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 13 Second Draft Meeting Agenda November 9-14, 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 Lawrence Ayer Public Comment No. 761 Section No. 445.6 (new) ALFIO TORRISI Public Comment No. 253 Section No. 445.10 GARY OLSON Public Comment No. 1215 Section No. 445.11 Timothy Windey Public Comment No. 1466 Section No. 445.11 submitted Public Comment No. 252 Section No. 445.11 GARY OLSON Public Comment No. 325 Section No. 445.11 TIMOTHY CROUSHORE Public Comment No. 508 Section No. 445.11 Joseph Harding Public Comment No. 509 Section No. 445.13(B) Joseph Harding Public Comment No. 254 Section No. 445.18(A) GARY OLSON Public Comment No. 784 Section No. 445.18(A) JOHN MASARICK Public Comment No. 1200 Section No. 445.18(B) Timothy Windey Public Comment No. 1494 Section No. 445.18(B) submitted Public Comment No. 510 Section No. 445.18(C) Joseph Harding Public Comment No. 1170 Section No. 445.20 JEFF JONAS Public Comment No. 512 Section No. 445.20 Joseph Harding Public Comment No. 837 Section No. 445.20 VINCE BACLAWSKI Public Comment No. 956 Section No. 445.20 James Dollard Public Comment No. 1144 Article 480 PHIL UNDERCUFFLER Public Comment No. 167 Section No. 480.1 Aaron Adamczyk Public Comment No. 1490 Section No. 480.2 Terminal. submitted Public Comment No. 1863 Section No. 695.4(B) submitted Public Comment No. 1412 Section No. 695.4(B)(1) submitted Public Comment No. 210 Section No. 695.4(B)(3) LAWRENCE FORSHNER Public Comment No. 963 Section No. 695.4(B)(3) James Dollard Public Comment No. 838 Section No. 695.6(A)(2) VINCE BACLAWSKI Public Comment No. 211 Section No. 695.6(G) LAWRENCE FORSHNER Public Comment No. 658 Section No. 695.14(E) Raymond Horner Public Comment No. 1201 Section No. 695.14(F) Timothy Windey Public Comment No. 1171 700.2, Luminaire, Directly ContMitchell Hefter Public Comment No. 666 700.2, Luminaire, Directly ContMICHAEL SHULMAN Public Comment No. 1666 Sections 700.3(B), 700.3(C), 700submitted Public Comment No. 347 Section No. 700.3(C) TIMOTHY CROUSHORE Public Comment No. 317 Section No. 700.3(F) DANIEL CARON Public Comment No. 788 Section No. 700.3(F) JOHN MASARICK Public Comment No. 1417 Section after 700.4 submitted Public Comment No. 982 Section No. 700.4 Phil Simmons Public Comment No. 1424 Section No. 700.4(A) submitted Public Comment No. 318 Section No. 700.4(B) DANIEL CARON Public Comment No. 1416 Section No. 700.5(C) submitted Public Comment No. 749 Section No. 700.5(E) JOHN MASARICK Public Comment No. 1129 Section No. 700.10(A) james dorsey Public Comment No. 395 Section No. 700.10(D) [ExcludinLAWRENCE FORSHNER Public Comment No. 603 Section No. 700.10(D)(1) DON TREMAGLIO Public Comment No. 786 Section No. 700.10(D)(1) JOHN MASARICK Public Comment No. 840 Section No. 700.10(D)(1) VINCE BACLAWSKI Public Comment No. 1203 Section No. 700.10(D)(3) Timothy Windey Public Comment No. 563 Section No. 700.12 [Excluding aJEFFREY FECTEAU Public Comment No. 431 Section No. 700.12(A) MICHAEL SHULMAN Public Comment No. 433 Section No. 700.12(F)(2) MICHAEL SHULMAN Public Comment No. 434 Section No. 700.12(F)(2) MICHAEL SHULMAN Public Comment No. 258 Section No. 700.32 GARY OLSON Public Comment No. 750 Section No. 701.5(D) JOHN MASARICK Public Comment No. 257 Section No. 701.6(D) GARY OLSON Public Comment No. 432 Section No. 701.12(A) MICHAEL SHULMAN Public Comment No. 435 Section No. 701.12(G) MICHAEL SHULMAN Public Comment No. 436 Section No. 701.12(G) MICHAEL SHULMAN Public Comment No. 259 Section No. 701.27 GARY OLSON Public Comment No. 124 Section No. 702.5 BRIAN BAUGHMAN Public Comment No. 751 Section No. 702.5 JOHN MASARICK Public Comment No. 256 Section after 702.6 GARY OLSON Public Comment No. 664 Section No. 702.7(C) ALFIO TORRISI Public Comment No. 547 Section No. 702.12(B) ALFIO TORRISI Public Comment No. 974 Section No. 702.12(C) Travis Foster Public Comment No. 1096 Article 706 MARVIN HAMON Public Comment No. 1187 Article 706 STEPHEN MCCLUER Public Comment No. 1195 Article 706, Part III STEPHEN MCCLUER Public Comment No. 1088 706.2, Battery MARVIN HAMON Public Comment No. 1712 706.2, Battery Terminal. submitted Public Comment No. 1478 706.2, Electrochemical Battery submitted Public Comment No. 1116 706.2, Electrolyte... to Energy SMARVIN HAMON Public Comment No. 1049 Section No. 706.2 ,Energy StoraSTEPHEN MCCLUER Public Comment No. 1482 Section No. 706, Part III. submitted Public Comment No. 1504 Section No. 706, Part III. submitted Public Comment No. 1480 Section No. 706.3 submitted Public Comment No. 1682 Section No. 706.3 submitted Public Comment No. 1115 Section No. 706.4 MARVIN HAMON Public Comment No. 1729 Section No. 706.3 submitted Public Comment No. 1557 Section No. 706.5 submitted Public Comment No. 1637 Section No. 706.5 submitted Public Comment No. 1725 Section No. 706.7 submitted Public Comment No. 1101 Section No. 706.7(B) MARVIN HAMON Public Comment No. 1102 Section No. 706.7(D) MARVIN HAMON Public Comment No. 1137 Section No. 706.7(D) PHIL UNDERCUFFLER Public Comment No. 1138 Section No. 706.7(D) PHIL UNDERCUFFLER Public Comment No. 1184 Section No. 706.7(D) STEPHEN MCCLUER Public Comment No. 1596 Section No. 706.7(D) submitted Public Comment No. 1714 Section No. 706.7(D) submitted Public Comment No. 1117 Section No. 706.7(E) MARVIN HAMON Public Comment No. 1119 Section No. 706.7(E) MARVIN HAMON Public Comment No. 1186 Section No. 706.7(E) STEPHEN MCCLUER Public Comment No. 1270 Section No. 706.7(E) submitted Public Comment No. 1271 Section No. 706.8 [Excluding ansubmitted Public Comment No. 1646 Section No. 706.8(B) submitted Public Comment No. 1273 Section No. 706.8(C) submitted Public Comment No. 314 Section No. 706.8(C) Richard Hockney Public Comment No. 842 Section No. 708.10(C)(2) VINCE BACLAWSKI Public Comment No. 1189 Section No. 706.10(A) STEPHEN MCCLUER Public Comment No. 1190 Section after 706.10(C) STEPHEN MCCLUER Public Comment No. 1191 Section after 706.10(E) STEPHEN MCCLUER Public Comment No. 1277 Section No. 706.10(D) submitted Public Comment No. 1139 Section No. 706.20(A) PHIL UNDERCUFFLER Public Comment No. 1715 Section No. 706.20(A) submitted Public Comment No. 1192 Section No. 706.20(A)(3) STEPHEN MCCLUER Public Comment No. 1121 Section No. 706.21 MARVIN HAMON Public Comment No. 1605 Sections 706.21(A), 706.21(B), submitted Public Comment No. 1112 Section No. 706.21(A) MARVIN HAMON Public Comment No. 1193 Section No. 706.21(A) STEPHEN MCCLUER Public Comment No. 1194 Section No. 706.21(B) STEPHEN MCCLUER Public Comment No. 1629 Section No. 706.21(C) submitted Public Comment No. 1196 Section No. 706.21(E) STEPHEN MCCLUER Public Comment No. 1280 Section No. 706.21(E) submitted Public Comment No. 1393 Section No. 706.21(E) submitted Public Comment No. 1281 Section No. 706.22 submitted Public Comment No. 1124 Section No. 706.23(B)(3) MARVIN HAMON Public Comment No. 315 Section No. 706.23(B)(3) Richard Hockney Public Comment No. 1140 Section No. 706.23(C) PHIL UNDERCUFFLER Public Comment No. 1720 Section No. 706.23(C) submitted Public Comment No. 1526 Section No. 706.30 submitted Public Comment No. 1283 Section No. 706.30(A) submitted Public Comment No. 1533 Section No. 706.30(A) submitted Public Comment No. 1507 Section No. 706.30(B) submitted Public Comment No. 1284 Section No. 706.30(D) submitted Public Comment No. 1512 Section No. 706.30(D) submitted Public Comment No. 1257 Section No. 706.30(E) submitted Public Comment No. 1286 Section No. 706.30(E) submitted Public Comment No. 1485 Section No. 706.30(E) submitted Public Comment No. 1736 Section No. 706.30(E) submitted Public Comment No. 1487 Section No. 706.34 [Excluding asubmitted Public Comment No. 1493 Section No. 706.34(B) submitted Public Comment No. 1498 Section No. 706.34(C) submitted Public Comment No. 1539 Section No. 706.35 submitted Public Comment No. 1197 Section No. 706.42 STEPHEN MCCLUER Public Comment No. 1554 Section No. 706.43 submitted Public Comment No. 1565 Section No. 706.44 submitted Public Comment No. 752 Section No. 708.24(E) JOHN MASARICK Public Comment No. 1174 Article 712 Timothy Croushore Public Comment No. 1675 Article 712 submitted Public Comment No. 1374 Section No. 712.2 submitted Public Comment No. 1016 Section No. 712.4 PHIL UNDERCUFFLER Public Comment No. 1086 Section No. 712.25(A) MARVIN HAMON Public Comment No. 839 Section No. 712.25(B) Andrew Yip Public Comment No. 1628 Section No. 712.25(B) submitted Public Comment No. 1017 Section No. 712.34 PHIL UNDERCUFFLER Public Comment No. 1019 Section No. 712.37 PHIL UNDERCUFFLER Public Comment No. 1662 Section No. 712.38 submitted Public Comment No. 841 Section No. 712.40(B) Andrew Yip Public Comment No. 1021 Section No. 712.40 PHIL UNDERCUFFLER Public Comment No. 841 Section No. 712.40(B) Andrew Yip Public Comment No. 1022 Section No. 712.55(A) PHIL UNDERCUFFLER Public Comment No. 1684 Section No. 712.57 submitted Public Comment No. 1375 Section No. 712.70 submitted Public Comment No. 1645 Section No. 712.72 submitted 10/6/2015 National Fire Protection Association Report 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 voltage up to 58 volts. In DC applications 60 volts is used to cover the entire range of float voltages. Article 110 110.27 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 200.7 (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 250.20(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 215.12(C)(2) Feeders Supplied from DirectCurrent Systems. Where a feeder is supplied from a dc system operating at more than 50 60 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 215.12(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 430.232 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: 430.233 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 430.232, 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 445.14 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 http://submittals.nfpa.org/TerraViewWeb/FormLaunch?id=/TerraView/Content/702014.ditamap/2/C1443033590366.xml&viewmode=nfpa/xslt/nfpaviewmode.xsl 2/6 10/6/2015 National Fire Protection Association Report 460.6 (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. 460.28(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 480.5 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 300.3 shall not apply to these conductors. 480.6 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 522.25 Ungrounded Control Circuits. Separately derived ac and 2wire 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 625 625.18 Interlock. Electric vehicle supply equipment shall be provided with an interlock that deenergizes the electric vehicle connector whenever the electrical connector is uncoupled from the electric vehicle. An interlock shall not be required for portable cordandplugconnected 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 50 60 volts dc. 625.19 Automatic DeEnergization of Cable. The electric vehicle supply equipment or the cableconnector combination of the equipment shall be provided with an automatic means to deenergize 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 cordandplugconnected 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 50 60 volts dc. 625.44 Electric Vehicle Supply Equipment Connection. Electric vehicle supply equipment shall be permitted to be cord and plugconnected to the premises wiring system in accordance with one of the following: (A) Connections to 125Volt, SinglePhase, 15 and 20Ampere Receptacle Outlets. Electric vehicle supply equipment intended for connection to nonlocking, 2pole,3wire groundingtype receptacle outlets rated at 125 V, single phase, 15 and 20 amperes or from a supply of less than 50 60 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 with625.15. Electric vehicle supply equipment receptacles rated at 125 volts, single phase, 15 and 20 amperes shall be marked in accordance with 625.15 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 50 60 volts http://submittals.nfpa.org/TerraViewWeb/FormLaunch?id=/TerraView/Content/702014.ditamap/2/C1443033590366.xml&viewmode=nfpa/xslt/nfpaviewmode.xsl 3/6 10/6/2015 National Fire Protection Association Report dc shall be marked in accordance with 625.15(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 669.6 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 50 60 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 50 60 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 110.27. 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. 720.1 Scope. This article covers installations operating at less than 50 volts, alternating current, or 60 volts direct current or alternating current. 720.11 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 ... 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: http://submittals.nfpa.org/TerraViewWeb/FormLaunch?id=/TerraView/Content/702014.ditamap/2/C1443033590366.xml&viewmode=nfpa/xslt/nfpaviewmode.xsl 4/6 10/6/2015 National Fire Protection Association Report 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 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 Item Public Input No. 3681NFPA 702014 [Global Input] Submitter Information Verification Submitter Full Name:Lawrence Ayer http://submittals.nfpa.org/TerraViewWeb/FormLaunch?id=/TerraView/Content/702014.ditamap/2/C1443033590366.xml&viewmode=nfpa/xslt/nfpaviewmode.xsl 5/6
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