NEC Code-Making Panel 11. Second Draft Meeting Agenda. November 5-7, San Diego, CA Introduction of Members and Guests

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1 National Fire Protection Association 1 Batterymarch Park, Quincy, MA Phone: Fax: NEC Code-Making Panel 11 Second Draft Meeting Agenda November 5-7, 2015 San Diego, CA Item No. Subject Call to Order Introduction of Members and Guests Approval of A2016 First Draft Meeting Minutes Review of Meeting Procedures and Revision Schedule Task Group Reports Process Public Comments and Develop Second Revisions Fire Protection Research Foundation Requests Old Business New Business Adjournment

2 Public Comment No Global Input submitted Public Comment No Section No submitted Public Comment No Section No Chad Kennedy Public Comment No. 409 Section No CHARLES POWELL Public Comment No. 630 Section No JOHN MASARICK Public Comment No Section No submitted Public Comment No. 833 Section No VINCE BACLAWSKI Public Comment No. 323 Section No TIMOTHY CROUSHORE Public Comment No. 834 Section No (G) VINCE BACLAWSKI Public Comment No. 413 Section No , Exception #2 (new GERALD DALEY Public Comment No Section No Chad Kennedy Public Comment No. 410 Section No CHARLES POWELL Public Comment No. 631 Section No JOHN MASARICK Public Comment No. 668 Section No (F) AMY CRONIN Public Comment No Section No submitted Public Comment No. 835 Section No VINCE BACLAWSKI Public Comment No Section No Chad Kennedy Public Comment No. 754 Section No (B) JOHN MASARICK Public Comment No Section No (A) Ron Chilton Public Comment No Section No (B) submitted Public Comment No Section No (B) [Excluding any SuRon Chilton Public Comment No. 309 Annex D, Example D8 JOHN MCCAMISH Public Comment No. 562 Annex D, Example D8 Rodney Jones

3 of /1/ :02 AM Public Comment No NFPA [ Global Input ] Article 100 Definitions Voltage, Nominal.. Informational Note No. 3: Certain 48-volt DC battery units have a charging float voltage up to 58 volts. In DC applications 60 volts is used to cover the entire range of float voltages. Article Guarding of Live Part (A) Live Parts Guarded Against Accidental Contact. Except as elsewhere required or permitted by this Code, live parts of electrical equipment operating at 50 volts AC/60 volts DC or more shall be guarded against accidental contact by approved enclosures or by any of the following means: Article 200 Use and Identification of Grounded Conductors (B) Circuits of Less Than 50 Volts AC. A conductor with white or gray color insulation or three continuous white stripes or having a marking of white or gray at the termination for circuits of less than 50 volts AC shall be required to be grounded only as required by (A). C) Circuits of 50 Volts AC or More. The use of insulation that is white or gray or that has three continuous white or gray stripes for other than a grounded conductor for circuits of 50 volts AC or more shall be permitted only as in (1) and (2). Article 215 Feeders (C)(2) Feeders Supplied from Direct-Current Systems. Where a feeder is supplied from a dc system operating at more than volts, each ungrounded conductor of 4 AWG or larger shall be identi?ed by polarity at all termination, connection, and splice points by marking tape, tagging, or other approved means; each ungrounded conductor of 6 AWG or smaller shall be identi?ed by polarity at all termination, connection, and splice points in compliance with (C)(2)(a) and (b). The identi?cation methods utilized for conductors originating within each feeder panelboard or similar feeder distribution equipment shall be documented in a manner that is readily available or shall be permanently posted at each feeder panelboard or similar feeder distribution equipment. Article 430 Motors, Motor Circuits, and Controllers Where Required. Exposed live parts of motors and controllers operating at 50 volts DC or more between terminals shall be guarded against accidental contact by enclosure or by location as follows: Guards for Attendants. Where live parts of motors or controllers operating at over 50 volts AC to ground are guarded against accidental contact only by location as specified in , and where adjustment or other attendance may be necessary during the operation of the apparatus, suitable insulating mats or platforms shall be provided so that the attendant cannot readily touch live parts unless standing on the mats or platforms. Article 445 Generators Protection of Live Parts. Live parts of generators operated at more than 50 volts AC/60 volts DC to ground shall not be exposed to accidental contact where accessible to unquali?ed persons. Article 460 Capacitors (A) Time of Discharge. The residual voltage of a capacitor shall be reduced to 50 volts DC, nominal, or less within 1 minute after the capacitor is disconnected from the source of supply (A) Means for Discharge. A means shall be provided to reduce the residual voltage of a capacitor to 50 volts DC or less within 5 minutes after the capacitor is disconnected from the source of supply. Article 480 Storage Batteries Overcurrent Protection for Prime Movers. Overcurrent protection shall not be required for conductors from a battery with a nominal voltage of 60 volts DC or less if the battery provides power for starting, ignition, or control of prime movers. Section shall not apply to these conductors DC Disconnect Methods. (A) Disconnecting Means. A disconnecting means shall be provided for all ungrounded conductors derived from a stationary battery system with a nominal voltage over 60 volts DC. A disconnecting means shall be readily accessible and located within sight of the battery system. Article 522 Control Systems for Permanent Amusement Attractions Ungrounded Control Circuits. Separately derived ac and 2-wire dc circuits and systems 50 volts AC/60 volts DC or greater shall be permitted to be ungrounded, provided that all the following conditions are met: Article Interlock. Electric vehicle supply equipment shall be provided with an interlock that de-energizes the electric vehicle connector whenever the electrical connector is uncoupled from the electric vehicle. An interlock shall not be required for portable cord-and-plug-connected electric vehicle supply equipment intended for connection to

4 of /1/ :02 AM receptacle outlets rated at 125 volts, single phase, 15 and 20 amperes. An interlock shall not be required for dc supplies less than volts dc Automatic De-Energization of Cable. The electric vehicle supply equipment or the cable-connector combination of the equipment shall be provided with an automatic means to de-energize the cable conductors and electric vehicle connector upon exposure to strain that could result in either cable rupture or separation of the cable from the electric connector and exposure of live parts. Automatic means to de-energize the cable conductors and electric vehicle connector shall not be required for portable cord-and-plug-connected electric vehicle supply equipment intended for connection to receptacle outlets rated at 125 volts, single phase, 15 and 20 amperes. An interlock shall not be required for dc supplies less than volts dc Electric Vehicle Supply Equipment Connection. Electric vehicle supply equipment shall be permitted to be cord and plug-connected to the premises wiring system in accordance with one of the following: (A) Connections to 125-Volt, Single-Phase, 15 and 20-Ampere Receptacle Outlets. Electric vehicle supply equipment intended for connection to non-locking, 2-pole,3-wire grounding-type receptacle outlets rated at 125 V, single phase, 15 and 20 amperes or from a supply of less than volts dc. (4) Supply Circuits. The supply circuit to the mechanical ventilation equipment shall be electrically interlocked with the electric vehicle supply equipment and shall remain energized during the entire electric vehicle charging cycle. Electric vehicle supply equipment shall be marked in accordance with Electric vehicle supply equipment receptacles rated at 125 volts, single phase, 15 and 20 amperes shall be marked in accordance with and shall be switched, and the mechanical ventilation system shall be electrically interlocked through the switch supply power to the receptacle. Electric vehicle supply equipment supplied from less than volts dc shall be marked in accordance with (C) and shall be switched, and the mechanical ventilation system shall be electrically interlocked through the switch supply power to the electric vehicle supply equipment. Article 669 Electroplating Wiring Methods. Conductors connecting the electrolyte tank equipment to the conversion equipment shall be in accordance with 669.6(A) and (B). (A) Systems Not Exceeding Volts Direct Current. Insulated conductors shall be permitted to be run without insulated support, provided they are protected from physical damage. Bare copper or aluminum conductors shall be permitted where supported on insulators. (B) Systems Exceeding Volts Direct Current. Insulated conductors shall be permitted to be run on insulated supports, provided they are protected from physical damage. Bare copper or aluminum conductors shall be permitted where supported on insulators and guarded against accidental contact up to the point of termination in accordance with A rticle 720 Circuits and Equipment Operating at Less than 50 Volts Circuits and Equipment Operating at Less Than 50 Volts AC/60 Volts DC Scope. This article covers installations operating at less than 50 volts, alternating current, or 60 volts direct current or alternating current Mechanical Execution of Work. Circuits operating at less than 50 volts AC or 60 volts DC shall be installed in a neat and workmanlike manner. Cables shall be supported by the building structure in such a manner that the cable will not be damaged by normal building use.type your content here... 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 (Co-Chair), 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:

5 of /1/ :02 AM 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 added 3. 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 48-volt 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 , 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 (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 (C) from 50 volts to 60 volts to correlate with section 210.5(C)(2). 5. In section , 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 and volts was changed to 60 volts since these pertain to DC batteries and DC systems. 7. In section , 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 (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 and section have been modified to clarify that this Article applies to both systems with the corresponding voltage. Public Input No NFPA [Global Input] Submitter Full Name: Lawrence Ayer Organization: Biz Com Electric, Inc. Affilliation: IEC Submittal Date: Wed Sep 23 14:39:50 EDT 2015

6 99 of /1/ :02 AM Public Comment No NFPA [ Section No ] Short-Circuit Current Rating. An industrial control panel shall not be installed where the available fault current exceeds its short-circuit current rating as marked in accordance with (4). The Correlating Committee directs that this First Revision be reviewed by the panel with regard to similar text in The panel shall consider reviewing the proper use of the terms fault current and short circuit current. First Revision No NFPA [New Section after ] Submitter Full Name: CC on NEC-AAC Organization: NFPA Submittal Date: Tue Sep 29 08:49:03 EDT 2015

7 00 of /1/ :02 AM Public Comment No NFPA [ Section No ] Available Fault Current. When an industrial control panel is required to be marked with a short circuit current rating in accordance with (4), the available short circuit current at the industrial control panel and the date the short circuit current calculation was performed shall be documented and made available to those authorized to inspect the installation. While it is certainly important for industrial control panels to have an adequate short circuit current rating, this may be said for ALL electrical equipment. This is clearly covered in Sections and This requirement should be in Article 110 and not proliferated throughout the Code as it is a fundamental requirement that applies to all equipment. First Revision No NFPA [New Section after ] Submitter Full Name: Chad Kennedy Organization: Schneider Electric Submittal Date: Wed Sep 23 10:22:08 EDT 2015

8 01 of /1/ :02 AM Public Comment No. 409-NFPA [ Section No ] Available Fault Current. When an industrial control panel is required to be marked with a short circuit current rating in accordance with (4), the available short circuit fault current at the industrial control panel and the date the short circuit fault current calculation was performed shall be documented and made available to those authorized to inspect the installation. The wording change is suggested for consistency with code language in sections 110.9, , etc and with this section's own title. Public Input No NFPA [New Section after ] Public Input No NFPA [New Section after ] Submitter Full Name: CHARLES POWELL Organization: EASTMAN CHEMICAL COMPANY Affilliation: American Chemistry Council Submittal Date: Fri Aug 14 08:04:22 EDT 2015

9 02 of /1/ :02 AM Public Comment No. 630-NFPA [ Section No ] Available Fault Current. When an industrial control panel is required to be marked with a short circuit current rating in accordance with (4), the available short circuit current at the industrial control panel and the date the short circuit current calculation was performed shall be documented and made available to those authorized to inspect the installation. IEC's position is to delete (FR 3002) The code already requires that equipment be installed according to available fault current, so adding this requirement is redundant. The installer/supplier already has the responsibility/liability to install the proper equipment based on the characteristics of the system. This proposal puts too much liability on the contractor/supplier because after installation various factors can change which will affect the available fault current. Feeders can be reworked, transformers can be changed with different impedance values, motor loads can be added to the existing system and similar factors that can change the available fault current. In the case of a lawsuit, the installer will have the burden of proof that the installation was done according to code and would result in unnecessary costs for defending an installation that was installed correctly, but that had variables change that are out of their control. A better proposal would be to require the owner to relabel the equipment after any alteration to the system. Related Public Comments for This Document Related Comment Public Comment No. 631-NFPA [Section No ] Public Comment No. 748-NFPA [Section No (D)(2)] Public Comment No. 749-NFPA [Section No (E)] Public Comment No. 750-NFPA [Section No (D)] Public Comment No. 751-NFPA [Section No ] Public Comment No. 752-NFPA [Section No (E)] Public Comment No. 755-NFPA [Section No (2)] Public Comment No. 754-NFPA [Section No (B)] First Revision No NFPA [New Section after ] Relationship Submitter Full Name: JOHN MASARICK Organization: Independent Electrical Contractors, Inc. Affilliation: Independent Electrical Contractors, Inc. Submittal Date: Sat Sep 12 19:06:41 EDT 2015

10 03 of /1/ :02 AM Public Comment No NFPA [ Section No ] Marking. An industrial control panel shall be marked with the following information that is plainly visible after installation: (1) Manufacturer's name, trademark, or other descriptive marking by which the organization responsible for the product can be identified. (2) Supply voltage, number of phases, frequency, and full-load current for each incoming supply circuit. (3) Industrial control panels supplied by more than one electrical source such that more than one disconnecting means is required to disconnect all circuits within the control panel shall be marked to indicate that more than one disconnecting means is required to de-energize the equipment. The location of the means necessary to disconnect all circuits 50-volts and over shall be documented and available. (4) Short-circuit current rating of the industrial control panel based on one of the following: a. Short-circuit current rating of a listed and labeled assembly b. Short-circuit current rating established utilizing an approved method Informational Note: ANSI/UL 508A, Standard for Industrial Control Panels, Supplement SB, is an example of an approved method. Exception to (4): Short-circuit current rating markings are not required for industrial control panels containing only control circuit components. (5) If the industrial control panel is intended as service equipment, it shall be marked to identify it as being suitable for use as service equipment. (6) Electrical wiring diagram or the identification number of a separate electrical wiring diagram or a designation referenced in a separate wiring diagram. (7) An enclosure type number shall be marked on the industrial control panel enclosure. The Correlating Committee directs that the phrase 50-volts and over be changed to 50 volts or more to correlate with other parts of the Code. First Revision No NFPA [Section No ] Submitter Full Name: CC on NEC-AAC Organization: NFPA Submittal Date: Tue Sep 29 08:49:56 EDT 2015

11 04 of /1/ :02 AM Public Comment No. 833-NFPA [ Section No ] Marking. An industrial control panel shall be marked with the following information that is plainly visible after installation: (1) Manufacturer's name, trademark, or other descriptive marking by which the organization responsible for the product can be identified. (2) Supply voltage, number of phases, frequency, and full-load current for each incoming supply circuit. (3) Industrial control panels supplied by more than one electrical source such that source where more than one disconnecting means is required to disconnect all circuits 50-volts and over within the control panel shall be marked to indicate that more than one disconnecting means is required to de-energize the equipment. The location of the means necessary to disconnect all circuits 50-volts and over shall be documented and available. (4) Short-circuit current rating of the industrial control panel based on one of the following: (5) Short-circuit current rating of a listed and labeled assembly (6) Short-circuit current rating established utilizing an approved method Informational Note: ANSI/UL 508A, Standard for Industrial Control Panels, Supplement SB, is an example of an approved method. Exception to (4): Short-circuit current rating markings are not required for industrial control panels containing only control circuit components. (7) If the industrial control panel is intended as service equipment, it shall be marked to identify it as being suitable for use as service equipment. (8) Electrical wiring diagram or the identification number of a separate electrical wiring diagram or a designation referenced in a separate wiring diagram. (9) An enclosure type number shall be marked on the industrial control panel enclosure. No changes item (4) The revised text clarifies that the marking requirement only applies to circuits 50-volts and over. First Revision No NFPA [Section No ] Submitter Full Name: VINCE BACLAWSKI Organization: NEMA Submittal Date: Mon Sep 21 10:52:59 EDT 2015

12 52 of /1/ :02 AM Public Comment No. 323-NFPA [ Section No ] Scope. This article covers motors, motor branch-circuit and feeder conductors and their protection, motor overload protection, motor control circuits, motor controllers, and motor motor control centers and adjustable-speed drive systems. Figure Article 430 Contents. Informational Note No. 1: Installation requirements for motor control centers are covered in (E). Air-conditioning and refrigerating equipment are covered in Article 440. Informational Note No. 2: Figure is for information only. Adding adjustable-speed drive systems to the scope of Article 430. Adjustable-speed drive systems are unique to the list of other items contained in the Scope of Article 430. Public Input No NFPA [Section No ] Submitter Full Name: TIMOTHY CROUSHORE Organization: FIRSTENERGY Affilliation: FirstEnergy

13 54 of /1/ :02 AM Public Comment No. 834-NFPA [ Section No (G) ] (G) Conductors for Small Motors. Conductors for small motors shall not be smaller than 14 AWG unless otherwise permitted in (G)(1) or (G)(2). (1) 18 AWG Copper. Where 18 AWG individual copper conductors installed in a cabinet or enclosure, 18 AWG individual copper conductors, copper conductors that are part of a jacketed multiconductor cable assembly, or copper conductors in a flexible cord shall be permitted, under either of the following sets of conditions: (1) The circuit supplies a motor with a full-load current rating, as determined by 430.6(A)(1), of greater than 3.5 amperes, and less than or equal to 5 amperes, and all the following conditions are met: (2) The circuit is protected in accordance with (3) The circuit is provided with maximum Class 10 or Class 10A overload protection in accordance with (4) Overcurrent protection is provided in accordance with 240.4(D)(1)(2). (5) The circuit supplies a motor with a full-load current rating, as determined by 430.6(A)(1), of 3.5 amperes or less, and all the following conditions are met: (6) The circuit is protected in accordance with (7) The circuit is provided with maximum Class 20 overload protection in accordance with (8) Overcurrent protection is provided in accordance with 240.4(D)(1)(2). (2) 16 AWG Copper. Where 16 AWG individual copper conductors installed in a cabinet or enclosure, 16 AWG individual copper conductors, copper conductors that are part of a jacketed multiconductor cable assembly, or copper conductors in a flexible cord shall be permitted under either of the following sets of conditions: (1) The circuit supplies a motor with a full-load current rating, as determined by 430.6(A)(1), of greater than 5.5 amperes, and less than or equal to 8 amperes, and all the following conditions are met: (2) The circuit is protected in accordance with (3) The circuit is provided with maximum Class 10 or Class 10A overload protection in accordance with (4) Overcurrent protection is provided in accordance with 240.4(D)(2)(2). (5) The circuit supplies a motor with a full-load current rating, as determined by 430.6(A)(1), of 5.5 amperes or less, and all the following conditions are met: (6) The circuit is protected in accordance with (7) The circuit is provided with maximum Class 20 overload protection in accordance with (8) Overcurrent protection is provided in accordance with 240.4(D)(2)(2). Additional Proposed Changes File Name Description Approved _G_FR1357-1is.pdf (G) document No change to the other items of the sublisting. The proposed text is identical to Public Input No which should have been accepted as a First Revision to allow multiconductor cables and cords to leave the enclosure. The installation concerns expressed in the Code panel comment regarding potential damage to multiconductor cables and cords leaving the enclosure are adequately addressed in the construction specifications, wiring methods, and restrictions in Chapters 3 and 4. Public Input No NFPA [Section No (G)]

14 NFPA Public Comment Form (For Proposing Revisions to the First Draft) NOTE: All Public Comments must be received by 5:00 pm EST/EDST on the published Public Comment Paper Submission Closing Date. For further information on the standards-making process, please contact the Codes and Standards Administration at or visit For technical assistance, please call NFPA at FOR OFFICE USE ONLY Log #: CMP 11 Date Rec d: Date Name Vince Baclawski Tel. No Company National Electrical Manufacturers Association (NEMA) Street Address 1300 North 17 th Street, Suite 900 City Rosslyn State VA Zip Please indicate organization represented (if any) NEMA 1. (a) NFPA Document Title National Electrical Code NFPA No. Year 2017 (b) Section/Paragraph 2. Identify First Revision and/or Input to which Comment relates: No(s). Section No (G) Public Input 1357-NFPA [ Section No (G) ] 2. Public Comment Recommends (check one): new text revised text deleted text 3. Proposed Text of Public Comment (include proposed new or revised wording, or identification of wording to be deleted): [Note: Proposed text should be in legislative format showing proposed changes to the First Draft; i.e., use underscore to denote wording to be inserted (inserted wording) and strike-through to denote wording to be deleted (deleted wording).] (G) Conductors for Small Motors. Conductors for small motors shall not be smaller than 14 AWG unless otherwise permitted in (G)(1) or (G)(2). (1) 18 AWG Copper. Where installed in a cabinet or enclosure, 18 AWG individual copper conductors installed in a cabinet or enclosure, copper conductors that are part of a jacketed multiconductor cable assembly, or copper conductors in a flexible cord shall be permitted, under either of the following sets of conditions: (1) The circuit supplies a motor with a full-load current rating, as determined by 430.6(A)(1), of greater than 3.5 amperes, and less than or equal to 5 amperes, and all the following conditions are met: a. The circuit is protected in accordance with b. The circuit is provided with maximum Class 10 or Class 10A overload protection in accordance with c. Overcurrent protection is provided in accordance with 240.4(D)(1)(2). (2) The circuit supplies a motor with a full-load current rating, as determined by 430.6(A)(1), of 3.5 amperes or less, and all the following conditions are met: a. The circuit is protected in accordance with b. The circuit is provided with maximum Class 20 overload protection in accordance with c. Overcurrent protection is provided in accordance with 240.4(D)(1)(2). (2) 16 AWG Copper. Where installed in a cabinet or enclosure,16 AWG individual copper conductors installed in a cabinet or enclosure, copper conductors that are part of a jacketed multiconductor cable assembly, or copper conductors in a flexible cord shall be permitted under either of the following sets of conditions: (1) The circuit supplies a motor with a full-load current rating, as determined by 430.6(A)(1), of greater than 5.5 amperes, and less than or equal to 8 amperes, and all the following conditions are met: a. The circuit is protected in accordance with b. The circuit is provided with maximum Class 10 or Class 10A overload protection in accordance with c. Overcurrent protection is provided in accordance with 240.4(D)(2)(2). (2) The circuit supplies a motor with a full-load current rating, as determined by 430.6(A)(1), of 5.5 amperes or less, and all the following conditions are met: a. The circuit is protected in accordance with b. The circuit is provided with maximum Class 20 overload protection in accordance with

15 c. Overcurrent protection is provided in accordance with 240.4(D)(2)(2). 4. : (Note: State the problem that would be resolved by your recommendation; give the specific reason for your Public Comment, including copies of tests, research papers, fire experience, etc. If more than 200 words, it may be abstracted for publication.) The proposed text is identical to Public Input No which should have been accepted as a First Revision to allow multiconductor cables and cords to leave the enclosure. The installation concerns expressed in the Code panel comment regarding potential damage to multiconductor cables and cords leaving the enclosure are adequately addressed in the construction specifications, wiring methods, and restrictions in Chapters 3 and Copyright Assignment (a) I am the author of the text or other material (such as illustrations, graphs) proposed in the Public Comment. (b) Some or all of the text or other material proposed in this Public Comment was not authored by me. Its source is as follows: (please identify which material and provide complete information on its source) I hereby grant and assign to the NFPA all and full rights in copyright in this Public Comment (including both the Proposed Text and the Statement of Problem and Substantiation). I understand that I acquire no rights in any publication of NFPA in which this Public Comment in this or another similar or analogous form is used. Except to the extent that I do not have authority to make an assignment in materials that I have identified in (b) above, I hereby warrant that I am the author of this Public Comment and that I have full power and authority to enter into this assignment. Signature (Required) PLEASE USE SEPARATE FORM FOR EACH PUBLIC COMMENT To: Secretary, Standards Council National Fire Protection Association 1 Batterymarch Park Quincy, MA OR Fax to: (617) OR to: publicinput_comments@nfpa.org 8/20/2015

16 56 of /1/ :02 AM Public Comment No. 413-NFPA [ New Section after ] TITLE OF NEW CONTENT Type your content here...exception #2 Installation may comply with (B) (5) An outdoor feeder tap can be of unlimited length if it comply s with all of the conditions of (B)(5) unless it is a motor short circuit and ground fault protective device as in If the motor short circuit and ground fault protective device was in a panel containing a main it would be OK. It should be Acceptable to supply a Motor circuit with a tap conductor governed by the rules of (B)(5) when it feeds a motor short circuit and ground fault protective device. First Revision No NFPA [Section No (F)] Submitter Full Name: GERALD DALEY Organization: Daley Electric Company Submittal Date: Mon Aug 17 17:32:49 EDT 2015

17 58 of /1/ :02 AM Public Comment No NFPA [ Section No ] Available Fault Current. The available short circuit current at the motor control center and the date the short circuit current calculation was performed shall be documented and made available to those authorized to inspect the installation. While it is certainly important for motor control centers to have an adequate short circuit current rating, this may be said for ALL electrical equipment. This is clearly covered in Sections and This requirement should be in Article 110 and not proliferated throughout the Code as it is a fundamental requirement that applies to all equipment. First Revision No NFPA [New Section after ] Submitter Full Name: Chad Kennedy Organization: Schneider Electric Submittal Date: Wed Sep 23 10:31:17 EDT 2015

18 59 of /1/ :02 AM Public Comment No. 410-NFPA [ Section No ] Available Fault Current. The available short circuit fault current at the motor control center and the date the short circuit fault current calculation was performed shall be documented and made available to those authorized to inspect the installation. The wording change is suggested for consistency with code language in sections 110.9, , etc and with this section's own title. Public Input No NFPA [Section No (A)] Public Input No NFPA [New Section after ] Submitter Full Name: CHARLES POWELL Organization: EASTMAN CHEMICAL COMPANY Affilliation: American Chemistry Council Submittal Date: Fri Aug 14 08:15:36 EDT 2015

19 60 of /1/ :02 AM Public Comment No. 631-NFPA [ Section No ] Available Fault Current. The available short circuit current at the motor control center and the date the short circuit current calculation was performed shall be documented and made available to those authorized to inspect the installation. IEC's position is to delete (FR 3016) The code already requires that equipment be installed according to available fault current, so adding this requirement is redundant. The installer/supplier already has the responsibility/liability to install the proper equipment based on the characteristics of the system. This proposal puts too much liability on the contractor/supplier because after installation various factors can change which will affect the available fault current. Feeders can be reworked, transformers can be changed with different impedance values, motor loads can be added to the existing system and similar factors that can change the available fault current. In the case of a lawsuit, the installer will have the burden of proof that the installation was done according to code and would result in unnecessary costs for defending an installation that was installed correctly, but that had variables change that are out of their control. A better proposal would be to require the owner to relabel the equipment after any alteration to the system. Related Public Comments for This Document Related Comment Public Comment No. 748-NFPA [Section No (D)(2)] Public Comment No. 749-NFPA [Section No (E)] Public Comment No. 750-NFPA [Section No (D)] Public Comment No. 751-NFPA [Section No ] Public Comment No. 752-NFPA [Section No (E)] Public Comment No. 754-NFPA [Section No (B)] Public Comment No. 755-NFPA [Section No (2)] Public Comment No. 630-NFPA [Section No ] First Revision No NFPA [New Section after ] Relationship Submitter Full Name: JOHN MASARICK Organization: Independent Electrical Contractors, Inc. Affilliation: Independent Electrical Contractors, Inc. Submittal Date: Sat Sep 12 19:27:32 EDT 2015

20 61 of /1/ :02 AM Public Comment No. 668-NFPA [ Section No (F) ] (F) Cord-and-Plug- or Attachment Fitting- Connected Motors. For a cord-and-plug-connected motor, an attachment fitting-connected motor, a horsepower-rated attachment plug and receptacle, flanged surface inlet and cord connector, attachment fitting having ratings no less than the motor or attachment plug and cord connector having ratings no less than the motor ratings shall be permitted to serve as the disconnecting means. Horsepower-rated attachment plugs or attachment fittings, flanged surface inlets, receptacles, or cord connectors shall not be required for cord-and-plug-connected appliances in accordance with , room air conditioners in accordance with , ceiling-suspended (paddle) fans in accordance with (E) or portable motors rated 1 3 hp or less. New text was proposed and approved for (E) by CMP 9 in FR 2411 that read as follows: (E) Separable Attachment Fittings. Outlet boxes shall be permitted to support listed locking support and mounting receptacles used in combination with compatible attachment fittings designed for the support of equipment covered within and subject to all weight and orientation limits contemplated by the listing. Where such fittings are used, the equipment mounted shall comply with (A) through (D) as applicable. Where the supporting receptacle is installed within a box, it shall be included in the fill calculation covered in (B) (4). The text needs to be modified in (F) to assure that an attachment fitting and receptacle combination that is load-makeand-load-break rated is recognized as a suitable disconnecting means for ceiling-suspended (paddle) fan motors. First Revision No NFPA [Section No ] Public Input No NFPA [Section No (F)] Submitter Full Name: AMY CRONIN Organization: STRATEGIC CODE SOLUTIONS LLC Affilliation: Safety Quick Lighting and Fans Corp. Submittal Date: Tue Sep 15 15:45:17 EDT 2015

21 62 of /1/ :02 AM Public Comment No NFPA [ Section No ] Single Machine. An air-conditioning or refrigerating system shall be considered to be a single machine under the provisions of , Exception No. 1, and , Exception. The motors shall be permitted to be located remotely from each other. The Correlating Committee directs that this First Revision be reviewed by the panel with regard to (B). The panel shall consider reviewing the proper use of the terms fault current and short circuit current. This First Revision No NFPA [New Section after 440.8] Submitter Full Name: CC on NEC-AAC Organization: NFPA Submittal Date: Tue Sep 29 09:31:07 EDT 2015

22 63 of /1/ :02 AM Public Comment No. 835-NFPA [ Section No ] Grounding and Bonding. Where multimotor and combination-load equipment is installed outdoors on a roof, an equipment grounding conductor of the wire type shall be installed in outdoor portions of metallic raceway systems that use non-threaded fittings. We agree with the negative comments submitted by the UL representative that all UL certified metallic conduit, including EMT, is evaluated for its ability to bond the conduit to the connecting fittings and that the requirement for additional grounding and bonding is a belts and suspenders approach that will not solve the issue of poor workmanship or ineffective maintenance practices. The Panel Statement that the use of non-threaded conduit systems on rooftops supplying HVACR equipment are subject to movement and damage that results in separation of non-threaded conduit or tubing resulting in loss of equipment grounding unless a wire type equipment ground is provided is far-reaching and inaccurate. Not all installations are subjected to the same conditions. A properly installed, code-compliant and properly maintained system will take into account code requirements for protection against physical damage, use of expansion fittings, good workmanship, etc The installation of a supplemental grounding conductor is not a panacea for not following current code requirements. First Revision No NFPA [New Section after 440.8] Submitter Full Name: VINCE BACLAWSKI Organization: NEMA Submittal Date: Mon Sep 21 11:37:08 EDT 2015

23 64 of /1/ :02 AM Public Comment No NFPA [ Section No ] Short-Circuit Current Rating. (A) Installation. Motor controllers of multimotor and combination-load equipment shall not be installed where the available fault current exceeds its short-circuit current rating as marked in accordance with 440.4(B). (B) Documentation. When motor controllers or industrial control panels of multimotor and combination load equipment are required to be marked with a short circuit current rating, the available short circuit current and the date the short circuit current calculation was performed shall be documented and made available to those authorized to inspect the installation. While it is certainly important for air conditioning and refrigerating equipment to have an adequate short circuit current rating, this may be said for ALL electrical equipment. This is clearly stated in Section If this new section is added to the Code, it is likely that similar sections will be proposed to be added to numerous other articles. This requirement should be in Article 110 and not proliferated throughout the Code as it is a fundamental requirement that applies to all equipment. If AHJs are having difficulty determining whether or not HVAC equipment is properly rated, then they must be having the same difficulty for other equipment as well. That is the type of situation Article 110 is intended to address. The correlating committee may wish to review this language for consistency with other electrical equipment articles throughout the NEC. First Revision No NFPA [New Section after 440.8] Submitter Full Name: Chad Kennedy Organization: Schneider Electric Submittal Date: Wed Sep 23 10:27:03 EDT 2015

24 65 of /1/ :02 AM Public Comment No. 754-NFPA [ Section No (B) ] (B) Documentation. When motor controllers or industrial control panels of multimotor and combination load equipment are required to be marked with a short circuit current rating, the available short circuit current and the date the short circuit current calculation was performed shall be documented and made available to those authorized to inspect the installation. IEC's position is to delete (FR 3006) The code already requires that equipment be installed according to available fault current, so adding this requirement is redundant. The installer/supplier already has the responsibility/liability to install the proper equipment based on the characteristics of the system. This proposal puts too much liability on the contractor/supplier because after installation various factors can change which will affect the available fault current. Feeders can be reworked, transformers can be changed with different impedance values, motor loads can be added to the existing system and similar factors that can change the available fault current. In the case of a lawsuit, the installer will have the burden of proof that the installation was done according to code and would result in unnecessary costs for defending an installation that was installed correctly, but that had variables change that are out of their control. A better proposal would be to require the owner to relabel the equipment after any alteration to the system. Related Public Comments for This Document Related Comment Public Comment No. 630-NFPA [Section No ] Public Comment No. 748-NFPA [Section No (D)(2)] Public Comment No. 749-NFPA [Section No (E)] Public Comment No. 750-NFPA [Section No (D)] Public Comment No. 751-NFPA [Section No ] Public Comment No. 752-NFPA [Section No (E)] Public Comment No. 755-NFPA [Section No (2)] Public Comment No. 631-NFPA [Section No ] Public Comment No. 748-NFPA [Section No (D)(2)] First Revision No NFPA [New Section after 440.8] Relationship Submitter Full Name: JOHN MASARICK Organization: Independent Electrical Contractors, Inc. Affilliation: Independent Electrical Contractors, Inc. Submittal Date: Fri Sep 18 20:48:00 EDT 2015

25 66 of /1/ :02 AM Public Comment No NFPA [ Section No (A) ] (A) Rating or Setting for Individual Motor-Compressor. The motor-compressor branch-circuit short-circuit and ground-fault protective device shall be capable of carrying the starting current of the motor, with a minimum rating of 115% of the full-load current, or in accordance with ( A)(1). A protective device having a rating or setting not exceeding 175 percent of the motor-compressor rated-load current or branchcircuit selection current, whichever is greater, shall be permitted, provided that, where the protection specified is not sufficient for the starting current of the motor, the rating or setting shall be permitted to be increased but shall not exceed 225 percent of the motor rated-load current or branch-circuit selection current, whichever is greater. Exception: The rating of the branch-circuit short-circuit and ground-fault protective device shall not be required to be less than 15 amperes. It was not the intent of the Public Input submitted to require the rating of the branch-circuit short-circuit and ground fault protective device to be set at the maximum level stated on the Manufacturer's nameplate labels, as was suggested in the Panel's substantiation. Certainly smaller rated devices may start motor-compressors without damage, however, it has become increasingly the habit to install the smallest device possible. This leaves the decision as to what that minimum level permitted to carry the starting load of the equipment should be, after installation, up to the discretion of the Authority Having Jurisdiction. The minimum setting required by (A)(1) is not 175% as is generally the marked rating on the Manufacturer's nameplate. Public Input No NFPA [Section No (A)] Submitter Full Name: Ron Chilton Organization: North Carolina Code Clearing Committee Submittal Date: Wed Sep 23 15:32:11 EDT 2015

26 67 of /1/ :02 AM Public Comment No NFPA [ Section No (B) [Excluding any Sub-Sections] ] The equipment branch-circuit short-circuit and ground-fault protective device shall be capable of carrying the starting current of the equipment with a minimum rating of 115% of the full-load current, or in accordance with ( A )(1). Where the hermetic refrigerant motor-compressor is the only load on the circuit, the protection shall comply with (A). Where the equipment incorporates more than one hermetic refrigerant motor-compressor or a hermetic refrigerant motor-compressor and other motors or other loads, the equipment short-circuit and ground-fault protection shall comply with and (B)(1) and (B)(2). It was not the intent of the Public Input submitted to require the rating of the branch-circuit short-circuit and ground fault protective device to be set at the maximum level stated on the Manufacturer's nameplate labels, as was suggested in the Panel's substantiation. Certainly smaller rated devices may start motor-compressors without damage, however, it has become increasingly the habit to install the smallest device possible. This leaves the decision as to what that minimum level permitted to carry the starting load of the equipment should be, after installation, up to the discretion of the Authority Having Jurisdiction. The minimum setting required by (A)(1) is not 175% as is generally the marked rating on the Manufacturer's nameplate. Public Input No NFPA [Section No (B) [Excluding any Sub-Sections]] Submitter Full Name: Ron Chilton Organization: North Carolina Code Clearing Committee Submittal Date: Wed Sep 23 16:22:28 EDT 2015