MEMORANDUM. National Fire Protection Association

Transcription

1 National Fire Protection Association 1 Batterymarch Park, Quincy, MA Phone: Fax: MEMORANDUM To: NEC Code-Making Panel 5 From: Kimberly Shea, Project Administrator Date: April 16, 2015 Subject: NEC First Draft TC FINAL Ballot Results (A2016) According to the final ballot results, all First Revisions received the necessary affirmative votes to pass ballot with the exception of FR As a result, FR 1240 has been redesignated as a Committee Input and is attached for your informaiton. 17 Members Eligible to Vote 0 Members Ballots Not Returned 13 Members voted Affirmative with Comment on one or more Revisions (Beckstrand, Brett Jr., Bowmer, Edwards, J. Harding, S. Harding, Mello, Mohla, O Meara, Palmieri, Phillips, Porter, Simmons) 11 Members voted Negative on one or more Revisions (Beckstrand, Brett Jr., Dobrowsky, J. Harding, S. Harding, Mohla, O Meara, Palmieri, Phillips, Simmons Sasso) 0 Abstentions on one or more Revisions The attached report shows the number of affirmative, negative, and abstaining votes as well as the explanation of the vote for each first revision. There are two criteria necessary for each first/second revision to pass ballot: (1) simple majority and (2) affirmative 2 / 3 vote. The mock examples below show how the calculations are determined. (1) Example for Simple Majority: Assuming there are 20 vote eligible committee members, 11 affirmative votes are required to pass ballot. (Sample calculation: 20 members eligible to vote 2 = = 11) (2) Example for Affirmative 2 / 3 : Assuming there are 20 vote eligible committee members and 1 member did not return their ballot and 2 members abstained, the number of affirmative votes required would be 12. (Sample calculation: 20 members eligble to vote 1 not returned 2 abstentions = 17 x 0.66 = = 12 ) As always please feel free to contact me if you have any questions.

2 First Revision No NFPA [ Section No (D) ] (D) Grounded Conductors of Different Systems. Where grounded conductors of different systems are installed in the same raceway, cable, box, auxiliary gutter, or other type of enclosure, each grounded conductor shall be identified by system. Identification that distinguishes each system grounded conductor shall be permitted by one of the following means: (1) One system grounded conductor shall have an outer covering conforming to 200.6(A) or (B). (2) The grounded conductor(s) of other systems shall have a different outer covering conforming to 200.6(A) or 200.6(B) or by an outer covering of white or gray with a readily distinguishable colored stripe other than green running along the insulation. (3) Other and different means of identification as allowed by 200.6(A) or (B) that will shall distinguish each system grounded conductor. The means of identification shall be documented in a manner that is readily available or shall be permanently posted where the conductors of different systems originate. Submitter Information Verification Submitter Full Name: CMP 5 Organization: [ Not Specified ] Street Address: City: State: Zip: Submittal Date: Thu Jan 15 16:08:04 EST 2015 Committee Statement Committee Statement: Response Message: Deletion of the word as between the identification and allowed was done to comply with section of the NEC Style Manual Public Input No NFPA [Section No (D)] Ballot Results This item has passed ballot 17 Eligible Voters 0 Not Returned 16 Affirmative All 1 Affirmative with Comments 0 Negative with Comments 0 Abstention Affirmative All Beckstrand, Gary A. Bowmer, Trevor N. Brett, Jr., Martin J. of 115 4/16/2015 9:59 AM

3 Dobrowsky, Paul Harding, Joseph Harding, G. Scott Helfrich, William J. Mello, Charles F. Mohla, Daleep C. O'Meara, Mike Palmieri, Charles J. Philips, Nathan Porter, Christine T. Sasso, Nick Simmons, Phil Steinman, Gregory J. Affirmative with Comment Edwards, Timothy Summaries of discrepancies. FR (A)(1) Two issues: First, the panel statement is not correctly stated. This section is for grounded systems, the panel statement is for the ungrounded section. Second the version of the standard referenced is the 2017 Edition. Question arises as to the validity of using that date. It will be published prior to the publication of the NEC, but is not yet published. Also note identical informational note and reference accepted as FR 1204 by the committee did not show up in TerraView. The panel statement in TerraView for FR (B)(1) which would be for ungrounded systems. FR (B)(1) Does not show up in TerraView. It is an identical informational note, applicable to ungrounded systems. Same issue with the date of the standard NFPA 780 FR (C)(1) The word Cable is not underlined it needs to be underlined. Note also misspelled word (ables) in panel statement, it should be cables FR (C)(2) The words or Cable are not underlined they need to be underlined of 115 4/16/2015 9:59 AM

4 of 115 4/16/2015 9:59 AM First Revision No NFPA [ Section No ]

5 of 115 4/16/2015 9:59 AM Application of Other Articles.

6 of 115 4/16/2015 9:59 AM For other articles applying to particular cases of installation of conductors and equipment, grounding and bonding requirements are identified in Table that are in addition to, or modifications of, those of this article. Table Additional Grounding and Bonding Requirements Conductor/Equipment Article Section Agricultural buildings and Audio signal processing, amplification, and reproduction equipment Branch circuits 210.5, 210.6, Cablebus Cable trays Capacitors , Circuits and equipment operating at less than 50 volts 720 Communications circuits 800 Community antenna television and radio distribution systems Conductors for general wiring 310 Cranes and hoists 610 Electrically driven or controlled irrigation machines Electric signs and outline lighting 600 Electrolytic cells 668 Elevators, dumbwaiters, escalators, moving walks, wheelchair lifts, and stairway chairlifts , , , (C), , , , Fixed electric heating equipment for pipelines and vessels , Fixed outdoor electric deicing and snow-melting equipment Flexible cords and cables , Floating buildings 553.8, , Grounding-type receptacles, adapters, cord connectors, and attachment plugs Hazardous (classified) locations Health care facilities 517 Induction and dielectric heating equipment 665 Industrial machinery Information technology equipment Intrinsically safe systems Luminaires and lighting equipment Luminaires, lampholders, and lamps , , , (B) Marinas and boatyards Mobile homes and mobile home park 550 Motion picture and television studios and similar locations Motors, motor circuits, and controllers 430 Natural and artificially made bodies of water , (B) , , , Network Powered Broadband Communications Circuits , , Optical Fiber Cables

7 of 115 4/16/2015 9:59 AM Conductor/Equipment Article Section Outlet, device, pull, and junction boxes; conduit bodies; and fittings Over 600 volts, nominal, underground wiring methods 314.4, (C) Panelboards Pipe organs 650 Radio and television equipment 810 Receptacles and cord connectors Recreational vehicles and recreational vehicle parks 551 Services 230 Solar photovoltaic systems Swimming pools, fountains, and similar installations 680 Switchboards and panelboards , , , , (D) Switches Theaters, audience areas of motion picture and television studios, and similar locations Transformers and transformer vaults Use and identification of grounded conductors 200 X-ray equipment Submitter Information Verification Submitter Full Name: CMP 5 Organization: [ Not Specified ] Street Address: City: State: Zip: Submittal Date: Thu Jan 15 16:15:58 EST 2015 Committee Statement Committee Statement: This FR corrects the omissions of and Articles 770 and 830. Response Message: Public Input No NFPA [Section No ] Ballot Results This item has passed ballot 17 Eligible Voters 0 Not Returned 16 Affirmative All 1 Affirmative with Comments 0 Negative with Comments 0 Abstention Affirmative All Beckstrand, Gary A.

8 Bowmer, Trevor N. Brett, Jr., Martin J. Dobrowsky, Paul Harding, Joseph Harding, G. Scott Helfrich, William J. Mello, Charles F. Mohla, Daleep C. O'Meara, Mike Palmieri, Charles J. Philips, Nathan Porter, Christine T. Sasso, Nick Simmons, Phil Steinman, Gregory J. Affirmative with Comment Edwards, Timothy 2017 and 2019 are below FR (A)(6) Task group indication that the word provided was not struck out and replaced with the word if. The word is used in Exception 1, but was also not changed in the word summary document. Not sure what the submitter was looking for here. FR (A)(8) The prohibition against using swimming pool structures and grids was inserted in electrodes permitted (part A), should have been entered as (B)(3) instead. The panel also requested this be sent on to CMP 17 for comment FR The FR the committee acted on was FR1232, The text and underlining in TerraView is correct, as well as the panel statement. There is no mention of the resolved PI in response message. The following PIs may need to be added at the Response Message portion: Public Input No 436 NFPA [Section No ] Public Input No 3837 NFPA [Section No ] Pubic Input No 3708 NFPA [Section No ] FR (in TerraView) should have been noted as FR It is correct for section This does not include the work in FR 1234 that the panel accepted for Table (C)(1). NONE of the work on the Table shows up in TerraView. The panel re-ordered the notes to make it clear when they apply. FR At (A)(1) list item (4)additional wording is missing that should read: if the grounding electrode conductor or bonding jumper to the grounding electrode is of sufficient size. of 115 4/16/2015 9:59 AM

9 of 115 4/16/2015 9:59 AM First Revision No NFPA [ Section No (A)(1) ] (1) Electrical System Grounding. Electrical systems that are grounded shall be connected to earth in a manner that will limit the voltage imposed by lightning, line surges, or unintentional contact with higher-voltage lines and that will stabilize the voltage to earth during normal operation. Informational Note No. 1: An important consideration for limiting the imposed voltage is the routing of bonding and grounding electrode conductors so that they are not any longer than necessary to complete the connection without disturbing the permanent parts of the installation and so that unnecessary bends and loops are avoided. Informational Note No. 2: See NFPA , Standard for the Installation of Lightning Protection Systems, for information on lightning protection system grounding. Submitter Information Verification Submitter Full Name: CMP 5 Organization: [ Not Specified ] Street Address: City: State: Zip: Submittal Date: Thu Jan 15 16:18:48 EST 2015 Committee Statement Committee Statement: Response Message: The NEC is not a lightning protection document. Adding the reference to NFPA 780 will provide additional information for ungrounded systems. Public Input No NFPA [Section No (A)(1)] Public Input No NFPA [Section No (C)] Ballot Results This item has passed ballot 17 Eligible Voters 0 Not Returned 4 Affirmative All 13 Affirmative with Comments 0 Negative with Comments 0 Abstention Affirmative All Dobrowsky, Paul Helfrich, William J. Sasso, Nick Steinman, Gregory J. Affirmative with Comment

10 of 115 4/16/2015 9:59 AM Beckstrand, Gary A. The Panel Statement is incorrect for FR It should read. "The NEC is not a lightning protection document. Adding the reference to NFPA 780 will provide additional information for grounded systems." The addition of the reference to NFPA is inappropriate as the document is not in current cycle. The reference should be verified by the CMP in the Comment cycle. Bowmer, Trevor N. Item (1) - The panel statement for this FR is not correctly stated. This section is for grounded systems, whereas the panel statement is for the ungrounded section. Item (2)- The version of the standard referenced is the 2017 Edition. A question arises as to the validity of using that date. It will be published prior to the publication of the NEC, but is not yet published. Item (3) - FR-1204 addressing 250.4(B)(1) is missing from Terraview and this ballot. The FR-1204 accepted by the CMP5 has the same informational note, applicable to ungrounded systems. In addition, the same issue with the date of the referenceed standard NFPA 780 is present. Brett, Jr., Martin J (A)(1) Two issues: First, the panel statement is not correctly stated. This section is for grounded systems, the panel statement is for the ungrounded section. Second the version of the standard referenced is the 2017 Edition. Question arises as to the validity of using that date. It will be published prior to the publication of the NEC, but is not yet published. Also note identical informational note and reference accepted as FR 1204 by the committee did not show up in TerraView The panel statement in TerraView for 250.4(B)(1) which would be for ungrounded systems. Edwards, Timothy I could not find any record from Task Group three of any changes to (A)(2) but TerraView shows changes for bonding of metal water piping in building of multiple occupancy. What we had The bonding jumper shall be sized in accordance with Table based on the rating of the overcurrent device supplying the occupancy. has been replaced with The equipment bonding jumper shall be sized in accordance with Table (D), based on the rating of the overcurrent protective device for the circuit supplying the occupancy. At 250/104(A)(3) there is missing existing text that we struck out At (A)(3)(c) additional text has been added if the grounding electrode conductor or bonding jumper to the grounding electrode is of sufficient size At the paragraph following 250/104(A)(3)(c) we had Table referenced, it now shows as Table (C)(1) which is correct, not sure we voted on that however. Section (B) has been changed to reference sizing bonding conductors for other piping in accordance with Table (C)(1) instead and in addition to Table which is kept in this section only for sizing equipment grounding conductors (which makes NO sense) (C) Structural Metal has changes in the main paragraph not shown in our summaries. Harding, G. Scott 250.4(A)(1)The panel statement is not correctly stated. This section is for grounded systems, the panel statement is for the ungrounded section. Second the version of the standard referenced is the 2017 Edition. Question arises as to the validity of using that date. It will be published prior to the publication of the NEC, but is not yet published. Also note identical informational note and reference accepted as FR 1204 by the committee did not show up in TerraView. The panel statement in TerraView for FR (B)(1) which would be for ungrounded systems. Harding, Joseph FR (A)(1) Two issues: First, the panel statement is not correctly stated. This section is for grounded systems, the panel statement is for the ungrounded section. Second the version of the standard referenced is the 2017 Edition. Question arises as to the validity of using that date. It will be published prior to the publication of the NEC, but is not yet published. Also note identical informational note and reference accepted as FR 1204 by the committee did not show up in TerraView The panel statement in TerraView for 250.4(B)(1) which would be for ungrounded systems. Mello, Charles F. The Informational Note No.1 was noted that the "No. 1" was not underlined indicating the change in text since Informational Note No. 2 was added as a result of the First Revision change. The panel statement should be corrected as follows: "The NEC is not a lightning protection Document. Adding the reference to NFPA 780 will provide additional information for grounded systems." It is also noted that FR 1204 is not on the ballot to have the same informational note added to 250.4(B)(1) with the same panel statement except for the reference to "grounded" systems would be for "ungrounded" systems. Mohla, Daleep C. First, the panel statement is not correctly stated. This section is for grounded systems, the panel statement is for the ungrounded section. Second the version of the standard referenced is the 2017 Edition. Question arises as to the validity of using that date. It will be published prior to the publication of the NEC, but is not yet published. Also note identical informational note and reference accepted as FR 1204 by the committee did not show up in TerraView The panel statement in TerraView for 250.4(B)(1) which would be for ungrounded systems. FR (B)(1) Does not show up in TerraView. It is an identical informational note, applicable to ungrounded

11 0 of 115 4/16/2015 9:59 AM systems. Same issue with the date of the standard NFPA 780 O'Meara, Mike Two issues: First, the panel statement is not correctly stated. This section is for grounded systems, the panel statement is for the ungrounded section. Second the version of the standard referenced is the 2017 Edition. Question arises as to the validity of using that date. It will be published prior to the publication of the NEC, but is not yet published. Also note identical informational note and reference accepted as FR 1204 by the committee did not show up in TerraView The panel statement in TerraView for 250.4(B)(1) which would be for ungrounded systems. FR (B)(1) Does not show up in TerraView. It is an identical informational note, applicable to ungrounded systems. Same issue with the date of the standard NFPA 780 Palmieri, Charles J (A)(1) Two issues: First, the panel statement is not correctly stated. This section is for grounded systems, the panel statement is for the ungrounded section. Second the version of the standard referenced is the 2017 Edition. Question arises as to the validity of using that date. It will be published prior to the publication of the NEC, but is not yet published. Also note identical informational note and reference accepted as FR 1204 by the committee did not show up in Terra View The panel statement in Terra View for 250.4(B)(1) which would be for ungrounded systems. Philips, Nathan FR (A)(1) Two issues: First, the panel statement is not correctly stated. This section is for grounded systems, the panel statement is for the ungrounded section. Second the version of the standard referenced is the 2017 Edition. Question arises as to the validity of using that date. It will be published prior to the publication of the NEC, but is not yet published. Also note identical informational note and reference accepted as FR 1204 by the committee did not show up in TerraView. The panel statement in TerraView for FR 1203 should be used for FR (B)(1) which would be for ungrounded systems. Porter, Christine T. FR (A)(1) Two issues: First, the panel statement is not correctly stated. This section is for grounded systems, the panel statement is for the ungrounded section. Second the version of the standard referenced is the 2017 Edition. Question arises as to the validity of using that date. It will be published prior to the publication of the NEC, but is not yet published. Also note identical informational note and reference accepted as FR 1204 by the committee did not show up in TerraView The panel statement in TerraView for 250.4(B)(1) which would be for ungrounded systems. FR (B)(1) Does not show up in TerraView. It is an identical informational note, applicable to ungrounded systems. Same issue with the date of the standard NFPA 780 Simmons, Phil FR-1204 is missing from the NFPA ballot. It adds an Informational Note to 250.4(B)(1). Please insert it as it was accepted by CMP-5 at its meeting.

12 of 2 4/15/ :02 AM First Revision No NFPA [ Section No ] Use of Strike Termination Devices. Conductors and driven pipes, rods, or plate electrodes used for grounding strike termination devices shall not be used in lieu of the grounding electrodes required by for grounding wiring systems and equipment. This provision shall not prohibit the required bonding together of grounding electrodes of different systems. Informational Note No. 1: See for spacing from strike termination devices. lightning protection system components. See (D), (J), and (D) for bonding of electrodes. Informational Note No. 2: Bonding together of all separate grounding electrodes will limit potential voltage differences between them and between their associated wiring systems. Submitter Information Verification Submitter Full Name: CMP 5 Organization: NATIONAL FIRE PROTECTION ASSOC Street Address: City: State: Zip: Submittal Date: Fri Jan 23 11:16:21 EST 2015 Committee Statement Committee Statement: The change is made for consistency with NFPA 780. Response Message: Public Input No NFPA [Section No ] Public Input No NFPA [Section No ] Ballot Results This item has passed ballot 17 Eligible Voters 0 Not Returned 15 Affirmative All 2 Affirmative with Comments 0 Negative with Comments 0 Abstention Affirmative All Beckstrand, Gary A. Bowmer, Trevor N. Brett, Jr., Martin J. Dobrowsky, Paul Harding, Joseph Harding, G. Scott Helfrich, William J. Mello, Charles F. Mohla, Daleep C. O'Meara, Mike

13 Philips, Nathan Porter, Christine T. Sasso, Nick Simmons, Phil Steinman, Gregory J. Affirmative with Comment Edwards, Timothy See attached errata Palmieri, Charles J (B)(1) Does not show up in Terra View. It is an identical informational note, applicable to ungrounded systems. Same issue with the date of the standard NFPA 780 of 2 4/15/ :02 AM

14 1 of 115 4/16/2015 9:59 AM First Revision No NFPA [ Section No (B) ] (B) Alterations to Stop Objectionable Current. If the use of multiple grounding connections results in objectionable current, one or more of the following alterations shall be permitted to be made, provided that the and the requirements of 250.4(A)(5) or (B)(4) are met:, one or more of the following alterations shall be permitted: (1) Discontinue one or more but not all of such grounding connections. (2) Change the locations of the grounding connections. (3) Interrupt the continuity of the conductor or conductive path causing the objectionable current. (4) Take other suitable remedial and approved action. Submitter Information Verification Submitter Full Name: CMP 5 Organization: [ Not Specified ] Street Address: City: State: Zip: Submittal Date: Thu Jan 15 16:33:25 EST 2015 Committee Statement Committee Statement: The change is made to comply with the NEC Style Manual and improve clarity. Response Message: Public Input No NFPA [Section No (B)] Ballot Results This item has passed ballot 17 Eligible Voters 0 Not Returned 15 Affirmative All 1 Affirmative with Comments 1 Negative with Comments 0 Abstention Affirmative All Beckstrand, Gary A. Bowmer, Trevor N. Brett, Jr., Martin J. Dobrowsky, Paul Harding, Joseph Harding, G. Scott Helfrich, William J. Mello, Charles F.

15 Mohla, Daleep C. O'Meara, Mike Palmieri, Charles J. Philips, Nathan Porter, Christine T. Simmons, Phil Steinman, Gregory J. Affirmative with Comment Edwards, Timothy FR (B) There seems to be a sense that the words should be shall be at least in the same proportion and not shall be in the same proportion. This is directly from Chuck and is clear enough that I did not reformat CMP-5 Task Group 4 Review The following are noted from the review of the final approved template work at the First Revision meeting and the final Terra View document markup. 1) FR 1217 for section (A)(4) good 2) FR 1219 for section (A)(4), (5), (6) a) (4) - Missed the word system between electrode and shall b) (4) - In the exception, did not show strike out of No. 2 to (1) and (2) that is from 2014 Code text. c) (4) - The text is correct as passed by the panel but the legislative text is not correct in what was deleted and what was added to be clear on the exact changes. d) (5) The additional words or as permitted in (C)(1) and (2) are not showing in Terra View. e) (6) The water pipe got added but not as the panel did and the whole aspect of the metal frame of the building got deleted where the panel s action has both inclusive. Terra reads as The metal frame of the building or structure A metal water pipe that complies with (C)(2) (C)(2)250.52(A)(2) or is connected to the grounding electrode system by a conductor that shall not be smaller than 3/0 AWG copper or 250 kcmil aluminum. Negative with Comment Sasso, Nick The panel is using permissive language, "one or more of the following alterations shall be permitted..." If there is objectionable current, then one of the following (1, 2, 3, or 4) NEEDS to happen in order to abate the objectionable current. In reality, the new language gives the inspector no authority to order the correction as it is merely permissive language, see 90.5(B). This should be rewritten with mandatory language, in order to facilitate the Enforcer's corrections. 2 of 115 4/16/2015 9:59 AM

16 3 of 115 4/16/2015 9:59 AM First Revision No NFPA [ Section No (A) ] (A) General. The following ac systems of 50 volts to 1000 volts shall be permitted to be grounded but shall not be required to be grounded: (1) Electrical systems used exclusively to supply industrial electric furnaces for melting, refining, tempering, and the like (2) Separately derived systems used exclusively for rectifiers that supply only adjustable-speed industrial drives (3) Separately derived systems supplied by transformers that have a primary voltage rating of 1000 volts or less, provided that if all the following conditions are met: a. The system is used exclusively for control circuits. b. The conditions of maintenance and supervision ensure that only qualified persons service the installation. c. Continuity of control power is required. (4) Other systems that are not required to be grounded in accordance with the requirements of (B) Submitter Information Verification Submitter Full Name: CMP 5 Organization: [ Not Specified ] Street Address: City: State: Zip: Submittal Date: Fri Jan 16 11:16:18 EST 2015 Committee Statement Committee Statement: The change is made to improve the wording in this section but leave the third level subdivisions as a, b and c. Response Message: Public Input No NFPA [Section No (A)] Ballot Results This item has passed ballot 17 Eligible Voters 0 Not Returned 16 Affirmative All 1 Affirmative with Comments 0 Negative with Comments 0 Abstention Affirmative All

17 Beckstrand, Gary A. Bowmer, Trevor N. Brett, Jr., Martin J. Dobrowsky, Paul Harding, Joseph Harding, G. Scott Helfrich, William J. Mello, Charles F. Mohla, Daleep C. O'Meara, Mike Palmieri, Charles J. Philips, Nathan Porter, Christine T. Sasso, Nick Simmons, Phil Steinman, Gregory J. Affirmative with Comment Edwards, Timothy This should read as follows with legislative text: The A metal water pipe that complies with (A)(2) (C)(1) or the metal structural frame of a building or structure that complies with (A)(2)250.68(C)(2) or connected to the grounding electrode system by a conductor that shall not be smaller than 3/0 AWG copper or 250 kcmil aluminum. f) (6)(c)(2) - The terms thick and wide were omitted from the millimeter dimensions. The term thick was omitted after 1/4 in. in the parenthesis s part. The word also was omitted between shall and comply 3) FR 1220 for section (B)(3) This was proposed for (A)(8) and the panel action moved with revised text to (B). What is in Terra is: (A)(8) Other Local Metal Underground Systems or Structures. Other local metal underground systems or structures such s piping systems, underground tanks, and underground metal well casings that are not bonded to a metal water pipe. The structures and structural reinforcing steel described at (B)(1) and (B)(2) shall not be considered as a grounding electrode described by this section. The correct text should be in section (B) as new list item (3) as follows: (3) The structures and structural reinforcing steel described in (B)(1 and (B)(2). 4) FR 1221 for section (F) is good 5) FR 1222 for section (A) a) The text or where subject to corrosive conditions is struck out and the panel rejected that proposed change and it should not be struck out. 6) Fr 1223 for section (B) (1) a) The beginning should show the A 4 as stuck out and that is missing. b) The text shall be protected if exposed to physical damage. Should have been struck out and was not, sentence now does not make sense are revised. c) Remainder of text works but legislative text as revised by the panel is different i. (2) 4 of 115 4/16/2015 9:59 AM

18 5 of 115 4/16/2015 9:59 AM First Revision No NFPA [ Section No ] Circuits Not to Be Grounded. The following circuits shall not be grounded: (1) Circuits for electric cranes operating over combustible fibers in Class III locations, as provided in (2) Circuits in health care facilities as provided in a nd (3) Circuits for equipment within electrolytic cell working zone as provided in Article 668 (4) Secondary circuits of lighting systems as provided in 411.6(A) (5) Secondary circuits of lighting systems as provided in (A)(2) (6) Class 2 load side circuits for low-voltage suspended ceiling power distribution systems as provided in (B) Submitter Information Verification Submitter Full Name: CMP 5 Organization: [ Not Specified ] Street Address: City: State: Zip: Submittal Date: Fri Jan 16 11:21:15 EST 2015 Committee Statement Committee Statement: The change is made to align with Response Message: Public Input No NFPA [Section No ] Ballot Results This item has passed ballot 17 Eligible Voters 0 Not Returned 15 Affirmative All 2 Affirmative with Comments 0 Negative with Comments 0 Abstention Affirmative All Beckstrand, Gary A. Bowmer, Trevor N. Brett, Jr., Martin J. Dobrowsky, Paul Harding, Joseph Harding, G. Scott

19 6 of 115 4/16/2015 9:59 AM Helfrich, William J. Mohla, Daleep C. O'Meara, Mike Palmieri, Charles J. Philips, Nathan Porter, Christine T. Sasso, Nick Simmons, Phil Steinman, Gregory J. Affirmative with Comment Edwards, Timothy d) Missed the underlines for the parentheses marks for (RMC) e) The added requirement for PVC to be the XW type was missed - should read as rigid polyvinyl chloride conduit (PVC), XW-type f) Missed the added requirement for RTRC to be XW type. Should read reinforced thermosetting resin conduit (RTRC-XW) g) Missed the underline for the parentheses marks for (EMT) i. (3) h) The RMC had the parentheses marks deleted but not struck in Terra i) The RTRC conduit was to be the XW type and should show as RTRC-XW j) The parentheses marks for the EMT were to be deleted but were missed. i. (4) k) There is an extra the added in to the text between with and earth. 7. FR 1224 fir section (D) good 8. FR 1225 for section (E)(1) good 9. FR 1226 for section (F) good 10. FR 1227 for section (A) a. Where was to be changed to If b. After the word conductor the words or bonding jumper should have been added as new text. (B) c. Where was to be changed to If d. After the word conductor the words or bonding jumper should have been added as new text. e. The comma after (A)((3) should be shown as deleted (C) f. Where was to be changed to If g. After the word conductor the words or bonding jumper should have been added as new text. h. The comma after (A)((3) should be shown as deleted 11. FR 1228 for section )C) a) The words shall be were incorrectly inserted between piping and located. This is to be statement for where a connection is made, as written the water pipe is now located within five feet of the entry to the building. 12. FR 1229 for section (5) good 13. FR 1230 for section good 14. FR 1240 Mello, Charles F. The text shown is incorrect in the order of words. The text should read: (6) Class 2 load side circuits for suspended ceiling low-voltage power grid distribution systems as provided in (B)" This is the correct text as stated in (B) which the panel used for consistency.

20 7 of 115 4/16/2015 9:59 AM First Revision No NFPA [ Section No (C) [Excluding any Sub-Sections] ] Where an ac system operating at volts or less is grounded at any point, the grounded conductor(s) shall be routed with the ungrounded conductors to each service disconnecting means and shall be connected to each disconnecting means grounded conductor(s) terminal or bus. A main bonding jumper shall connect the grounded conductor(s) to each service disconnecting means enclosure. The grounded conductor(s) shall be installed in accordance with (C)(1) through (C)(4). Exception: Where two or more service disconnecting means are located in a single assembly listed for use as service equipment, it shall be permitted to connect the grounded conductor(s) to the assembly common grounded conductor(s) terminal or bus. The assembly shall include a main bonding jumper for connecting the grounded conductor(s) to the assembly enclosure. Submitter Information Verification Submitter Full Name: CMP 5 Organization: [ Not Specified ] Street Address: City: State: Zip: Submittal Date: Fri Jan 16 14:31:39 EST 2015 Committee Statement Committee Statement: This revision is necessary for up to 2000V to avoid a gap in voltage. The change from 1000 to 2000 Volts in this section does not affect the requirements for grounding and bonding and will allow future equipment expansion into this voltage range, such as PV and wind systems. Response Message: Public Input No NFPA [Section No (C) [Excluding any Sub-Sections]] Ballot Results This item has passed ballot 17 Eligible Voters 0 Not Returned 12 Affirmative All 2 Affirmative with Comments 3 Negative with Comments 0 Abstention Affirmative All Beckstrand, Gary A. Brett, Jr., Martin J. Harding, Joseph Harding, G. Scott Helfrich, William J. Mello, Charles F.

21 Mohla, Daleep C. Palmieri, Charles J. Philips, Nathan Porter, Christine T. Simmons, Phil Steinman, Gregory J. Affirmative with Comment Bowmer, Trevor N. Increasing these voltage levels does not change the grounding requirements of Article 250. However, making these changes in Article 250 without concomitant and correlating changes in other parts of the code will lead to confusion and inconsistency. Edwards, Timothy See attached errata Negative with Comment Dobrowsky, Paul The voltage level should not be increased to 2000 to be consistent with other code making panels actions to have the threshold be There is no gap in voltage levels in Article 250, it is up to 1000 volts and over 1000 volts. O'Meara, Mike The voltage level should remain at 1000 volts. Making this change may allow additional items to comply with low voltage requirements without substantiation and may create safety issues. Although the change in voltage does not directly impact the grounding requirements in Article 250, it creates inconsistency with other Articles throughout the code, as other CMP s did not accept these Public Inputs Sasso, Nick There is an undercurrent on this panel to replace 1000 volts with "2000 volts." In my opinion, this is arbitrary and being attempted to serve some other purpose. Article 490 has a definition of high voltage (more than 1000 volts) therefore it is sensible and practical for Article 250 to remain consistent with the NEC definition in Article 490. The NEC document needs to be consistent throughout. It is also important to remember that other regulations, such as OSHA, use 1000 volts when the term "high voltage" is referenced. Furthermore, OSHA cooperative programs state that for "OVER 1000 VOLTS" electrical burn wounds possess special clinical characteristics. In addition, for "OVER 1000 VOLTS" there is a risk of wounds which can lead to amputation. The distinction is "over 1000" not "2000 volts." 8 of 115 4/16/2015 9:59 AM

22 9 of 115 4/16/2015 9:59 AM First Revision No NFPA [ Section No (C)(1) ] (1) Sizing for a Single Raceway or Cable. The grounded conductor shall not be smaller than specified in Table (C)(1). Submitter Information Verification Submitter Full Name: CMP 5 Organization: [ Not Specified ] Street Address: City: State: Zip: Submittal Date: Fri Jan 16 11:45:54 EST 2015 Committee Statement Committee Statement: The grounded conductor size needs to be consistent for raceways and ables. Response Message: Public Input No NFPA [Section No (C)(1)] Ballot Results This item has passed ballot 17 Eligible Voters 0 Not Returned 6 Affirmative All 11 Affirmative with Comments 0 Negative with Comments 0 Abstention Affirmative All Dobrowsky, Paul Helfrich, William J. Mello, Charles F. Sasso, Nick Simmons, Phil Steinman, Gregory J. Affirmative with Comment Beckstrand, Gary A. The Panel Statement should be shown as, "The grounded conductor size needs to be consistent for raceways and cables." Bowmer, Trevor N. The word "Cable" is not underlined in Terraview and it needs to be underlined to show it as newly added. Note also there is also a misspelled word (ables) in panel statement, it should be cables Brett, Jr., Martin J (C)(1) The words "or Cable" are not underlined, they need to be underlined. Note also misspelled word

23 0 of 115 4/16/2015 9:59 AM "ables" in panel statement, it should be cables Edwards, Timothy See attached errata Harding, G. Scott (C)(1) The word Cable is not underlined it needs to be underlined. Note also misspelled word (ables) in panel statement, it should be cables Harding, Joseph FR (C)(1) The word Cable is not underlined it needs to be underlined. Note also misspelled word (ables) in panel statement, it should be cables Mohla, Daleep C. The word Cable is not underlined it needs to be underlined. Note also misspelled word (ables) in panel statement, it should be cables O'Meara, Mike The word Cable is not underlined it needs to be underlined. Note also misspelled word (ables) in panel statement, it should be cables Palmieri, Charles J. The legislative underline of the new term Cables is not indicated in the title (C)(1) The word Cable is not underlined it needs to be underlined. Note also misspelled word (ables) in panel statement, it should be cables Philips, Nathan FR (C)(1) The word Cable is not underlined it needs to be underlined. Note also misspelled word (ables) in panel statement, it should be cables Porter, Christine T. FR (C)(1) The word Cable is not underlined it needs to be underlined. Note also misspelled word (ables) in panel statement, it should be cables

24 1 of 115 4/16/2015 9:59 AM First Revision No NFPA [ Section No (C)(2) ] (2) Parallel Conductors in Two or More Raceways or Cables. If the ungrounded service-entrance conductors are installed in parallel in two or more raceways or cables, the grounded conductor shall also be installed in parallel. The size of the grounded conductor in each raceway or cable shall be based on the total circular mil area of the parallel ungrounded conductors in the raceway or cable, as indicated in (C)(1), but not smaller than 1/0 AWG. Informational Note: See (H) for grounded conductors connected in parallel. Submitter Information Verification Submitter Full Name: CMP 5 Organization: [ Not Specified ] Street Address: City: State: Zip: Submittal Date: Fri Jan 16 11:48:17 EST 2015 Committee Statement Committee Statement: The grounded conductor size needs to be consistent for raceways and cables. Response Message: Public Input No NFPA [Section No (C)(2)] Ballot Results This item has passed ballot 17 Eligible Voters 0 Not Returned 7 Affirmative All 10 Affirmative with Comments 0 Negative with Comments 0 Abstention Affirmative All Beckstrand, Gary A. Dobrowsky, Paul Helfrich, William J. Mello, Charles F. Sasso, Nick Simmons, Phil Steinman, Gregory J. Affirmative with Comment Bowmer, Trevor N. The word "or Cable is not underlined in Terraview and it needs to be underlined to show it as newly added. Brett, Jr., Martin J.

25 250.24(C)(2) The words or Cable are not underlined in the title, they need to be underlined Edwards, Timothy See attached errata Harding, G. Scott (C)(2) The words or Cable are not underlined they need to be underlined Harding, Joseph FR (C)(2) The words or Cable are not underlined they need to be underlined Mohla, Daleep C. The words or Cable are not underlined they need to be underlined O'Meara, Mike The words or Cable are not underlined they need to be underlined Palmieri, Charles J. The legislative underline of the new term Cables is not indicated in the title (C)(2) The words or Cable are not underlined they need to be underlined Philips, Nathan The words or Cable are need to be underlined Porter, Christine T. FR (C)(2) The words or Cable are not underlined they need to be underlined 2 of 115 4/16/2015 9:59 AM

26 3 of 115 4/16/2015 9:59 AM First Revision No NFPA [ Section No (A)(1) ] (1) System Bonding Jumper. An unspliced system bonding jumper shall comply with (A) through (D). This connection shall be made at any single point on the separately derived system from the source to the first system disconnecting means or overcurrent device, or it shall be made at the source of a separately derived system that has no disconnecting means or overcurrent devices, in accordance with (A)(1)(a) or (b). The system bonding jumper shall remain within the enclosure where it originates. If the source is located outside the building or structure supplied, a system bonding jumper shall be installed at the grounding electrode connection in compliance with (C). Exception No. 1: For systems installed in accordance with 450.6, a single system bonding jumper connection to the tie point of the grounded circuit conductors from each power source shall be permitted. Exception No. 2: If a building or structure is supplied by a feeder from an outdoor transformer separately derived system, a system bonding jumper at both the source and the first disconnecting means shall be permitted if doing so does not establish a parallel path for the grounded conductor. If a grounded conductor is used in this manner, it shall not be smaller than the size specified for the system bonding jumper but shall not be required to be larger than the ungrounded conductor(s). For the purposes of this exception, connection through the earth shall not be considered as providing a parallel path. Exception No. 3: The size of the system bonding jumper for a system that supplies a Class 1, Class 2, or Class 3 circuit, and is derived from a transformer rated not more than 1000 volt-amperes, shall not be smaller than the derived ungrounded conductors and shall not be smaller than 14 AWG copper or 12 AWG aluminum. (a) (b) Installed at the Source. The system bonding jumper shall connect the grounded conductor to the supply-side bonding jumper and the normally non current-carrying metal enclosure. Installed at the First Disconnecting Means. The system bonding jumper shall connect the grounded conductor to the supply-side bonding jumper, the disconnecting means enclosure, and the equipment grounding conductor(s). Submitter Information Verification Submitter Full Name: CMP 5 Organization: [ Not Specified ] Street Address: City: State: Zip: Submittal Date: Fri Jan 16 12:29:04 EST 2015 Committee Statement Committee Statement: Transformers are not the only type of separately derived system Response Message: Public Input No NFPA [Section No (A)(1)] Ballot Results This item has passed ballot 17 Eligible Voters 0 Not Returned 16 Affirmative All

27 4 of 115 4/16/2015 9:59 AM 1 Affirmative with Comments 0 Negative with Comments 0 Abstention Affirmative All Beckstrand, Gary A. Bowmer, Trevor N. Brett, Jr., Martin J. Dobrowsky, Paul Harding, Joseph Harding, G. Scott Helfrich, William J. Mello, Charles F. Mohla, Daleep C. O'Meara, Mike Palmieri, Charles J. Philips, Nathan Porter, Christine T. Sasso, Nick Simmons, Phil Steinman, Gregory J. Affirmative with Comment Edwards, Timothy See attached errata

28 5 of 115 4/16/2015 9:59 AM First Revision No NFPA [ Section No (A)(4) ] (4) Grounding Electrode. The building or structure grounding electrode shall be used as the grounding electrode for the separately derived system. If located outdoors, the grounding electrode shall be in accordance with (C). as near as practicable to, and preferably in the same area as, the grounding electrode conductor connection to the system. The grounding electrode shall be the nearest of one of the following: (0) Metal water pipe grounding electrode as specified in (A)(1) (0) Structural metal grounding electrode as specified in (A)(2) Exception No. 1: Any of the other electrodes identified in (A) shall be used if the electrodes specified by (A)(4) are not available. Exception: to (1) and (2): If a separately derived system originates in listed equipment suitable equipment for use as service equipment, the grounding electrode used for the service or feeder equipment shall be permitted as the grounding electrode for the separately derived system. that is listed and labeled as suitable for use as service equipment, the grounding electrode used for the service or feeder equipment shall be permitted to be used as the grounding electrode for the separately derived system. Informational Note No. 1: See (D) for bonding requirements for interior metal water piping in the area served by separately derived systems. Informational Note No. 2: See and for requirements for bonding all electrodes together if located at the same building or structure. Submitter Information Verification Submitter Full Name: CMP 5 Organization: [ Not Specified ] Street Address: City: State: Zip: Submittal Date: Fri Jan 16 13:31:02 EST 2015 Committee Statement Committee Statement: These revisions better describe a grounding electrode and include the conductors that are suitable to extend the grounding electrode connection. The revisions to this section recognize the water pipe and the structural metal frame as covered in (C) that are being used are not grounding electrodes but rather are conductors extending the grounding electrode connection. The revised text allowed exception No. 1 to be deleted as those options are covered by the referenced sections. Editorial changes were made to (A)(4), former Exception No. 2 to make it technically correct. Response Message: Ballot Results This item has passed ballot

29 17 Eligible Voters 0 Not Returned 6 Affirmative All 11 Affirmative with Comments 0 Negative with Comments 0 Abstention Affirmative All Beckstrand, Gary A. Dobrowsky, Paul Helfrich, William J. Sasso, Nick Simmons, Phil Steinman, Gregory J. Affirmative with Comment Bowmer, Trevor N. FR-1219 is missing several items accepted during the CMP 5 meeting. In the revised Terraview (A)(4), the text is correct as passed by the panel but the legislative text is not correct in what was deleted and what was added to be clear on the exact changes. Item #(1) The word system needs to added between "electrode" and "shall" Item # (2) In the exception, Terraview did not show the strike out of No. 2 to (1) and (2) that is from 2014 Code text. Brett, Jr., Martin J. FR 1219 for section (A)(4), (5), (6) ****************************** 25030(A)(4) Missed the word system between electrode and shall In the exception, did not show strike out of No. 2 to (1) and (2) that is from 2014 Code text. The text is correct as passed by the panel but the legislative text is not correct in what was deleted and what was added to be clear on the exact changes. ******************************************* (A(5) The additional words or as permitted in (C)(1) and (2) are not showing in Terra View (A)(6) The water pipe got added but not as the panel did and the whole aspect of the metal frame of the building got deleted where the panel s action has both inclusive. Terra reads as The metal frame of the building or structure A metal water pipe that complies with (C)(2) (C)(2)250.52(A)(2) or is connected to the grounding electrode system by a conductor that shall not be smaller than 3/0 AWG copper or 250 kcmil aluminum. This should read as follows with legislative text: The A metal water pipe that complies with (A)(2) (C)(1) or the metal structural frame of a building or structure that complies with (A)(2)250.68(C)(2) or connected to the grounding electrode system by a conductor that shall not be smaller than 3/0 AWG copper or 250 kcmil aluminum. ****************************************** (A)(6) c)(2) - The terms thick and wide were omitted from the millimeter dimensions. The term thick was omitted after 1/4 in. in the parenthesis s part. The word also was omitted between shall and comply Edwards, Timothy See attached errata Harding, G. Scott (4) - Missed the word system between electrode and shall (4) - In the exception, did not show strike out of No. 2 to (1) and (2) that is from 2014 Code text. (4) - The text is correct as passed by the panel but the legislative text is not correct in what was deleted and what was added to be clear on the exact changes. (5) The additional words or as permitted in (C)(1) and (2) are not showing in Terra View. (6) The water pipe got added but not as the panel did and the whole aspect of the metal frame of the building got deleted where the panel s action has both inclusive. Terra reads as A metal water pipe that complies with (C)(2) or is connected to the grounding electrode system by a conductor that shall not be smaller than 3/0 AWG copper or 250 kcmil aluminum. This should read as follows: The metal water pipe that complies with (C)(1) or the metal structural frame of a building or structure that complies with (C)(2) or connected to the grounding electrode system by a conductor not smaller than 3/0 AWG copper or 250 kcmil aluminum. (6)(c)(2) - The terms thick and wide were omitted from the millimeter dimensions. The term thick was omitted after 1/4 in. in the parenthesis s part. The word also was omitted between shall and comply Harding, Joseph FR 1219 for section (A)(4), (5), (6) a) (4) - Missed the word system between electrode and shall b) (4) - In the exception, did not show strike out of No. 2 to (1) and (2) that is from 2014 Code text. c) (4) - The text is 6 of 115 4/16/2015 9:59 AM