are too small to be labeled, the definition of labeled is not limited to an actual label, it also includes symbols, or other identifying marks. The Safety Standards which define the listing requirements do not address labeling of products as defined by Article 100. As a general rule, NRTL’s do not consider a product as being listed unless it is also labeled. The UL White Book states that “Only those products bearing the appropriate UL Mark and the company's name, trade name, trademark or other authorized identification should be considered as being covered by UL's Certification, Listing, Classification and Follow-Up Service. The UL Mark provides evidence of listing or labeling, which may be required by installation codes or standards.” Again the requirements for the UL Mark are not a Safety Standard requirement, they are a UL requirement and the only way to show that a product is UL Certified (Listed); other NRTL’s have similar requirements.

Related Item

Public Input No. 915-NFPA 70-2014 [Section No. 517.61(A)(2)]

First Revision No. 4203-NFPA 70-2015 [Section No. 517.61(A)(2)]


Submitter Full Name: JEFFREY FECTEAU

Organization: UNDERWRITERS LABORATORIES LLC

Affilliation: UL


1106 of 2079 10/1/2015 11:02 AM

Public Comment No. 1272-NFPA 70-2015 [ Section No. 517.63(E) ]

(E) Location of Isolated Power Systems.

Where an isolated power system is utilized, the isolated power equipment shall be listed and labeled as isolated powerequipment. Isolated power system equipment and its supply circuit shall be permitted to be located in an anesthetizing location,provided it is installed above a hazardous (classified) location or in an other-than-hazardous (classified) location.










Related Item

Public Input No. 916-NFPA 70-2014 [Section No. 517.63(E)]

First Revision No. 4204-NFPA 70-2015 [Section No. 517.63(E)]




Affilliation: UL


1108 of 2079 10/1/2015 11:02 AM

Public Comment No. 1818-NFPA 70-2015 [ Section No. 517.71(C) ]

(C) Over 2000-Volt Supply.

Circuits and equipment operated on a supply circuit of over 2000 volts shall comply with Article 490.


The Correlating Committee directs that this First Revision be reconsidered. Code-making Panel 9 did not change the title of Article 490 and its scope covers equipment over 1000 volts.

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First Revision No. 4205-NFPA 70-2015 [Section No. 517.71(C)]



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1110 of 2079 10/1/2015 11:02 AM

Public Comment No. 1820-NFPA 70-2015 [ Part IV. ]

Part IV. Portable Switchboards on Stage


The Correlating Committee directs that further consideration be given to the comments expressed in voting on FR 4223 for changes to the title of Part VI in Article 520.

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First Revision No. 4223-NFPA 70-2015 [Sections 520.71, 520.72, 520.73]



Organization: NFPA

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2064 of 2079 10/1/2015 11:02 AM

Public Comment No. 1819-NFPA 70-2015 [ Definition: Adapter. ]

Adapter.

A device used to adapt a circuit from one configuration of an attachment plug or receptacle to another configuration with thesame current rating.


The Correlating Committee directs that the panel reconsider the definition of “adapter” related to multiple different uses of the term throughout Article 520.

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First Revision No. 4212-NFPA 70-2015 [New Definition after Definition: Two-Fer.]



Organization: NFPA

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1111 of 2079 10/1/2015 11:02 AM


520.9 Branch Circuits.

A branch circuit of any size supplying one or more receptacles shall be permitted to supply stage set lighting. The voltage ratingof the receptacles shall be not less than the circuit voltage. Receptacle ampere ratings and branch-circuit conductor ampacityshall be not less than the branch-circuit overcurrent device ampere rating. Table 210.21(B)(2) and Section 210.23 shall notapply. Section 210.8 (B) shall be permitted but not required.


This comment retains the current requirements. No justification was made for increasing the requirements in this Article imposed by changes in 210.8(B).

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Submitter Full Name: Kenneth Vannice

Organization: [ Not Specified ]

Affilliation: USITT Engineering Commission

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1112 of 2079 10/1/2015 11:02 AM


520.21 General.

Fixed stage switchboards shall comply with 520.21(1) through (4):

(1) Fixed stage switchboards shall be listed and labeled .

(2) Fixed stage switchboards shall be readily accessible but shall not be required to be located on or adjacent to the stage.Multiple fixed stage switchboards shall be permitted at different locations.

(3) A fixed stage switchboard shall contain overcurrent protective devices for all branch circuits supplied by that switchboard.

(4) A fixed stage switchboard shall be permitted to supply both stage and non-stage equipment.










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1113 of 2079 10/1/2015 11:02 AM




Affilliation: UL

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Submittal Date: Thu Sep 24 17:34:01 EDT 2015


1114 of 2079 10/1/2015 11:02 AM


(3) Identification of Conductors in Multiconductor Extra-Hard-Usage Cords and Cables.

Grounded (neutral) conductors shall be white without stripe or shall be identified by a distinctive white marking at theirterminations. Grounding conductors shall be green with or without yellow stripe or shall be identified by a distinctive greenmarking at their terminations.

Table 520.44(C)(3) Ampacity of Listed Extra-Hard-Usage Cords and Cables with Temperature Ratings of 75°C (167°F) and90°C (194°F)* [Based on Ambient Temperature of 30°C (86°F)]

Size (AWG)

Temperature Rating of

Cords and CablesMaximum Rating of Overcurrent Device

75°C

(167°F)

90°C

(194°F)

14 24 28 15

12 32 35 20

10 41 47 25

8 57 65 35

6 77 87 45

4 101 114 60

2 133 152 80

*Ampacity shown is the ampacity for multiconductor cords and cables where only three copper conductors are current-carryingas described in 400.5. If the number of current-carrying conductors in a cord or cable exceeds three and the load diversity is aminimum of 50 percent or less, the ampacity of each conductor shall be reduced as shown in the following table:

Table 520.44(C)(3)(a) Ampacity Adjustment Factors for More Than Three Current-Carrying Conductors in a Cord or CableWhere Load Diversity Is 50% or Less

Number of Conductors Percent of Ampacity Value in Table 520.44(C)(3)

4–6 80

7–24 70

25–42 60

43 and above 50

Note: Ultimate insulation temperature. In no case shall conductors be associated together in such a way with respect to the kindof circuit, the wiring method used, or the number of conductors such that the temperature limit of the conductors is exceeded.

A neutral conductor that carries only the unbalanced current from other conductors of the same circuit need not beconsidered as a current-carrying conductor.

In a 3-wire circuit consisting of 2-phase conductors and the neutral conductor of a 4-wire, 3-phase, wye-connected system,the neutral conductor carries approximately the same current as the line-to-neutral currents of the other conductors and shall beconsidered to be a current-carrying conductor.

On a 4-wire, 3-phase wye circuit where the major portion of the load consists of nonlinear loads, there are harmonic currentsin the neutral conductor. Therefore, the neutral conductor shall be considered to be a current-carrying conductor.

Informational Note: For the purposes of Table 520.44(C)(3)(a), load diversity is the percentage of the total current of allsimultaneously energized circuits fed by the cable to the sum of the ampacity ratings of all circuits in that cable.


The phrase "... load diversity is a minimum of 50% or less, ..." is somewhat self-contradictory. Clarifying the language to read "... load diversity of 50% or less, ..." was the intention of the Panel in the FR.

Related Item

First Revision No. 4210-NFPA 70-2015 [Section No. 520.44(C)(3)]



Submitter Full Name: Mitchell Hefter

Organization: Philips Lighting


1115 of 2079 10/1/2015 11:02 AM


(3) Identification of Conductors in Multiconductor Extra-Hard-Usage Cords and Cables.

Grounded (neutral) conductors shall be white without stripe or shall be identified by a distinctive white marking at theirterminations. Grounding conductors shall be green with or without yellow stripe or shall be identified by a distinctive greenmarking at their terminations.

Table 520.44(C)(3) Ampacity of Listed Extra-Hard-Usage Cords and Cables with Temperature Ratings of 75°C (167°F) and90°C (194°F)* [Based on Ambient Temperature of 30°C (86°F)]

Size (AWG)

Temperature Rating of

Cords and CablesMaximum Rating of Overcurrent Device

75°C

(167°F)

90°C

(194°F)

14 24 28 15

12 32 35 20

10 41 47 25

8 57 65 35

6 77 87 45

4 101 114 60

2 133 152 80

*Ampacity shown is the ampacity for multiconductor cords and cables where only three copper conductors are current-carryingas described in 400.5. If the number of current-carrying conductors in a cord or cable exceeds three and the load diversity is aminimum of 50 percent or less, the ampacity of each conductor shall be reduced as shown in the following table:

Table 520.44(C)(3)(a) Ampacity Adjustment Factors for More Than Three Current-Carrying Conductors in a Cord or CableWhere Load Diversity Is 50% or Less

Number of Conductors Percent of Ampacity Value in Table 520.44(C)(3)

4–6 80

7–24 70

25–42 60

43 and above 50

Note: Ultimate insulation temperature. In no case shall conductors be associated together in such a way with respect to the kindof circuit, the wiring method used, or the number of conductors such that the temperature limit of the conductors is exceeded.

A neutral conductor that carries only the unbalanced current from other conductors of the same circuit need not beconsidered as a current-carrying conductor.

In a 3-wire circuit consisting of 2- two phase conductors and the neutral conductor of a 4-wire, 3-phase, wye-connectedsystem, the neutral conductor carries approximately the same current as the line-to-neutral currents of the other conductors andshall be considered to be a current-carrying conductor.

On a 4-wire, 3-phase wye circuit where the major portion of the load consists of nonlinear loads, there are harmonic currentsin the neutral conductor. Therefore, the neutral conductor shall be considered to be a current-carrying conductor.

Informational Note: For the purposes of Table 520.44(C)(3)(a), load diversity is the percentage of the total current of allsimultaneously energized circuits fed by the cable to the sum of the ampacity ratings of all circuits in that cable.


There was a typo in the editing of the panel action creating the First Revision. This is supposed to address two of the three phases in a 3-phase, 4-wire feed, i.e., not all of the phases. This is not addressing a 2-phase circuit. This edit corrects the error.

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First Revision No. 4210-NFPA 70-2015 [Section No. 520.44(C)(3)]






1117 of 2079 10/1/2015 11:02 AM


520.48 Curtain Machines.

Curtain machines shall be listed and labeled .










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Affilliation: UL

Street Address:


1119 of 2079 10/1/2015 11:02 AM


(B) Conductor Ampacity.

The ampacity of conductors shall be as given in 400.5, except multiconductor, listed, extra-hard usage portable cords that arenot in direct contact with equipment containing heat-producing elements shall be permitted to have their ampacity determinedby Table 520.44(C)(3) . Maximum load current in any conductor with an ampacity determined by Table 520.44(C)(3) shall notexceed the values in Table 520.44(C)(3). Where the ampacity adjustment factors of Table 520.44(C)(3)(a) are applied for morethan three current-carrying conductors in a portable cord, the load diversity shall be 50 percent or less.

Exception: Where alternate conductors are allowed in 520.68(A)(3 4 ), their ampacity shall be as given in the appropriate tablein this Code for the types of conductors employed.


Editorial correction - the Exception refers to the wrong section. 520.68(A)(4) was 520.68(A)(3) prior to insertion of the current 520.68(A)(3) 'Luminaire Supply Cords.' This edit corrects the reference.

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Public Input No. 746-NFPA 70-2014 [Section No. 520.68(B)]




Affilliation: Illuminating Engineering Society

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1121 of 2079 10/1/2015 11:02 AM

Public Comment No. 806-NFPA 70-2015 [ Definition: Operator. ]

Operator (as related to carnivals, circuses, fairs and similar events) .

The individual responsible for starting, stopping, and controlling an amusement ride or supervising a concession.


All NFPA definitions are incorporated without change or comment into the NFPA Glossary of terms which simply indicates the code or standard where the definition originates. The definition of operator in the NEC can refer to multiple occupations and is not unique to article 525. If the panel wants to identify it in a different way, that wouldstill comply with the concept that "operator" is too generic a term to stay as a definition that applies solely to a carnival operator.

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Public Input No. 2448-NFPA 70-2014 [Definition: Operator.]


Submitter Full Name: Marcelo Hirschler

Organization: GBH International

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Submittal Date: Sun Sep 20 19:53:05 EDT 2015


1122 of 2079 10/1/2015 11:02 AM

Public Comment No. 807-NFPA 70-2015 [ Definition: Portable Structures. ]

Portable Structures (as related to carnivals, circuses, fairs and similar events) .

Units designed to be moved including, but not limited to, amusement rides, attractions, concessions, tents, trailers, trucks, andsimilar units.


All NFPA definitions are incorporated without change or comment into the NFPA Glossary of terms which simply indicates the code or standard where the definition originates. The definition of portable structures in the NEC can refer to multiple structures and is not unique to article 525. If the panel wants to identify it in a different way, that would still comply with the concept that "portable structures" is too generic a term to stay as a definition that applies solely to carnival portable structures.

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Public Input No. 2450-NFPA 70-2014 [Definition: Portable Structures.]


Submitter Full Name: Marcelo Hirschler

Organization: GBH International

Street Address:

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Submittal Date: Sun Sep 20 19:59:31 EDT 2015


1123 of 2079 10/1/2015 11:02 AM


525.23 Ground-Fault Circuit-Interrupter (GFCI) Protection.

Where GFCI protection is provided through the use of GFCI receptacles, and the branch circuits supplying receptacles utilizeflexible cord, the receptacles shall be identified for portable use.

(A) Where GFCI Protection Is Required.

GFCI protection for personnel shall be provided for the following:

(1) All 125-volt, single-phase, 15- and 20-ampere non-locking-type receptacles used for disassembly and reassembly orreadily accessible to the general public

(2) Equipment that is readily accessible to the general public and supplied from a 125-volt, single-phase, 15- or 20-amperebranch circuit

The GFCI shall be permitted to be an integral part of the attachment plug or located in the power-supply cord within 300 mm(12 in.) of the attachment plug. Listed cord sets incorporating GFCI for personnel shall be permitted.

(B) Where GFCI Protection Is Not Required.

Receptacles that are not accessible from grade level and that only facilitate quick disconnecting and reconnecting of electricalequipment shall not be required to be provided with GFCI protection. These receptacles shall be of the locking type.

(C) Where GFCI Protection Is Not Permitted.

Egress lighting shall not be protected by a GFCI.


The Correlating Committee directs that further consideration be given to new initial paragraph in 525.23 relative to the first level subdivision numbering and titles to comply with 2.1.5.3 of the NEC Style Manual.

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1124 of 2079 10/1/2015 11:02 AM


530.23 Branch Circuits.

A branch circuit of any size supplying one or more receptacles shall be permitted to supply stage set lighting loads. Section210.8 (B) shall be permitted but not required.


This comment retains the current requirements. No justification was made for increasing the requirements in this Article due to changes in 210.8(B).

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Submitter Full Name: Kenneth Vannice

Organization: [ Not Specified ]

Affilliation: USITT Engineering Commission

Street Address:

City:

State:

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1125 of 2079 10/1/2015 11:02 AM


540.20 Listing Requirements.

Projectors and enclosures for arc, xenon, and incandescent lamps and rectifiers, transformers, rheostats, and similar equipmentshall be listed and labeled .










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Affilliation: UL


1126 of 2079 10/1/2015 11:02 AM


540.32 Listing Requirements.

Projection equipment shall be listed and labeled .










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Affilliation: UL

Street Address:


1128 of 2079 10/1/2015 11:02 AM

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