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 11 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. 15 Members Eligible to Vote 0 Members Ballots Not Returned 2 Members voted Affirmative with Comment on one or more Revision (Folz, Powell) 3 Members voted Negative on one or more Revision (Cole, Thompson, Wright) 0 Members Abstained on one or more Revision 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 of 44 4/15/2015 1:06 PM First Revision No NFPA [ New Section after ] Available Fault Current. When an industrial control panel is required to be marked with a short circuit current rating in accordance with (4), the available short circuit current at the industrial control panel and the date the short circuit current calculation was performed shall be documented and made available to those authorized to inspect the installation. Submitter Information Verification Submitter Full Name: CMP 11 Organization: [ Not Specified ] Street Address: City: State: Zip: Submittal Date: Thu Jan 15 10:30:50 EST 2015 Committee Statement Committee Statement: This change provides much needed information to aid the electrical inspector when enforcing It will help the inspector ensure that the industrial control panel is installed within its short-circuit current rating. Response Message: Public Input No NFPA [New Section after ] Public Input No NFPA [New Section after ] Ballot Results This item has passed ballot 15 Eligible Voters 0 Not Returned 12 Affirmative All 2 Affirmative with Comments 1 Negative with Comments 0 Abstention Affirmative All Bas, Luis M. Cosic, Zivorad Fahey, Robert G. Fahey, James M. Page 1 of 46

3 of 44 4/15/2015 1:06 PM Guidry, Paul E. Missildine, Jr., James C. Neubauer, Arthur S. Ockuly, George J. Smith, III, Arthur J. Thompson, John M. Widup, Ron Wright, James R. Affirmative with Comment Folz, Stanley J. In addition to the AHJ this information should also be made available to anyone servicing the control panel. Powell, Charles L. For consistency with code language in 110.9, , etc. and the section title, I suggest the following wording Available Fault Current. When an industrial control panel is required to be marked with a short circuit current rating in accordance with (4), the available fault current at the industrial control panel and the date the fault current calculation was performed shall be documented and made available to those authorized to inspect the installation. Negative with Comment Cole, Terry D. There are numerous reasons to oppose requiring additional field labeling of equipment that is located downstream of the main service: 1. Article and Interrupting Rating already requires that equipment intended to interrupt current at fault levels shall have an interrupting rating sufficient for the current that is available. 2. How far down stream is this requirement going to be carried? It is already required by Article for the service and Article and state that the equipment must be applied correctly. The code seems to be repeating itself if we add this change. Further, the exception found in (A) and (B) excludes industry. This would seem to be a correlation issue since the majority of this type of equipment is found in industrial environments. 3. The argument has been made that this would be easier for the inspectors to verify the right equipment is being used. Jurisdictions have the right to require one line diagrams that would require this information for enforcement purposes. 4. The liability to the installer is a major concern because they do not have the ability to control modifications after the initial installation. In a potential lawsuit fingers would be pointed at the installer first. If the owner denies making any modifications or does not have knowledge of any modifications, such as maintenance making changes that were not documented or maintenance people that made changes and left their job, then the installer is left holding the responsibility. This would be true whether the date of the installation is recorded or not. For these reasons this proposal should be resolved. Page 2 of 46

4 of 44 4/15/2015 1:06 PM First Revision No NFPA [ Section No ] Marking. An industrial control panel shall be marked with the following information that is plainly visible after installation: (1) Manufacturer's name, trademark, or other descriptive marking by which the organization responsible for the product can be identified. (2) Supply voltage, number of phases, frequency, and full-load current for each incoming supply circuit. (3) Industrial control panels supplied by more than one power electrical source such that more than one disconnecting means is required to disconnect all power circuits within the control panel shall be marked to indicate that more than one disconnecting means is required to de-energize the equipment. The location of the means necessary to disconnect all circuits 50-volts and over shall be documented and available. (4) Short-circuit current rating of the industrial control panel based on one of the following: a. Short-circuit current rating of a listed and labeled assembly b. Short-circuit current rating established utilizing an approved method Informational Note: ANSI/UL 508A, Standard for Industrial Control Panels, Supplement SB, is an example of an approved method. Exception to (4): Short-circuit current rating markings are not required for industrial control panels containing only control circuit components. (5) If the industrial control panel is intended as service equipment, it shall be marked to identify it as being suitable for use as service equipment. (6) Electrical wiring diagram or the identification number of a separate electrical wiring diagram or a designation referenced in a separate wiring diagram. (7) An enclosure type number shall be marked on the industrial control panel enclosure. Submitter Information Verification Submitter Full Name: CMP 11 Organization: [ Not Specified ] Street Address: City: State: Zip: Submittal Date: Thu Jan 15 09:36:15 EST 2015 Committee Statement Committee Statement: This change addresses a gap in worker safety for voltages over 50V. The current wording warns a service technician that multiple sources of power are present, but provides no guidance in how to locate those sources of power. If an emergency arises Page 3 of 46

5 of 44 4/15/2015 1:06 PM which necessitates disconnection of power but the technician is unfamiliar with the facility there could be a risk to both personnel and property. The error in the Informational Note has been corrected. UL 508A is the standard for industrial control panels that includes Supplement SB. UL 508 is the standard for industrial control 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 15 Eligible Voters 0 Not Returned 15 Affirmative All 0 Affirmative with Comments 0 Negative with Comments 0 Abstention Affirmative All Bas, Luis M. Cole, Terry D. Cosic, Zivorad Fahey, Robert G. Fahey, James M. Folz, Stanley J. Guidry, Paul E. Missildine, Jr., James C. Neubauer, Arthur S. Ockuly, George J. Powell, Charles L. Smith, III, Arthur J. Thompson, John M. Widup, Ron Wright, James R. Page 4 of 46

6 of 44 4/15/2015 1:06 PM First Revision No NFPA [ Section No ] Part-Winding Motors. Where separate overload devices are used with a standard part-winding start induction motor, each half of the motor winding shall be individually protected in accordance with and with a trip current one-half that specified. Each motor-winding connection shall have branch-circuit short-circuit and ground-fault protection rated at not more than one-half that specified by Exception: A short-circuit and ground-fault protective device shall be permitted for both windings if the device will allow the motor to start. Where time-delay (dual-element) fuses are used, they shall be permitted to have a rating not exceeding 150 percent of the motor full-load current. Submitter Information Verification Submitter Full Name: CMP 11 Organization: [ Not Specified ] Street Address: City: State: Zip: Submittal Date: Thu Jan 15 14:01:08 EST 2015 Committee Statement Committee Statement: Response Message: The first half of is a definition and should according to the NEC format be placed in definitions Public Input No. 487-NFPA [Section No ] Ballot Results This item has passed ballot 15 Eligible Voters 0 Not Returned 15 Affirmative All 0 Affirmative with Comments 0 Negative with Comments 0 Abstention Affirmative All Bas, Luis M. Page 5 of 46

7 of 44 4/15/2015 1:06 PM Cole, Terry D. Cosic, Zivorad Fahey, Robert G. Fahey, James M. Folz, Stanley J. Guidry, Paul E. Missildine, Jr., James C. Neubauer, Arthur S. Ockuly, George J. Powell, Charles L. Smith, III, Arthur J. Thompson, John M. Widup, Ron Wright, James R. Page 6 of 46

8 of 44 4/15/2015 1:06 PM First Revision No NFPA [ Section No (A)(1) ] (1) Table Values. Other than for motors built for low speeds (less than 1200 RPM) or high torques, and for multispeed motors, the values given in Table , Table , Table , and Table shall be used to determine the ampacity of conductors or ampere ratings of switches, branch-circuit short-circuit and ground-fault protection, instead of the actual current rating marked on the motor nameplate. Where a motor is marked in amperes, but not horsepower, the horsepower rating shall be assumed to be that corresponding to the value given in Table , Table , Table , and Table , interpolated if necessary. Motors built for low speeds (less than 1200 RPM) or high torques may have higher full-load currents, and multispeed motors will have full-load current varying with speed, in which case the nameplate current ratings shall be used. Exception No. 1: Multispeed motors shall be in accordance with (B) (B)430.22(B) (A) and Exception No. 2: For equipment that employs a shaded-pole or permanent-split capacitor-type fan or blower motor that is marked with the motor type, the full load current for such motor marked on the nameplate of the equipment in which the fan or blower motor is employed shall be used instead of the horsepower rating to determine the ampacity or rating of the disconnecting means, the branch-circuit conductors, the controller, the branch-circuit short-circuit and ground-fault protection, and the separate overload protection. This marking on the equipment nameplate shall not be less than the current marked on the fan or blower motor nameplate. Exception No. 3: For a listed motor-operated appliance that is marked with both motor horsepower and full-load current, the motor full-load current marked on the nameplate of the appliance shall be used instead of the horsepower rating on the appliance nameplate to determine the ampacity or rating of the disconnecting means, the branch-circuit conductors, the controller, the branch-circuit short-circuit and ground-fault protection, and any separate overload protection. Submitter Information Verification Submitter Full Name: CMP 11 Organization: [ Not Specified ] Street Address: City: State: Zip: Submittal Date: Thu Jan 15 14:02:51 EST 2015 Committee Statement Committee Statement: Editorial revision to correct an error. Response Message: Public Input No. 488-NFPA [Section No (A)(1)] Ballot Results Page 7 of 46

9 of 44 4/15/2015 1:06 PM This item has passed ballot 15 Eligible Voters 0 Not Returned 15 Affirmative All 0 Affirmative with Comments 0 Negative with Comments 0 Abstention Affirmative All Bas, Luis M. Cole, Terry D. Cosic, Zivorad Fahey, Robert G. Fahey, James M. Folz, Stanley J. Guidry, Paul E. Missildine, Jr., James C. Neubauer, Arthur S. Ockuly, George J. Powell, Charles L. Smith, III, Arthur J. Thompson, John M. Widup, Ron Wright, James R. Page 8 of 46

10 of 44 4/15/2015 1:06 PM First Revision No NFPA [ Section No (B) ] (B) Wire-Bending Space in Enclosures. Minimum wire-bending space within the enclosures for motor controllers shall be in accordance with Table (B) where measured in a straight line from the end of the lug or wire connector (in the direction the wire leaves the terminal) to the wall or barrier. Where alternate wire termination means are substituted for that supplied by the manufacturer of the controller, they shall be of a type identified by the manufacturer for use with the controller and shall not reduce the minimum wire-bending space. Table (B) Minimum Wire-Bending Space at the Terminals of Enclosed Motor Controllers Wires per Terminal * Size of Wire (AWG or kcmil) 1 2 mm in. mm in and smaller Not specified / / /0 4/ * Where provision for three or more wires per terminal exists, the minimum wire-bending space shall be in accordance with the requirements of Article 312. Supplemental Information File Name B_FR_3012_LM.docx Description Submitter Information Verification Submitter Full Name: CMP 11 Organization: [ Not Specified ] Street Address: City: Page 9 of 46

11 0 of 44 4/15/2015 1:06 PM State: Zip: Submittal Date: Thu Jan 15 14:09:40 EST 2015 Committee Statement Committee Statement: Response Message: Smaller gauge conductors have been added into the table, as these conductors are allowed in (G)(1)&(2). Public Input No NFPA [Section No (B)] Ballot Results This item has passed ballot 15 Eligible Voters 0 Not Returned 15 Affirmative All 0 Affirmative with Comments 0 Negative with Comments 0 Abstention Affirmative All Bas, Luis M. Cole, Terry D. Cosic, Zivorad Fahey, Robert G. Fahey, James M. Folz, Stanley J. Guidry, Paul E. Missildine, Jr., James C. Neubauer, Arthur S. Ockuly, George J. Powell, Charles L. Smith, III, Arthur J. Thompson, John M. Widup, Ron Wright, James R. Page 10 of 46

12 (B) Wire-Bending Space in Enclosures. Minimum wire-bending space within the enclosures for motor controllers shall be in accordance with Table (B) where measured in a straight line from the end of the lug or wire connector (in the direction the wire leaves the terminal) to the wall or barrier. Where alternate wire termination means are substituted for that supplied by the manufacturer of the controller, they shall be of a type identified by the manufacturer for use with the controller and shall not reduce the minimum wire-bending space. Table (B) Minimum Wire-Bending Space at the Terminals of Enclosed Motor Controllers Size of Wire (AWG or kcmil) Wires per Terminal * 1 2 mm in. mm in and smaller Not specified ½ ½ / / /0 4/ * Where provision for three or more wires per terminal exists, the minimum wire-bending space shall be in accordance with the requirements of Article 312. Page 11 of 46

13 1 of 44 4/15/2015 1:06 PM First Revision No NFPA [ Section No (C) ] (C) Dimensions and Space Fixed Terminal Connections. Where these terminal housings enclose rigidly mounted motor terminals, the terminal housing shall be of sufficient size to provide minimum terminal spacings and usable volumes in accordance with Table (C)(1) and Table (C)(2). Table (C)(1) Terminal Spacings Fixed Terminals Minimum Spacing Nominal Volts or less Over Between Line Terminals Between Line Terminals and Other Uninsulated Metal Parts mm in. mm in Table (C)(2) Usable Volumes Fixed Terminals Power-Supply Conductor Size (AWG) Minimum Usable Volume per Power-Supply Conductor cm 3 in and and Supplemental Information File Name C1_FR_3019_LM.docx Description Submitter Information Verification Submitter Full Name: CMP 11 Organization: [ Not Specified ] Street Address: City: State: Zip: Submittal Date: Thu Jan 15 17:11:40 EST 2015 Committee Statement Committee Statement: This change eliminated the gap between the nominal voltages in the table. Page 12 of 46

14 2 of 44 4/15/2015 1:06 PM Response Message: Public Input No. 333-NFPA [Global Input] Ballot Results This item has passed ballot 15 Eligible Voters 0 Not Returned 15 Affirmative All 0 Affirmative with Comments 0 Negative with Comments 0 Abstention Affirmative All Bas, Luis M. Cole, Terry D. Cosic, Zivorad Fahey, Robert G. Fahey, James M. Folz, Stanley J. Guidry, Paul E. Missildine, Jr., James C. Neubauer, Arthur S. Ockuly, George J. Powell, Charles L. Smith, III, Arthur J. Thompson, John M. Widup, Ron Wright, James R. Page 13 of 46

15 (C) Dimensions and Space Fixed Terminal Connections. Where these terminal housings enclose rigidly mounted motor terminals, the terminal housing shall be of sufficient size to provide minimum terminal spacings and usable volumes in accordance with Table (C)(1) and Table (C)(2). Nominal Volts Table (C)(1) Terminal Spacings Fixed Terminals Between Line Terminals Minimum Spacing Between Line Terminals and Other Uninsulated Metal Parts mm in. mm in or less 6 ¼ 6 ¼ Over Power-Supply Conductor Size (AWG) Table (C)(2) Usable Volumes Fixed Terminals Minimum Usable Volume per Power-Supply Conductor cm 3 in and ¼ 8 and ¼ Page 14 of 46

16 13 of 44 4/15/2015 1:06 PM First Revision No NFPA [ Section No (F) ] (F) Separate Terminal Enclosure. The conductors between a stationary motor rated 1 hp or less and the separate terminal enclosure permitted in (B) shall be permitted to be smaller than 14 AWG but not smaller than 18 AWG, provided they have an ampacity as specified in (A). Submitter Information Verification Submitter Full Name: CMP 11 Organization: [ Not Specified ] Street Address: City: State: Zip: Submittal Date: Thu Jan 15 14:17:44 EST 2015 Committee Statement Committee Statement: Response Message: The change eliminates (A) from in this section to properly reference all motors in (A) (G). Public Input No. 489-NFPA [Section No (F)] Ballot Results This item has passed ballot 15 Eligible Voters 0 Not Returned 15 Affirmative All 0 Affirmative with Comments 0 Negative with Comments 0 Abstention Affirmative All Bas, Luis M. Cole, Terry D. Cosic, Zivorad Fahey, Robert G. Fahey, James M. Folz, Stanley J. Guidry, Paul E. Page 15 of 46

17 4 of 44 4/15/2015 1:06 PM Missildine, Jr., James C. Neubauer, Arthur S. Ockuly, George J. Powell, Charles L. Smith, III, Arthur J. Thompson, John M. Widup, Ron Wright, James R. Page 16 of 46

18 5 of 44 4/15/2015 1:06 PM First Revision No NFPA [ Section No (D) ] (D) Single Motor Taps. For group installations described above, the conductors of any tap supplying a single motor shall not be required to have an individual branch-circuit short-circuit and ground-fault protective device, provided they comply with one of the following: (1) No conductor to the motor shall have an ampacity less than that of the branch-circuit conductors. (2) No conductor to the motor shall have an ampacity less than one-third that of the branchcircuit conductors, with a minimum in accordance with The conductors from the point of the tap to the motor overload device shall be not more than 7.5 m (25 ft) long and be protected from physical damage by being enclosed in an approved raceway or by use of other approved means. (3) Conductors from the point of the tap from the branch-circuit branch circuit short-circuit and ground-fault protective device to a listed manual motor controller additionally marked Suitable for Tap Conductor Protection in Group Installations, or to a branch-circuit protective device, shall be permitted to have an ampacity not less than one-tenth the rating or setting of the branch-circuit short-circuit and ground-fault protective device. The conductors from the controller to the motor shall have an ampacity in accordance with The conductors from the point of the tap to the controller(s) shall (1) be suitably protected from physical damage and enclosed either by an enclosed controller or by a raceway and be not more than 3 m (10 ft) long or (2) have an ampacity not less than that of the branch-circuit conductors. (4) Conductors from the point of the tap from the branch circuit to a listed manual motor controller additionally marked Suitable for Tap Conductor Protection in Group Installations, or to a branch-circuit protective device, shall be permitted to have an ampacity not less than one-third that of the branch-circuit conductors. The conductors from the controller to the motor shall have an ampacity in accordance with The conductors from the point of the tap to the controller(s) shall (1) be suitably protected from physical damage and enclosed either by an enclosed controller or by a raceway and be not more than 7.5 m (25 ft) long or (2) have an ampacity not less than that of the branch-circuit conductors. Submitter Information Verification Submitter Full Name: CMP 11 Organization: [ Not Specified ] Street Address: City: State: Zip: Submittal Date: Thu Jan 15 14:27:03 EST 2015 Committee Statement Committee The change provides consistency within the language of this section. Page 17 of 46

19 6 of 44 4/15/2015 1:06 PM Statement: The new subsection allows 25 taps with the same conditions as is allowed in other areas of the NEC. Public Input No NFPA [Section No (D)] Public Input No NFPA [New Section after (D)] Ballot Results This item has passed ballot 15 Eligible Voters 0 Not Returned 15 Affirmative All 0 Affirmative with Comments 0 Negative with Comments 0 Abstention Affirmative All Bas, Luis M. Cole, Terry D. Cosic, Zivorad Fahey, Robert G. Fahey, James M. Folz, Stanley J. Guidry, Paul E. Missildine, Jr., James C. Neubauer, Arthur S. Ockuly, George J. Powell, Charles L. Smith, III, Arthur J. Thompson, John M. Widup, Ron Wright, James R. Page 18 of 46

20 7 of 44 4/15/2015 1:06 PM First Revision No NFPA [ New Section after ] Available Fault Current. The available short circuit current at the motor control center and the date the short circuit current calculation was performed shall be documented and made available to those authorized to inspect the installation. Submitter Information Verification Submitter Full Name: CMP 11 Organization: [ Not Specified ] Street Address: City: State: Zip: Submittal Date: Thu Jan 15 15:03:36 EST 2015 Committee Statement Committee Statement: Inspectors are having an extremely difficult time enforcing proper short circuit current ratings of Motor Control Centers because there is typically no information on the job site as to the available short circuit current at the Motor Control Center. If documentation of the available short circuit current were provided to the electrical inspector, it would be much easier for the inspector to assure that the equipment was being properly protected. Response Message: Public Input No NFPA [Section No (A)] Public Input No NFPA [New Section after ] Ballot Results This item has passed ballot 15 Eligible Voters 0 Not Returned 12 Affirmative All 2 Affirmative with Comments 1 Negative with Comments 0 Abstention Affirmative All Bas, Luis M. Cosic, Zivorad Fahey, Robert G. Page 19 of 46

21 8 of 44 4/15/2015 1:06 PM Fahey, James M. Guidry, Paul E. Missildine, Jr., James C. Neubauer, Arthur S. Ockuly, George J. Smith, III, Arthur J. Thompson, John M. Widup, Ron Wright, James R. Affirmative with Comment Folz, Stanley J. In addition to the AHJ this information should also be made available to anyone servicing the MCC. Powell, Charles L. For consistency with code language in 110.9, , etc. and the section title, I suggest the following wording Available Fault Current. The available fault current at the motor control center and the date the fault current calculation was performed shall be documented and made available to those authorized to inspect the installation. Negative with Comment Cole, Terry D. There are numerous reasons to oppose requiring additional field labeling of equipment that is located downstream of the main service: 1. Article and Interrupting Rating already requires that equipment intended to interrupt current at fault levels shall have an interrupting rating sufficient for the current that is available. 2. How far down stream is this requirement going to be carried? It is already required by Article for the service and Article and state that the equipment must be applied correctly. The code seems to be repeating itself if we add this change. Further, the exception found in (A) and (B) excludes industry. This would seem to be a correlation issue since the majority of this type of equipment is found in industrial environments. 3. The argument has been made that this would be easier for the inspectors to verify the right equipment is being used. Jurisdictions have the right to require one line diagrams that would require this information for enforcement purposes. 4. The liability to the installer is a major concern because they do not have the ability to control modifications after the initial installation. In a potential lawsuit fingers would be pointed at the installer first. If the owner denies making any modifications or does not have knowledge of any modifications, such as maintenance making changes that were not documented or maintenance people that made changes and left their job, then the installer is left holding the responsibility. This would be true whether the date of the installation is recorded or not. For these reasons this proposal should be resolved. Page 20 of 46

22 9 of 44 4/15/2015 1:06 PM First Revision No NFPA [ Section No (A) ] (A) Circuits Containing Power Conversion Equipment. Circuits containing power conversion equipment shall be protected by a branch-circuit shortcircuit and ground-fault protective device in accordance with the following: (1) The rating and type of protection shall be determined by (C)(1), (C)(3), (C)(5), or (C)(6), using the full-load current rating of the motor load as determined by (2) Where maximum branch-circuit short-circuit and ground-fault protective ratings are stipulated for specific device types in the manufacturer's instructions for the power conversion equipment or are otherwise marked on the equipment, they shall not be exceeded even if higher values are permitted by (A)(1). (3) A self-protected combination controller shall only be permitted where specifically identified in the manufacturer s instructions for the power conversion equipment or if otherwise marked on the equipment. Informational Note: The type of protective device, its rating, and its setting are often marked on or provided with the power conversion equipment. (4) Where an instantaneous trip circuit breaker or semiconductor fuses are permitted in accordance with the drive manufacturer s instructions for use as the branch-circuit shortcircuit and ground-fault protective device for listed power conversion equipment, they shall be provided as an integral part of a single listed assembly incorporating both the protective device and power conversion equipment. Informational Note: The type of protective device, its rating, and its setting are often marked on or provided with the power conversion equipment. Submitter Information Verification Submitter Full Name: CMP 11 Organization: [ Not Specified ] Street Address: City: State: Zip: Submittal Date: Thu Jan 15 16:38:31 EST 2015 Committee Statement Committee Statement: Response Message: The inclusion of the short circuit ground fault device within the power conversion equipment from the Manufacturer will assure the proper devices are installed. Public Input No NFPA [New Section after (A)] Ballot Results This item has passed ballot Page 21 of 46

23 0 of 44 4/15/2015 1:06 PM 15 Eligible Voters 0 Not Returned 14 Affirmative All 0 Affirmative with Comments 1 Negative with Comments 0 Abstention Affirmative All Bas, Luis M. Cosic, Zivorad Fahey, Robert G. Fahey, James M. Folz, Stanley J. Guidry, Paul E. Missildine, Jr., James C. Neubauer, Arthur S. Ockuly, George J. Powell, Charles L. Smith, III, Arthur J. Thompson, John M. Widup, Ron Wright, James R. Negative with Comment Cole, Terry D. Protection of the equipment does not require incorporating the protective device within the enclosure. This requirement would take away the ability to protect equipment with external methods and reduce installation flexibility. Article 110.3(B) already requires that the manufactures instructions must be complied with which makes this requirement unnecessary. The NEC is a safety document and this does not seem to be a safety issue, but rather limiting the protection options. Page 22 of 46

24 1 of 44 4/15/2015 1:06 PM First Revision No NFPA [ Section No ] General. Part XII specifies that live parts shall be protected in a an approved manner judged adequate for the hazard involved. Submitter Information Verification Submitter Full Name: CMP 11 Organization: [ Not Specified ] Street Address: City: State: Zip: Submittal Date: Fri Jan 16 12:48:34 EST 2015 Committee Statement Committee Statement: The Panel has modified the language for clarification. Response Message: Public Input No NFPA [Section No ] Ballot Results This item has passed ballot 15 Eligible Voters 0 Not Returned 15 Affirmative All 0 Affirmative with Comments 0 Negative with Comments 0 Abstention Affirmative All Bas, Luis M. Cole, Terry D. Cosic, Zivorad Fahey, Robert G. Fahey, James M. Folz, Stanley J. Guidry, Paul E. Missildine, Jr., James C. Neubauer, Arthur S. Ockuly, George J. Page 23 of 46

25 2 of 44 4/15/2015 1:06 PM Powell, Charles L. Smith, III, Arthur J. Thompson, John M. Widup, Ron Wright, James R. Page 24 of 46

26 3 of 44 4/15/2015 1:06 PM First Revision No NFPA [ Definition: Rated-Load Current. ] Rated-Load Current. The rated-load current for of a hermetic refrigerant motor-compressor is the current resulting when the motor-compressor it is operated at the rated load, rated voltage, and rated frequency of the equipment it serves. Submitter Information Verification Submitter Full Name: CMP 11 Organization: [ Not Specified ] Street Address: City: State: Zip: Submittal Date: Thu Jan 15 12:20:03 EST 2015 Committee Statement Committee Statement: The NEC Style Manual requires that the term being defined not be included in the definition. Response Message: Public Input No NFPA [Definition: Rated-Load Current.] Ballot Results This item has passed ballot 15 Eligible Voters 0 Not Returned 15 Affirmative All 0 Affirmative with Comments 0 Negative with Comments 0 Abstention Affirmative All Bas, Luis M. Cole, Terry D. Cosic, Zivorad Fahey, Robert G. Fahey, James M. Folz, Stanley J. Guidry, Paul E. Missildine, Jr., James C. Page 25 of 46

27 4 of 44 4/15/2015 1:06 PM Neubauer, Arthur S. Ockuly, George J. Powell, Charles L. Smith, III, Arthur J. Thompson, John M. Widup, Ron Wright, James R. Page 26 of 46

28 5 of 44 4/15/2015 1:06 PM First Revision No NFPA [ Section No (B) ] (B) Multimotor and Combination-Load Equipment. Multimotor and combination-load equipment shall be provided with a visible nameplate marked with the maker's name, the rating in volts, frequency and number of phases, minimum supply circuit conductor ampacity, the maximum rating of the branch-circuit short-circuit and ground-fault protective device, and the short-circuit current rating of the motor controllers or industrial control panel. The ampacity shall be calculated by using Part IV and counting all the motors and other loads that will be operated at the same time. The branch-circuit short-circuit and ground-fault protective device rating shall not exceed the value calculated by using Part III. Multimotor or combination-load equipment for use on two or more circuits shall be marked with the above information for each circuit. Exception No. 1: Multimotor and combination-load equipment that is suitable under the provisions of this article for connection to a single 15- or 20-ampere, 120-volt, or a 15-ampere, 208- or 240-volt, single-phase branch circuit shall be permitted to be marked as a single load. Exception No. 2: The minimum supply circuit conductor ampacity and the maximum rating of the branch-circuit short-circuit and ground-fault protective device shall not be required to be marked on a room air conditioner complying with (A). Exception No. 3: Multimotor and combination-load equipment used in one- and two-family dwellings, or cord-and-attachment-plug-connected equipment, or equipment supplied from a branch circuit protected at 60 A or less shall not be required to be marked with a shortcircuit current rating. Submitter Information Verification Submitter Full Name: CMP 11 Organization: [ Not Specified ] Street Address: City: State: Zip: Submittal Date: Thu Jan 15 12:22:17 EST 2015 Committee Statement Committee Statement: Equipment rated 60 amperes and smaller should have the short-circuit current rating marked on the nameplate so that installers can insure the appropriate rated equipment is installed. Response Message: Public Input No NFPA [Section No (B)] Public Input No NFPA [Section No (B)] Ballot Results This item has passed ballot Page 27 of 46

29 6 of 44 4/15/2015 1:06 PM 15 Eligible Voters 0 Not Returned 15 Affirmative All 0 Affirmative with Comments 0 Negative with Comments 0 Abstention Affirmative All Bas, Luis M. Cole, Terry D. Cosic, Zivorad Fahey, Robert G. Fahey, James M. Folz, Stanley J. Guidry, Paul E. Missildine, Jr., James C. Neubauer, Arthur S. Ockuly, George J. Powell, Charles L. Smith, III, Arthur J. Thompson, John M. Widup, Ron Wright, James R. Page 28 of 46

30 7 of 44 4/15/2015 1:06 PM First Revision No NFPA [ New Section after ] Grounding and Bonding. Where multimotor and combination-load equipment is installed outdoors on a roof, an equipment grounding conductor of the wire type shall be installed in outdoor portions of metallic raceway systems that use non-threaded fittings. Submitter Information Verification Submitter Full Name: CMP 11 Organization: [ Not Specified ] Street Address: City: State: Zip: Submittal Date: Thu Jan 15 12:24:40 EST 2015 Committee Statement Committee Statement: Non-threaded conduit systems on rooftops supplying HVACR equipment are subject to movement and damage that results in separation of non threaded conduit or tubing resulting in loss of equipment grounding unless a wire type equipment ground is provided. Rather than ban the use of EMT or non threaded conduit on rooftops, as suggested by PI 1800, adding this requirement satisfactorily addresses the problem. The Panel does not agree with the exception for industrial installations with qualified persons as it does not assure the conduit on the roof will be inspected or observed on a regular basis any more than on a commercial roof. Response Message: Public Input No. 836-NFPA [New Section after 440.8] Public Input No NFPA [New Section after 440.8] Public Input No NFPA [New Section after 440.8] Public Input No NFPA [New Section after 440.8] Ballot Results This item has passed ballot 15 Eligible Voters 0 Not Returned 13 Affirmative All 0 Affirmative with Comments 2 Negative with Comments 0 Abstention Page 29 of 46

31 8 of 44 4/15/2015 1:06 PM Affirmative All Bas, Luis M. Cole, Terry D. Cosic, Zivorad Fahey, Robert G. Fahey, James M. Folz, Stanley J. Guidry, Paul E. Missildine, Jr., James C. Neubauer, Arthur S. Ockuly, George J. Powell, Charles L. Smith, III, Arthur J. Widup, Ron Negative with Comment Thompson, John M. All UL certified metallic conduit, including EMT, is evaluated for its ability to bond the conduit to the connecting fittings thereby ensuring the bonding and grounding of the equipment. The testing in the Standards goes beyond electrical tests and includes rigorous mechanical stress tests. This Panel Action does not address the root cause that is driving this First Revision, and that is the maintenance of all installed equipment regardless of type and location. The forces needed to dislocate conduit from the conduit- fitting is equally likely to dislocate the additional grounding conductor. Adding additional grounding and bonding, a belts and suspenders approach, is allowed in the Code, but will not address what is reported to be poor or ineffective maintenance practices. Wright, James R. The NEC is a minimum standard and does not prevent the use of an equipment grounding conductor in metallic raceways systems. There was inadequate substantiation provided to require the use of an equipment grounding conductor in outdoor portions of metallic raceway systems that use non-threaded fittings. Since the NEC FR reports are often used for research and training, it is problematic that the Panel Statement is inaccurate. The statement includes the following: Non-threaded conduit systems on rooftops supplying HVACR equipment are subject to movement and damage that results in separation of non-threaded conduit or tubing resulting in loss of equipment grounding unless a wire type equipment ground is provided. That is a blanket statement that infers that this situation is a standard occurrence. A PI on which this FR is based PI 4312 refers to those rare instances that the wiring system installation has been damaged and the wire-type EGC is not installed. There is no assurance that the wire type equipment grounding conductor could not also be subject to damage. Page 30 of 46

32 9 of 44 4/15/2015 1:06 PM First Revision No NFPA [ New Section after ] Short-Circuit Current Rating. (A) Installation. Motor controllers of multimotor and combination-load equipment shall not be installed where the available fault current exceeds its short-circuit current rating as marked in accordance with 440.4(B). (B) Documentation. When motor controllers or industrial control panels of multimotor and combination load equipment are required to be marked with a short circuit current rating, the available short circuit current and the date the short circuit current calculation was performed shall be documented and made available to those authorized to inspect the installation. Submitter Information Verification Submitter Full Name: CMP 11 Organization: [ Not Specified ] Street Address: City: State: Zip: Submittal Date: Thu Jan 15 12:37:31 EST 2015 Committee Statement Committee Statement: Section 440.4(B) requires that the equipment short-circuit current rating be marked on certain HVAC equipment. This new section specifically requires that the marked HVAC equipment not be installed where the available short-circuit current exceeds the marked short-circuit current rating. This requirement is similar to (industrial machinery) and (industrial control panels). Inspectors are having an extremely difficult time enforcing proper short-circuit current ratings of HVACR equipment because there is typically no information on the job site as to the available fault current at the HVACR equipment. If documentation of the available fault current were provided to the electrical inspector, it would be much easier for the inspector to assure that the equipment was being properly protected. This change provides that fault current information to the AHJ. Per Exception #3 to 440.4(B) this new requirement does not apply to one and two family dwellings or cord-and-attachment -plug connected equipment. The Panel chose so that it would be in Part I, General. Response Message: Public Input No NFPA [New Section after ] Public Input No NFPA [New Part after II.] Public Input No NFPA [New Section after 440.8] Public Input No NFPA [New Section after ] Page 31 of 46

33 0 of 44 4/15/2015 1:06 PM Ballot Results This item has passed ballot 15 Eligible Voters 0 Not Returned 14 Affirmative All 1 Affirmative with Comments 0 Negative with Comments 0 Abstention Affirmative All Bas, Luis M. Cole, Terry D. Cosic, Zivorad Fahey, Robert G. Fahey, James M. Guidry, Paul E. Missildine, Jr., James C. Neubauer, Arthur S. Ockuly, George J. Powell, Charles L. Smith, III, Arthur J. Thompson, John M. Widup, Ron Wright, James R. Affirmative with Comment Folz, Stanley J. In addition to the AHJ this information should also be made available to anyone servicing this equipment. Page 32 of 46

34 1 of 44 4/15/2015 1:06 PM First Revision No NFPA [ Section No ] Location. Disconnecting means shall be located within sight from, and readily accessible from the air-conditioning or refrigerating equipment. The disconnecting means shall be permitted to be installed on or within the air-conditioning or refrigerating equipment. The disconnecting means shall not be located on panels that are designed to allow access to the air-conditioning or refrigeration equipment or to obscure the equipment nameplate(s). Exception No. 1: Where the disconnecting means provided in accordance with (A) is lockable in accordance with and the refrigerating or air-conditioning equipment is essential to an industrial process in a facility with written safety procedures, and where the conditions of maintenance and supervision ensure that only qualified persons service the equipment, a disconnecting means within sight from the equipment shall not be required. Exception No. 2: Where an attachment plug and receptacle serve as the disconnecting means in accordance with , their location shall be accessible but shall not be required to be readily accessible. Informational Note No. 1: See Parts VII and IX of Article 430 for additional requirements. Informational Note No. 2: See Submitter Information Verification Submitter Full Name: CMP 11 Organization: [ Not Specified ] Street Address: City: State: Zip: Submittal Date: Thu Jan 15 13:12:38 EST 2015 Committee Statement Committee Statement: The existing Code text requires the disconnecting means to be mounted so that it is readily accessible from the equipment. Punctuation was added for clarification. Response Message: Public Input No. 20-NFPA [Section No ] Ballot Results This item has passed ballot 15 Eligible Voters Page 33 of 46

35 2 of 44 4/15/2015 1:06 PM 0 Not Returned 15 Affirmative All 0 Affirmative with Comments 0 Negative with Comments 0 Abstention Affirmative All Bas, Luis M. Cole, Terry D. Cosic, Zivorad Fahey, Robert G. Fahey, James M. Folz, Stanley J. Guidry, Paul E. Missildine, Jr., James C. Neubauer, Arthur S. Ockuly, George J. Powell, Charles L. Smith, III, Arthur J. Thompson, John M. Widup, Ron Wright, James R. Page 34 of 46

36 3 of 44 4/15/2015 1:06 PM First Revision No NFPA [ Section No ] Motor-Compressor(s) With or Without Additional Motor Loads. Conductors supplying one or more motor-compressor(s) with or without an additional motor load(s) shall have an ampacity not less than the sum of each of the following: (1) The sum of the rated-load or branch-circuit selection current ratings, whichever is larger greater, of all the motor-compressor( s) (2) plus The sum of the full-load currents current rating of the all other motors, (3) plus 25 percent of the highest motor or motor-compressor rating or motor full load current in the group. Exception No. 1: Where the circuitry is interlocked so as to prevent the starting and running of a second motor-compressor or group of motor-compressors, the conductor size shall be determined from the largest motor-compressor or group of motor-compressors that is to be operated at a given time. Exception No. 2: The branch-circuit conductors for room air conditioners shall be in accordance with Part VII of Article 440. Submitter Information Verification Submitter Full Name: CMP 11 Organization: [ Not Specified ] Street Address: City: State: Zip: Submittal Date: Thu Jan 15 13:19:52 EST 2015 Committee Statement Committee Statement: The proposed change provides a list format which enhances the usability of this section, as it has enhanced the usability of , and does not change the calculation. Exception No. 1 and 2 to remain unchanged. This section does not include non-motor loads. Response Message: Public Input No NFPA [Section No ] Ballot Results This item has passed ballot 15 Eligible Voters 0 Not Returned 15 Affirmative All Page 35 of 46

37 4 of 44 4/15/2015 1:06 PM 0 Affirmative with Comments 0 Negative with Comments 0 Abstention Affirmative All Bas, Luis M. Cole, Terry D. Cosic, Zivorad Fahey, Robert G. Fahey, James M. Folz, Stanley J. Guidry, Paul E. Missildine, Jr., James C. Neubauer, Arthur S. Ockuly, George J. Powell, Charles L. Smith, III, Arthur J. Thompson, John M. Widup, Ron Wright, James R. Page 36 of 46

38 5 of 44 4/15/2015 1:06 PM First Revision No NFPA [ Section No ] Leakage-Current Detector-Interrupter (LCDI) and Arc-Fault Circuit Interrupter (AFCI) Protection Devices. Single-phase cord- and plug-connected room air conditioners shall be provided with one of the following factory-installed LCDI or AFCI protection. The LCDI or AFCI protection devices: (1) Leakage-current detector-interruptor (LCDI) (2) Arc-fault circuit interrupter (AFCI) (3) Heat detecting circuit interrupter (HDCI) The protection device shall be an integral part of the attachment plug or be located in the power supply cord within 300 mm (12 in.) of the attachment plug. Submitter Information Verification Submitter Full Name: CMP 11 Organization: [ Not Specified ] Street Address: City: State: Zip: Submittal Date: Fri Jan 16 13:02:57 EST 2015 Committee Statement Committee Statement: Response Message: This change recognizes the addition of a new type of protection. The addition of an Informational Note describing an HDCI is not necessary. Public Input No NFPA [Section No ] Ballot Results This item has passed ballot 15 Eligible Voters 0 Not Returned 15 Affirmative All 0 Affirmative with Comments 0 Negative with Comments 0 Abstention Affirmative All Bas, Luis M. Page 37 of 46

39 6 of 44 4/15/2015 1:06 PM Cole, Terry D. Cosic, Zivorad Fahey, Robert G. Fahey, James M. Folz, Stanley J. Guidry, Paul E. Missildine, Jr., James C. Neubauer, Arthur S. Ockuly, George J. Powell, Charles L. Smith, III, Arthur J. Thompson, John M. Widup, Ron Wright, James R. Page 38 of 46

40 9 of 44 4/15/2015 1:06 PM Table Full-Load Current in Amperes, Direct-Current Motors The following values of full-load currents * are for motors running at base speed. Horsepower Armature Voltage Rating * 90 Volts 120 Volts 180 Volts 240 Volts 500 Volts 550 Volts *These are average dc quantities. Table Full-Load Currents in Amperes, Single-Phase Alternating-Current Motors The following values of full-load currents are for motors running at usual speeds and motors with normal torque characteristics. The voltages listed are rated motor voltages. The currents listed shall be permitted for system voltage ranges of 110 to 120 and 220 to 240 volts Horsepower Volts Volts Volts Volts Page 41 of 46

41 40 of 44 4/15/2015 1:06 PM Horsepower 115 Volts 200 Volts 208 Volts Table Full-Load Current, Two-Phase Alternating-Current Motors (4-Wire) 230 Volts The following values of full-load current are for motors running at speeds usual for belted motors and motors with normal torque characteristics. Current in the common conductor of a 2-phase, 3-wire system will be 1.41 times the value given. The voltages listed are rated motor voltages. The currents listed shall be permitted for system voltage ranges of 110 to 120, 220 to 240, 440 to 480, and 550 to volts. Horsepower 115 Volts Induction-Type Squirrel Cage and Wound Rotor (Amperes) 230 Volts 460 Volts 575 Volts 2300 Volts Table Full-Load Current, Three-Phase Alternating-Current Motors The following values of full-load currents are typical for motors running at speeds usual for belted motors and motors with normal torque characteristics. The voltages listed are rated motor voltages. The currents listed shall be permitted for system voltage ranges of 110 to 120, Page 42 of 46