MEMORANDUM. According to the final ballot results, all ballot items received the necessary affirmative votes to pass ballot.

Transcription

1 National Fire Protection Association 1 Batterymarch Park, Quincy, MA Phone: Fax: MEMORANDUM To: NEC Code-Making Panel 13 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 ballot items received the necessary affirmative votes to pass ballot. 20 Members Eligible to Vote 1 Members Ballots Not Returned (Paulsen) 9 Members voted Affirmative with Comment on one or more Revision (Brady, Croushore, Caron, Czarnecki, Neeser, Ode, Rodriguez. Savage, Spina) 9 Members voted Negative on one or more Revision (Brady, Croushore, Czarnecki, Degan, Little, Ode, Rodriguez, Savage, Spina ) 1 Members Abstained on one or more Revision (Brady) 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 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 1 of 2 4/16/2015 9:30 AM First Revision No NFPA [ Detail ] Add the following Informational Note to : Informational Note: See NFPA 37, Standard for the Installation and Use of Stationary Combustion Engines and Gas Turbines for information on the location of generator exhaust. Submitter Information Verification Submitter Full Name: CMP 13 Organization: [ Not Specified ] Street Address: City: State: Zip: Submittal Date: Tue Jan 20 15:08:39 EST 2015 Committee Statement and Meeting Notes Committee Statement: Where the NEC addresses the permanent installation of combustible engine driven generators, it is prudent to reference NFPA 37. Prescriptive requirements for generator exhaust is under the purview of NFPA 37 and any proposed changes should be directed to that committee. Response Message: Public Input No NFPA [Section No ] Ballot Results This item has passed ballot 20 Eligible Voters 1 Not Returned 19 Affirmative All 0 Affirmative with Comments 0 Negative with Comments 0 Abstention Not Returned Paulsen, Shawn Affirmative All Adams, Martin D. Brady, Brian B. Caron, Daniel J. Conrad, James S. Croushore, Timothy M. Currin, Jr., Richard D. Czarnecki, Neil A. Daugherty, Herbert H.

3 Degnan, James E. Froemming, Steven F. Keenan, Ronald A. Little, Linda J. Neeser, Daniel R. Ode, Mark C. Rodriguez, Arnoldo L. Savage, Sr., Michael L. Spina, Mario C. Tobias, Jr., David White, James R. 2 of 2 4/16/2015 9:30 AM

4 First Revision No NFPA [ Section No ] Marking. Each generator shall be provided with a nameplate giving the manufacturer s name, the rated frequency, the number of phases if of ac, the rating in kilowatts or kilovolt-amperes, the normal volts and amperes corresponding to the rating, the rated revolutions per minute, and the rated ambient temperature or rated temperature rise. Nameplates for all stationary generators and portable generators rated more than 15 kw shall also give the power factor, the subtransient and transient impedances reactances, the maximum short-circuit current, and the insulation system class, and the time rating. Stationary and portable generators shall be marked to indicate if the generator is protected against overload by inherent design, an overcurrent protective relay, circuit breaker, or fuse. Marking shall be provided by the manufacturer to indicate whether or not the generator neutral is bonded to the generator its frame. Where the bonding of a generator is modified in the field, additional marking shall be required to indicate whether the generator neutral is bonded to the generator frame. Submitter Information Verification Submitter Full Name: CMP 13 Organization: [ Not Specified ] Street Address: City: State: Zip: Submittal Date: Mon Jan 12 11:22:37 EST 2015 Committee Statement Committee Statement: The term impedances has been changed to reactances to provide the correct industry wording. The generator is now required to be marked with the maximum short-circuit current to assist the inspector and installer when verifying proper overcurrent protection in the field. Newer generators are being manufactured with inverter based designs. Determining fault current ratings for these generators is difficult and is best marked on the generator by the manufacturer. Marking would also be now required to indicate whether the generator is inherently designed to prevent overload or whether an overcurrent protective relay is provided. This information will assist the AHJ in determining compliance with Response Message: Public Input No NFPA [Section No ] Public Input No NFPA [Section No ] Ballot Results This item has passed ballot 20 Eligible Voters 1 Not Returned 16 Affirmative All 1 Affirmative with Comments 2 Negative with Comments of 144 4/16/ :28 AM

5 of 144 4/16/ :28 AM 0 Abstention Not Returned Paulsen, Shawn Affirmative All Adams, Martin D. Caron, Daniel J. Conrad, James S. Currin, Jr., Richard D. Czarnecki, Neil A. Daugherty, Herbert H. Froemming, Steven F. Keenan, Ronald A. Little, Linda J. Neeser, Daniel R. Ode, Mark C. Rodriguez, Arnoldo L. Savage, Sr., Michael L. Spina, Mario C. Tobias, Jr., David White, James R. Affirmative with Comment Brady, Brian B. Most 60 Hz. commercial generator sets and component generators can be field wired and operated in several different output configurations outputting different voltages including 208 volts, 240 volts and 480 volts. The per unit reactance's they present are different in each operating mode and voltage. Therefore it is necessary to refer to the generator data sheet (readily available on line) to determine actual reactance's for a particular installation. Factory labeling with reactance values independent of actual final installations will provide unreliable fault current estimates. Negative with Comment Croushore, Timothy M. I am in agreement with changing the word "impedances" to "reactances". I am in agreement with adding the new last sentence in paragraph #2 of about marking of stationary and portable generators. I am in agreement with the removal of the words "the generator", "a generator", and "generator" twice in the last paragraph. However, the requirement for the nameplate to indicate the maximum short-circuit current is confusing. In addition, removal of the time rating removes the classification of the generator. The maximum short-circuit could be either the maximum symmetrical short-circuit current or the maximum asymmetrical short-circuit current. The three machine reactances determine the maximum short-circuit current available. If the nameplate had the "synchronous reactance" indicated, either of these values could be calculated/determined from the synchronous, transient and subtransient reactances. My recommended first sentence of the second paragraph should read as follows: "Nameplates for all stationary generators and portable generators rated more than 15 kw shall also give the power factor, the synchronous, transient and subtransient reactances, the insulation class and the time rating." Degnan, James E. I am voting negative on the requirement for the short circuit current marking on generator labels. The system the generator is applied to must be considered when determining the short circuit ratings of any down stream components. On some systems we find that the zero sequence reactance and the related single phase line to ground fault becomes the critical factor in determining the ratings of components close to the generator. The critical element can change to a three phase bolted fault as you go further into the distribution system. Also, the generator itself has no influence on whether it is solidly grounded, impedance grounded, or ungrounded; all of which lead to different short circuit values. It really isn't practical to put all of the data needed to properly determine fault currents on a label for an item of equipment that could see a variety of applications.

6 First Revision No NFPA [ Section No ] Ampacity of Conductors. (A) General. The ampacity of the conductors from the generator output terminals to the first distribution device(s) containing overcurrent protection shall not be less than 115 percent of the nameplate current rating of the generator. It shall be permitted to size the neutral conductors in accordance with Conductors that must carry ground-fault currents shall not be smaller than required by (A). Neutral conductors of dc generators that must carry ground-fault currents shall not be smaller than the minimum required size of the largest conductor. Exception: Where the design and operation of the generator prevent overloading, the ampacity of the conductors shall not be less than 100 percent of the nameplate current rating of the generator. (B) Overcurrent Protection Provided. Where the generator set is equipped with a listed overcurrent protective device, including a combination of a current transformer and overcurrent relay, conductors shall be permitted to be tapped from the load side of the protected terminals in accordance with (B). Submitter Information Verification Submitter Full Name: CMP 13 Organization: [ Not Specified ] Street Address: City: State: Zip: Submittal Date: Mon Jan 12 14:54:02 EST 2015 Committee Statement Committee Statement: Response Message: (B) has been added to clarify that feeder tap rules can be used if the generator is equipped with an overcurrent relay or other over overcurrent device. Public Input No NFPA [Section No ] Ballot Results This item has passed ballot 20 Eligible Voters 1 Not Returned 18 Affirmative All 1 Affirmative with Comments 0 Negative with Comments 0 Abstention Not Returned Paulsen, Shawn Affirmative All of 144 4/16/ :28 AM

7 Adams, Martin D. Brady, Brian B. Caron, Daniel J. Conrad, James S. Croushore, Timothy M. Currin, Jr., Richard D. Czarnecki, Neil A. Daugherty, Herbert H. Degnan, James E. Froemming, Steven F. Keenan, Ronald A. Little, Linda J. Ode, Mark C. Rodriguez, Arnoldo L. Savage, Sr., Michael L. Spina, Mario C. Tobias, Jr., David White, James R. Affirmative with Comment Neeser, Daniel R. The text should be clarified to state listed branch circuit overcurrent protective device which is defined in Article 100. The purpose of the tap conductor source side overcurrent protection is to provide short-circuit protection for the tap conductors. of 144 4/16/ :28 AM

8 First Revision No NFPA [ Section No ] Disconnecting Means Required for Generators and Shutdown of Prime Mover. Generators shall be equipped with a disconnect(s), lockable in the open position by means of which the generator and all protective devices and control apparatus are able to be disconnected entirely from the circuits supplied by the generator except where the following conditions apply: (0) Portable generators are cord- and plug-connected, or (0) Both of the following conditions apply: 0. The driving means for the generator can be readily shut down, is rendered incapable of restarting, and is lockable in the OFF position in accordance with The generator is not arranged to operate in parallel with another generator or other source of voltage. Informational Note: See UL , Standard for Safety of Stationary Engine Generator Assemblies. (A) Disconnecting Means. Generators other than cord- and plug-connected portable shall have one or more disconnecting means that simultaneously disconnect all ungrounded conductors. Each disconnecting means shall be lockable in the open position in accordance with (B) Shutdown of Prime Mover. Generators shall have provisions to shut down the prime mover. The means of shutdown shall: (1) Be equipped with provisions to disable all prime mover start control circuits to render the prime mover incapable of starting (2) Initiate a shutdown mechanism that requires a mechanical reset Generators with greater than 15 kw rating shall be provided with an additional requirement to shut down the prime mover. The additional shutdown means shall be located outside the equipment room or generator weatherproof housing enclosure. The requirement in (B) shall be permitted to satisfy the requirements of (A) where it is capable of being locked in the open position in accordance with (C) Generators Installed in Parallel. Where a generator is installed in parallel with other generators, the provisions of (A) shall be capable of isolating the generator output terminals from the paralleling equipment. The disconnecting means shall not be required to be located at the generator. Submitter Information Verification Submitter Full Name: CMP 13 Organization: [ Not Specified ] Street Address: City: State: Zip: Submittal Date: Fri Jan 16 12:25:08 EST 2015 Committee Statement of 144 4/16/ :28 AM

9 of 144 4/16/ :28 AM Committee Statement: The requirements for generator disconnecting means and disconnecting of the prime mover are clarified in this revision. A new requirement was added to require shutdown of the prime mover for generators greater than 15kW. This additional requirement is necessary to provide a remote shutdown means in the event of an emergency. The revised text in (C) clarifies that where generators are installed in parallel it is not necessary to provide a disconnecting means at each generator and at the paralleling equipment. Response Message: Public Input No NFPA [Section No ] Public Input No NFPA [Section No ] Public Input No NFPA [Section No ] Ballot Results This item has passed ballot 20 Eligible Voters 1 Not Returned 16 Affirmative All 2 Affirmative with Comments 1 Negative with Comments 0 Abstention Not Returned Paulsen, Shawn Affirmative All Adams, Martin D. Caron, Daniel J. Conrad, James S. Croushore, Timothy M. Currin, Jr., Richard D. Czarnecki, Neil A. Daugherty, Herbert H. Degnan, James E. Froemming, Steven F. Keenan, Ronald A. Little, Linda J. Neeser, Daniel R. Savage, Sr., Michael L. Spina, Mario C. Tobias, Jr., David White, James R. Affirmative with Comment Brady, Brian B. We are pleased with the progress this revision makes to help clarify this important requirement. We view the major remaining obstacle to making this article more fully understandable would be to change to a clearer term than "Disconnecting Means" for what is essentially the emergency shut down means. The term "disconnecting means is widely used throughout the Code and industry for load carrying switches and circuit breakers so also using it to refer to an emergency shut down/lockout means is often confusing. Ode, Mark C. In new text for (A), make the following correction by adding commas after "Generator" and add "generator" after "portable" to read as follows: Generators, other than cord- and plug-connected portable generator...

10 of 144 4/16/ :28 AM Negative with Comment Rodriguez, Arnoldo L. It is the position of ACC that the existing is written adequately and FR 3661 is not needed. In the event FR 3661 moves forward, then ACC requests that an industrial exemption be added to (B): The shutdown of the prime mover shall not be required in industrial installations, with written safety procedures, where condition of maintenance and supervision ensure that only qualified persons service the equipment.

11 of 144 4/16/ :28 AM First Revision No NFPA [ Section No ] Ground-Fault Circuit-Interrupter Protection for Receptacles on 15-kW or Smaller Portable Generators. All 125-volt, single-phase, 15- and 20-ampere receptacle outlets that are a part of a 15-kW or smaller portable generator either shall have ground-fault circuit-interrupter protection for personnel integral to the generator or receptacle; or shall not be available for use when the 125/250-volt locking-type receptacle is in use. If the generator does not have a 125/250-volt locking-type receptacle, this the requirement to disable the 125-volt, single-phase, 15- and 20-ampere receptacle outlets shall not apply. Exception: If the generator was manufactured or remanufactured prior to January 1, 2015, listed cord sets or devices incorporating listed ground-fault circuit-interrupter protection for personnel identified for portable use shall be permitted. Submitter Information Verification Submitter Full Name: CMP 13 Organization: [ Not Specified ] Street Address: City: State: Zip: Submittal Date: Mon Jan 12 15:43:31 EST 2015 Committee Statement Committee Statement: TIA 14-2, issued in October 2013, was issued to allow listed cord sets in lieu of the GFCI requirements for portable generators manufactured or rebuilt prior to Jan 1, This First Revision accepts the TIA language as permanent code text in the 2017 NEC version with certain editorial changes. Response Message: Public Input No. 22-NFPA [Section No ] Public Input No NFPA [Section No ] Public Input No NFPA [Section No ] Public Input No NFPA [Section No ] Ballot Results This item has passed ballot 20 Eligible Voters 1 Not Returned 17 Affirmative All 0 Affirmative with Comments 1 Negative with Comments 1 Abstention Not Returned Paulsen, Shawn

12 Affirmative All Adams, Martin D. Caron, Daniel J. Conrad, James S. Croushore, Timothy M. Currin, Jr., Richard D. Czarnecki, Neil A. Daugherty, Herbert H. Degnan, James E. Froemming, Steven F. Keenan, Ronald A. Neeser, Daniel R. Ode, Mark C. Rodriguez, Arnoldo L. Savage, Sr., Michael L. Spina, Mario C. Tobias, Jr., David White, James R. Negative with Comment Little, Linda J. We are voting negative on the action to create FR 3604 with the following statement: The committee statement infers that this FR and all the associated public inputs seek only to align this section with the action of TIA That is incorrect. PI 2572 seeks to provide additional clarity for users of the NEC in PI 2572 suggests prescriptive requirements for unbonded (floating neutral) generators, bonded neutral generators and a new informational note. The suggested revisions in PI 2572 should have been accepted to incorporate the action of TIA 14-2 and provide NEC users with significant clarity and usability where is applied. Abstention Brady, Brian B. As stated in Article 90.2(A), the National Electrical Code's scope is explicitly limited "the installation of electrical conductors, equipment and raceways" and by definition PORTABLE generator sets of 15kW or less are not installed but rather used like any other tool on whatever task is at hand. The equipment design requirements of this article are outside of the scope of the NEC and belong in the applicable product standard. of 144 4/16/ :28 AM

13 0 of 144 4/16/ :28 AM First Revision No NFPA [ Section No ] Scope. The provisions of this article shall apply This article applies to all stationary installations of storage batteries. Informational Note: The following standards are frequently referenced for the installation of stationary batteries: (1) IEEE , Recommended Practice for Installation Design and Installation of Vented Lead-Acid Batteries for Stationary Applications (2) IEEE , Recommended Practice for Sizing Vented Lead-Acid Storage Batteries for Stationary Applications (3) IEEE , Recommended Practice for Installation and Maintenance of Nickel-Cadmium Batteries for Photovoltaic (PV) Systems (4) IEEE , Recommended Practice for Installation Design, and Installation of Valve- Regulated Lead-Acid Batteries for Stationary Applications (5) IEEE (Rev. 2003), IEEE Guide for the Protection of Stationary Battery Systems (6) IEEE , Recommended Practice for Stationary Battery Spill Containment and Management (7) IEEE 1635/ASHRAE , Guide for the Ventilation and Thermal Management of Stationary Battery Installations (8) UL 1973, Batteries for Use in Light Electric Rail (LER) Applications and Stationary Applications (9) UL Subject 2436, Spill Containment for Stationary Lead Acid Battery Systems (10) UL 1989, Standby Batteries Submitter Information Verification Submitter Full Name: CMP 13 Organization: [ Not Specified ] Street Address: City: State: Zip: Submittal Date: Thu Jan 15 14:47:23 EST 2015 Committee Statement Committee Statement: The scope has been revised to remove the requirement in accordance with the NEC Style Manual. The standards added to the informational note are applicable to the installation of stationary battery systems. The committee understands that scope statements are under the purview of the NEC correlating committee. Response Message: Public Input No NFPA [Section No ] Ballot Results

14 1 of 144 4/16/ :28 AM This item has passed ballot 20 Eligible Voters 1 Not Returned 19 Affirmative All 0 Affirmative with Comments 0 Negative with Comments 0 Abstention Not Returned Paulsen, Shawn Affirmative All Adams, Martin D. Brady, Brian B. Caron, Daniel J. Conrad, James S. Croushore, Timothy M. Currin, Jr., Richard D. Czarnecki, Neil A. Daugherty, Herbert H. Degnan, James E. Froemming, Steven F. Keenan, Ronald A. Little, Linda J. Neeser, Daniel R. Ode, Mark C. Rodriguez, Arnoldo L. Savage, Sr., Michael L. Spina, Mario C. Tobias, Jr., David White, James R.

15 2 of 144 4/16/ :28 AM First Revision No NFPA [ Section No (A) ] (A) Dissimilar Metals Corrosion Prevention. Where mating dissimilar metals, antioxidant material suitable for the battery connection shall be used where recommended by the battery manufacturer. Informational Note: The battery manufacturer s installation and instruction manual can be used for guidance for acceptable materials. Submitter Information Verification Submitter Full Name: CMP 13 Organization: [ Not Specified ] Street Address: City: State: Zip: Submittal Date: Fri Jan 16 09:20:53 EST 2015 Committee Statement Committee Statement: The term dissimilar metals has been replaced with corrosion prevention to align with the content of this section. Not all batteries, especially those with spade terminals, require antioxidant. Antioxidant grease should only be used when recommended by the battery manufacturer. Some antioxidant materials can actually damage battery containers (cases). Response Message: Public Input No NFPA [Section No (A)] Ballot Results This item has passed ballot 20 Eligible Voters 1 Not Returned 19 Affirmative All 0 Affirmative with Comments 0 Negative with Comments 0 Abstention Not Returned Paulsen, Shawn Affirmative All Adams, Martin D. Brady, Brian B. Caron, Daniel J. Conrad, James S. Croushore, Timothy M. Currin, Jr., Richard D. Czarnecki, Neil A.

16 Daugherty, Herbert H. Degnan, James E. Froemming, Steven F. Keenan, Ronald A. Little, Linda J. Neeser, Daniel R. Ode, Mark C. Rodriguez, Arnoldo L. Savage, Sr., Michael L. Spina, Mario C. Tobias, Jr., David White, James R. 3 of 144 4/16/ :28 AM

17 4 of 144 4/16/ :28 AM First Revision No NFPA [ Section No (C) ] (C) Battery Terminals. Electrical connections to the battery, and the cable(s) between cells on separate levels or racks, shall not put mechanical strain on the battery terminals. Terminal plates shall be used where practicable. Informational Note: Conductors are commonly pre-formed to eliminate stress on battery terminations. Fine stranded cables may also eliminate the stress on battery terminations. See the manufacturer s instructions for guidance. Submitter Information Verification Submitter Full Name: CMP 13 Organization: [ Not Specified ] Street Address: City: State: Zip: Submittal Date: Fri Jan 16 09:25:19 EST 2015 Committee Statement Committee Statement: Add a new Informational Note. Rigidity between units in a battery system can cause damage to the posts and containers. Fine stranded cables (a.k.a. welding cables) are widely used in the industry to provide needed flexibility. Proper crimping is necessary, and should follow the manufacturer s guidance. Some factory-made connectors are pre-formed. Response Message: Public Input No NFPA [Section No (C)] Ballot Results This item has passed ballot 20 Eligible Voters 1 Not Returned 19 Affirmative All 0 Affirmative with Comments 0 Negative with Comments 0 Abstention Not Returned Paulsen, Shawn Affirmative All Adams, Martin D. Brady, Brian B. Caron, Daniel J. Conrad, James S. Croushore, Timothy M. Currin, Jr., Richard D.

18 Czarnecki, Neil A. Daugherty, Herbert H. Degnan, James E. Froemming, Steven F. Keenan, Ronald A. Little, Linda J. Neeser, Daniel R. Ode, Mark C. Rodriguez, Arnoldo L. Savage, Sr., Michael L. Spina, Mario C. Tobias, Jr., David White, James R. 5 of 144 4/16/ :28 AM

19 6 of 144 4/16/ :28 AM First Revision No NFPA [ Section No (B) ] (B) Remote Actuation. Where a disconnecting means, located in accordance with 480.6(A), is provided with remote controls to activate the disconnecting means of a battery and the controls for the disconnecting means are not located within sight of a the stationary battery system, the disconnecting means shall be capable of being locked in the open position, in accordance with , and the location of the controls shall be field marked on the disconnecting means. Submitter Information Verification Submitter Full Name: CMP 13 Organization: [ Not Specified ] Street Address: City: State: Zip: Submittal Date: Fri Jan 16 13:03:54 EST 2015 Committee Statement Committee Statement: Response Message: The committee intends for the battery disconnect to be located within sight of the battery. This revision clarifies the requirements for providing remote actuation of the battery disconnect when the remote controls are not within sight of the battery system. Ballot Results This item has passed ballot 20 Eligible Voters 1 Not Returned 19 Affirmative All 0 Affirmative with Comments 0 Negative with Comments 0 Abstention Not Returned Paulsen, Shawn Affirmative All Adams, Martin D. Brady, Brian B. Caron, Daniel J. Conrad, James S. Croushore, Timothy M. Currin, Jr., Richard D. Czarnecki, Neil A. Daugherty, Herbert H.

20 Degnan, James E. Froemming, Steven F. Keenan, Ronald A. Little, Linda J. Neeser, Daniel R. Ode, Mark C. Rodriguez, Arnoldo L. Savage, Sr., Michael L. Spina, Mario C. Tobias, Jr., David White, James R. 7 of 144 4/16/ :28 AM

21 First Revision No NFPA [ Section No (D) ] (D) Notification. The disconnecting means shall be legibly marked in the field. A label with the marking shall be placed in a conspicuous location near the battery if a disconnecting means is not provided. The marking shall be of sufficient durability to withstand the environment involved and shall include the following: (1) Nominal battery voltage (2) Maximum available short-circuit fault current derived from the stationary battery system (3) Date the fault current calculation was performed (4) The battery disconnecting means shall be marked in accordance with Informational Note No. 1: Battery equipment suppliers can provide information about short-circuit current on any particular battery model. Informational Note No. 2: The available fault-current marking(s) addressed in 480.6(D)(2) is related to required short circuit current ratings of equipment. NFPA 70E-2015, Standard for Electrical Safety in the Workplace, provides assistance in determining the severity of potential exposure, planning safe work practices, and selecting personal protective equipment. Submitter Information Verification Submitter Full Name: CMP 13 Organization: [ Not Specified ] Street Address: City: State: Zip: Submittal Date: Fri Jan 16 09:35:20 EST 2015 Committee Statement Committee Statement: The maximum available fault current is a necessary value in determining the appropriate rating of the battery system disconnect. Using only the battery short circuit current rating may not provide an accurate system available fault current value. The new Informational Note No.2 provides the user of the code with necessary information related to arc flash risk assessments in NFPA 70E. The committee requests that the NEC Correlating Committee appoint a task group to correlate the use of the phrases available short circuit current and available fault current. Response Message: Public Input No NFPA [Section No (D)] Ballot Results This item has passed ballot 20 Eligible Voters 1 Not Returned 17 Affirmative All 2 Affirmative with Comments 0 Negative with Comments 0 Abstention 8 of 144 4/16/ :28 AM

22 Not Returned Paulsen, Shawn Affirmative All Adams, Martin D. Brady, Brian B. Caron, Daniel J. Conrad, James S. Croushore, Timothy M. Currin, Jr., Richard D. Czarnecki, Neil A. Daugherty, Herbert H. Degnan, James E. Froemming, Steven F. Keenan, Ronald A. Ode, Mark C. Rodriguez, Arnoldo L. Savage, Sr., Michael L. Spina, Mario C. Tobias, Jr., David White, James R. Affirmative with Comment Little, Linda J. We are voting affirmative on the action to create FR 3643 with the following statement: The action to delete short-circuit and replace it with fault is incorrect and misleading. Battery manufacturers provide available shortcircuit current values not fault current values. It is apparent that CMP-13 agreed with the intent of PI 2634 which is associated with this FR. The voltage and available short-circuit current markings required in 480.6(D) exist to allow the installer/maintainer to determine the necessary arc rated personal protective equipment (PPE) when performing justified energized work on the battery system. In order to apply the arc flash PPE tables in NFPA 70E, the system available short-circuit current must be determined. When dealing with a battery system, the available short-circuit current must be obtained from the battery manufacturer and must be provided on the equipment. Neeser, Daniel R. We in support of this concept. However, the terminology should be change from fault current to short-circuit current in (D)(2), D(3), and the IN. In addition, the Informational Note should include addition of underlined: required interrupting ratings and short-circuit current ratings of equipment 9 of 144 4/16/ :28 AM

23 First Revision No NFPA [ Section No ] Insulation of Batteries Not Over 250 Volts. This section shall apply to storage batteries having cells connected so as to operate at a nominal battery voltage of not over 250 volts. Batteries constructed of an electrically conductive container shall have insulating support if a voltage is present between the container and ground. (A) Vented Lead-Acid Batteries. Cells and multi-cell batteries with covers sealed to containers of nonconductive, heat-resistant material shall not require additional insulating support. (A) Vented Alkaline-Type Batteries. Cells with covers sealed to containers of nonconductive, heat-resistant material shall require no additional insulation support. Cells in containers of conductive material shall be installed in trays of nonconductive material with not more than 20 cells (24 volts, nominal) in the series circuit in any one tray. (A) Rubber Containers. Cells in rubber or composition containers shall require no additional insulating support where the total nominal voltage of all cells in series does not exceed 150 volts. Where the total voltage exceeds 150 volts, batteries shall be sectionalized into groups of 150 volts or less, and each group shall have the individual cells installed in trays or on racks. (A) Sealed Cells or Batteries. Sealed cells and multicompartment sealed batteries constructed of nonconductive, heat-resistant material shall not require additional insulating support. Batteries constructed of a conducting container shall have insulating support if a voltage is present between the container and ground. Submitter Information Verification Submitter Full Name: CMP 13 Organization: [ Not Specified ] Street Address: City: State: Zip: Submittal Date: Fri Jan 16 09:49:10 EST 2015 Committee Statement Committee Statement: The content of this section discusses battery designs (such a rubber containers and metallic containers for lead-acid cells) which do not exist and have not existed for at least 30 years. There are new technologies that have metallic containers but the containers are all isolated from the battery voltage. Response Message: Public Input No NFPA [Section No ] Public Input No NFPA [Section No ] Ballot Results This item has passed ballot 20 Eligible Voters 1 Not Returned 0 of 144 4/16/ :28 AM

24 1 of 144 4/16/ :28 AM 19 Affirmative All 0 Affirmative with Comments 0 Negative with Comments 0 Abstention Not Returned Paulsen, Shawn Affirmative All Adams, Martin D. Brady, Brian B. Caron, Daniel J. Conrad, James S. Croushore, Timothy M. Currin, Jr., Richard D. Czarnecki, Neil A. Daugherty, Herbert H. Degnan, James E. Froemming, Steven F. Keenan, Ronald A. Little, Linda J. Neeser, Daniel R. Ode, Mark C. Rodriguez, Arnoldo L. Savage, Sr., Michael L. Spina, Mario C. Tobias, Jr., David White, James R.

25 First Revision No NFPA [ Section No ] Racks and Trays Battery Support Systems. Racks and trays shall comply with 480.8(A) and (B). For battery chemistries with corrosive electrolyte, the structure that supports the battery shall be resistant to deteriorating action by the electrolyte. Metallic structures shall be provided with nonconducting support members for the cells, or shall be constructed with a continuous insulating material. Paint alone shall not be considered as an insulating material. The terminals of all cells or multi-cell units shall be readily accessible for readings, inspection, and cleaning where required by the equipment design. One side of transparent battery containers shall be readily accessible for inspection of the internal components. (A) Racks. Racks, as required in this article, are rigid frames designed to support cells or trays. They shall be substantial and be made of one of the following: (0) Metal, treated so as to be resistant to deteriorating action by the electrolyte and provided with nonconducting members directly supporting the cells or with continuous insulating material other than paint on conducting members (0) Other construction such as fiberglass or other suitable nonconductive materials (B) Trays. Trays are frames, such as crates or shallow boxes usually of wood or other nonconductive material, constructed or treated so as to be resistant to deteriorating action by the electrolyte. (C) Accessibility. Submitter Information Verification Submitter Full Name: CMP 13 Organization: [ Not Specified ] Street Address: City: State: Zip: Submittal Date: Fri Jan 16 09:54:57 EST 2015 Committee Statement Committee Statement: Batteries may be installed in racks, cabinets, trays, containers, metal structures (VRLA), on the floor or a multitude of other configurations. Battery support systems must be resistant to corrosion from electrolytes which are present in the battery system to maintain the appropriate support of the batteries and provide reliable service. Response Message: Public Input No NFPA [Section No (A)] Public Input No NFPA [Section No (B)] Ballot Results This item has passed ballot 20 Eligible Voters 2 of 144 4/16/ :28 AM

26 1 Not Returned 19 Affirmative All 0 Affirmative with Comments 0 Negative with Comments 0 Abstention Not Returned Paulsen, Shawn Affirmative All Adams, Martin D. Brady, Brian B. Caron, Daniel J. Conrad, James S. Croushore, Timothy M. Currin, Jr., Richard D. Czarnecki, Neil A. Daugherty, Herbert H. Degnan, James E. Froemming, Steven F. Keenan, Ronald A. Little, Linda J. Neeser, Daniel R. Ode, Mark C. Rodriguez, Arnoldo L. Savage, Sr., Michael L. Spina, Mario C. Tobias, Jr., David White, James R. 3 of 144 4/16/ :28 AM

27 First Revision No NFPA [ Section No (A) ] (A) Ventilation. Provisions appropriate to the battery technology shall be made for sufficient diffusion and ventilation of gases from the battery, if present, to prevent the accumulation of an explosive mixture. Informational Note No. 1: See NFPA , Fire Code, Chapter 52, for ventilation considerations for specific battery chemistries. Informational Note No. 2: Some battery technologies do not require ventilation. Informational Note No. 3: For additional information on the ventilation of stationary battery systems, see IEEE Std /ASHRAE Guideline Guide for the Ventilation and Thermal Management of Batteries for Stationary Applications. Submitter Information Verification Submitter Full Name: CMP 13 Organization: [ Not Specified ] Street Address: City: State: Zip: Submittal Date: Fri Jan 16 10:02:26 EST 2015 Committee Statement Committee Statement: This guide provides guidance for ventilation of various types of batteries in a variety of enclosures and operating conditions. The focus is to maximize battery reliability as well as the safety of personnel and equipment. This guide was jointly developed by the IEEE and ASHRAE. Response Message: Public Input No NFPA [Section No (A)] Ballot Results This item has passed ballot 20 Eligible Voters 1 Not Returned 19 Affirmative All 0 Affirmative with Comments 0 Negative with Comments 0 Abstention Not Returned Paulsen, Shawn Affirmative All Adams, Martin D. Brady, Brian B. Caron, Daniel J. Conrad, James S. 4 of 144 4/16/ :28 AM

28 Croushore, Timothy M. Currin, Jr., Richard D. Czarnecki, Neil A. Daugherty, Herbert H. Degnan, James E. Froemming, Steven F. Keenan, Ronald A. Little, Linda J. Neeser, Daniel R. Ode, Mark C. Rodriguez, Arnoldo L. Savage, Sr., Michael L. Spina, Mario C. Tobias, Jr., David White, James R. 5 of 144 4/16/ :28 AM

29 6 of 144 4/16/ :28 AM First Revision No NFPA [ Section No (D) ] (D) Top Terminal Batteries. Where top terminal batteries are installed on tiered racks or on shelves of battery cabinets, working space in accordance with the battery manufacturer s instructions shall be provided between the highest point on a cell and the row, shelf, or ceiling above that point. Informational Note: Battery manufacturer s installation instructions typically define how much top working space is necessary for a particular battery model. IEEE , IEEE Recommended Practice for Installation Design and Installation of Valve-Regulated Lead-Acid Batteries for Stationary Applications, provides guidance for top clearance of valve-regulated lead-acid batteries, which are commonly used in battery cabinets. Submitter Information Verification Submitter Full Name: CMP 13 Organization: [ Not Specified ] Street Address: City: State: Zip: Submittal Date: Fri Jan 16 10:04:25 EST 2015 Committee Statement Committee Statement: The requirements of this section are modified to add battery cabinets to address adequate working space clearances for maintenance activities. The existing Informational Note is deleted as it is covered in the existing requirement. The new informational note is added to reference IEEE 1187 which provides information on top clearances proportional to the depth of the cabinet. Response Message: Public Input No NFPA [Section No (D)] Ballot Results This item has passed ballot 20 Eligible Voters 1 Not Returned 19 Affirmative All 0 Affirmative with Comments 0 Negative with Comments 0 Abstention Not Returned Paulsen, Shawn Affirmative All Adams, Martin D.

30 Brady, Brian B. Caron, Daniel J. Conrad, James S. Croushore, Timothy M. Currin, Jr., Richard D. Czarnecki, Neil A. Daugherty, Herbert H. Degnan, James E. Froemming, Steven F. Keenan, Ronald A. Little, Linda J. Neeser, Daniel R. Ode, Mark C. Rodriguez, Arnoldo L. Savage, Sr., Michael L. Spina, Mario C. Tobias, Jr., David White, James R. 7 of 144 4/16/ :28 AM

31 8 of 144 4/16/ :28 AM First Revision No NFPA [ Section No (E) ] (E) Egress. A personnel door(s) intended for entrance to, and egress from, rooms designated as battery rooms shall open in the direction of egress and shall be equipped with listed and labeled panic hardware. Submitter Information Verification Submitter Full Name: CMP 13 Organization: [ Not Specified ] Street Address: City: State: Zip: Submittal Date: Fri Jan 16 10:06:35 EST 2015 Committee Statement Committee Statement: Response Message: By adding the words and labeled, it will identify that listed products also need to be labeled. Both terms listed and labeled are defined in Article 100. Public Input No. 912-NFPA [Section No (E)] Ballot Results This item has passed ballot 20 Eligible Voters 1 Not Returned 19 Affirmative All 0 Affirmative with Comments 0 Negative with Comments 0 Abstention Not Returned Paulsen, Shawn Affirmative All Adams, Martin D. Brady, Brian B. Caron, Daniel J. Conrad, James S. Croushore, Timothy M. Currin, Jr., Richard D. Czarnecki, Neil A. Daugherty, Herbert H. Degnan, James E. Froemming, Steven F.

32 9 of 144 4/16/ :28 AM Keenan, Ronald A. Little, Linda J. Neeser, Daniel R. Ode, Mark C. Rodriguez, Arnoldo L. Savage, Sr., Michael L. Spina, Mario C. Tobias, Jr., David White, James R.

33 First Revision No NFPA [ Section No (A) ] (A) Vented Cells. Each vented cell shall be equipped with a flame arrester that is designed to prevent. Informational Note: A flame arrester prevents destruction of the cell due to ignition of gases within the cell by an external spark or flame under normal operating conditions. Submitter Information Verification Submitter Full Name: CMP 13 Organization: [ Not Specified ] Street Address: City: State: Zip: Submittal Date: Fri Jan 16 10:07:44 EST 2015 Committee Statement Committee Statement: An AHJ can verify that a flame arrester is installed, but cannot determine whether the flame arrester is properly designed. The last portion of the section has been revised and moved to a new informational note since verification of the design by an inspector could be difficult. Response Message: Public Input No NFPA [Section No (A)] Ballot Results This item has passed ballot 20 Eligible Voters 1 Not Returned 19 Affirmative All 0 Affirmative with Comments 0 Negative with Comments 0 Abstention Not Returned Paulsen, Shawn Affirmative All Adams, Martin D. Brady, Brian B. Caron, Daniel J. Conrad, James S. Croushore, Timothy M. Currin, Jr., Richard D. Czarnecki, Neil A. Daugherty, Herbert H. 0 of 144 4/16/ :28 AM

34 Degnan, James E. Froemming, Steven F. Keenan, Ronald A. Little, Linda J. Neeser, Daniel R. Ode, Mark C. Rodriguez, Arnoldo L. Savage, Sr., Michael L. Spina, Mario C. Tobias, Jr., David White, James R. 1 of 144 4/16/ :28 AM

35 2 of 144 4/16/ :28 AM First Revision No NFPA [ Section No (B) ] (B) Sealed Cells. Sealed battery or cells shall be equipped with a pressure-release vent to prevent Where the battery is constructed such that an excessive accumulation of gas pressure, or the battery or cell shall be designed to prevent scatter of cell parts in event of a cell explosion could occur within the cell during operation, a pressure-release vent shall be provided. Submitter Information Verification Submitter Full Name: CMP 13 Organization: [ Not Specified ] Street Address: City: State: Zip: Submittal Date: Fri Jan 16 10:09:35 EST 2015 Committee Statement Committee Statement: This revision recognizes that some sealed cells do not require pressure release valves. Response Message: Public Input No NFPA [Section No (B)] Ballot Results This item has passed ballot 20 Eligible Voters 1 Not Returned 19 Affirmative All 0 Affirmative with Comments 0 Negative with Comments 0 Abstention Not Returned Paulsen, Shawn Affirmative All Adams, Martin D. Brady, Brian B. Caron, Daniel J. Conrad, James S. Croushore, Timothy M. Currin, Jr., Richard D. Czarnecki, Neil A. Daugherty, Herbert H. Degnan, James E. Froemming, Steven F.

36 3 of 144 4/16/ :28 AM Keenan, Ronald A. Little, Linda J. Neeser, Daniel R. Ode, Mark C. Rodriguez, Arnoldo L. Savage, Sr., Michael L. Spina, Mario C. Tobias, Jr., David White, James R.

37 First Revision No NFPA [ Section No [Excluding any Sub-Sections] ] Electric motor-driven fire pumps shall have a reliable source of power. Informational Note: See Sections and A from NFPA , Standard for the Installation of Stationary Pumps for Fire Protection, for guidance on the determination of power source reliability. Submitter Information Verification Submitter Full Name: CMP 13 Organization: [ Not Specified ] Street Address: City: State: Zip: Submittal Date: Fri Jan 16 10:15:54 EST 2015 Committee Statement Committee Statement: The determination of the "reliability" of a service connection supplying an electric fire pump is required in The requirement for "reliability" is located in NFPA in and is extracted into the NEC. NFPA 20 has purview over the performance of fire pumps. The explanatory material in Annex A, specifically A provides significant guidelines for the determination of reliability. This proposed Informational Note is necessary to provide users of the NEC with a means to determine reliability. Response Message: Public Input No NFPA [Section No ] Ballot Results This item has passed ballot 20 Eligible Voters 1 Not Returned 19 Affirmative All 0 Affirmative with Comments 0 Negative with Comments 0 Abstention Not Returned Paulsen, Shawn Affirmative All Adams, Martin D. Brady, Brian B. Caron, Daniel J. Conrad, James S. Croushore, Timothy M. 4 of 144 4/16/ :28 AM

38 Currin, Jr., Richard D. Czarnecki, Neil A. Daugherty, Herbert H. Degnan, James E. Froemming, Steven F. Keenan, Ronald A. Little, Linda J. Neeser, Daniel R. Ode, Mark C. Rodriguez, Arnoldo L. Savage, Sr., Michael L. Spina, Mario C. Tobias, Jr., David White, James R. 5 of 144 4/16/ :28 AM

39 First Revision No NFPA [ Section No (C) ] (C) Multibuilding Campus-Style Complexes. If the sources in 695.3(A) are not practicable and the installation is part of a multibuilding campus-style complex, feeder sources shall be permitted if approved by the authority having jurisdiction and installed in accordance with either (C)(1) and (C)(3) or (C)(2) and (C)(3). (1) Feeder Sources. Two or more feeders shall be permitted as more than one power source if such feeders are connected to, or derived from, separate utility services. The connection(s), overcurrent protective device(s), and disconnecting means for such feeders shall meet the requirements of 695.4(B)(1)(b). (2) Feeder and Alternate Source. A feeder shall be permitted as a normal source of power if an alternate source of power independent from the feeder is provided. The connection(s), overcurrent protective device(s), and disconnecting means for such feeders shall meet the requirements of 695.4(B)(1)(b). (3) Selective Coordination. The overcurrent protective device(s) in each disconnecting means shall be selectively coordinated with any other supply-side overcurrent protective device(s). Submitter Information Verification Submitter Full Name: CMP 13 Organization: [ Not Specified ] Street Address: City: State: Zip: Submittal Date: Fri Jan 16 10:21:03 EST 2015 Committee Statement Committee Statement: Response Message: The specific reference to 695.4(B)(1)(b) in both 695.3(C)(1) and (C)(2) provide necessary clarity for disconnect requirements as applied to feeder sources. Public Input No. 266-NFPA [Section No (C) [Excluding any Sub-Sections]] Public Input No. 267-NFPA [Section No (C)(1)] Public Input No. 268-NFPA [Section No (C)(2)] Ballot Results This item has passed ballot 20 Eligible Voters 1 Not Returned 19 Affirmative All 0 Affirmative with Comments 0 Negative with Comments 0 Abstention Not Returned 6 of 144 4/16/ :28 AM

40 Paulsen, Shawn Affirmative All Adams, Martin D. Brady, Brian B. Caron, Daniel J. Conrad, James S. Croushore, Timothy M. Currin, Jr., Richard D. Czarnecki, Neil A. Daugherty, Herbert H. Degnan, James E. Froemming, Steven F. Keenan, Ronald A. Little, Linda J. Neeser, Daniel R. Ode, Mark C. Rodriguez, Arnoldo L. Savage, Sr., Michael L. Spina, Mario C. Tobias, Jr., David White, James R. 7 of 144 4/16/ :28 AM

41 8 of 144 4/16/ :28 AM First Revision No NFPA [ Section No (B) ] (B) Connection Through Disconnecting Means and Overcurrent Device. (1) Number of Disconnecting Means. (a) General. A single disconnecting means and associated overcurrent protective device(s) shall be permitted to be installed between the fire pump power source(s) and one of the following: [20:9.1.2] (1) A listed fire pump controller (2) A listed fire pump power transfer switch (3) A listed combination fire pump controller and power transfer switch (b) (c) Feeder Sources. For systems installed under the provisions of 695.3(C) only, additional disconnecting means and the associated overcurrent protective device(s) shall be permitted as required to comply with other provisions of this Code. On-Site Standby Generator. Where an on-site standby generator is used to supply a fire pump, an additional disconnecting means and an associated overcurrent protective device(s) shall be permitted. (2) Overcurrent Device Selection. Overcurrent devices shall comply with 695.4(B)(2)(a) or (b). (a) Individual Sources. Overcurrent protection for individual sources shall comply with 695.4(B)(2)(a)(1) or (2). (1) Overcurrent protective device(s) shall be rated to carry indefinitely the sum of the locked-rotor current of the largest fire pump motor and the pressure maintenance pump motor(s) and the full-load current of all of the other pump motors and associated fire pump accessory equipment when connected to this power supply. Where the locked-rotor current value does not correspond to a standard overcurrent device size, the next standard overcurrent device size shall be used in accordance with The requirement to carry the locked-rotor currents indefinitely shall not apply to conductors or devices other than overcurrent devices in the fire pump motor circuit(s). The requirement to carry the locked rotor currents indefinitely shall not apply to feeder overcurrent protective devices installed in accordance with 695.3(C). [20: ] (2) Overcurrent protection shall be provided by an assembly listed for fire pump service and complying with the following: a. The overcurrent protective device shall not open within 2 minutes at 600 percent of the full-load current of the fire pump motor(s). b. The overcurrent protective device shall not open with a re-start transient of 24 times the full-load current of the fire pump motor(s). c. The overcurrent protective device shall not open within 10 minutes at 300 percent of the full-load current of the fire pump motor(s). d. The trip point for circuit breakers shall not be field adjustable. [20: ] (b) On-Site Standby Generators. Overcurrent protective devices between an on-site standby generator and a fire pump controller shall be selected and sized to allow for instantaneous pickup of the full pump room load, but shall not be larger than the value selected to comply with to provide short-circuit protection only. [20: ]