2011 NEC, then again you probably knew this. 695.3 Power Source(s) for Electric Motor-Driven Fire Pumps. Electric motor-driven fire pumps shall have a reliable source of power.
(A) Individual Sources. Where reliable, and where capable of carrying indefinitely the sum of the locked-rotor current of the fire pump motor(s) and the pressure maintenance pump motor(s) and the full-load current of the associated fire pump accessory equipment when connected to this power supply, the power source for an electric motor driven fire pump shall be one or more of the following. (1) Electric Utility Service Connection. A fire pump shall be permitted to be supplied by a separate service, or from a connection located ahead of and not within the same cabinet, enclosure, or vertical switchboard section as the service disconnecting means. The connection shall be located and arranged so as to minimize the possibility of damage by fire from within the premises and from exposing hazards. A tap ahead of the service disconnecting means shall comply with 230.82(5). The service equipment shall comply with the labeling requirements in 230.2 and the location requirements in 230.72(B). [20:9.2.2(1)] (2) On-Site Power Production Facility. A fire pump shall be permitted to be supplied by an on-site power production facility. The source facility shall be located and protected to minimize the possibility of damage by fire. [20:9.2.2(3)] (3) Dedicated Feeder. A dedicated feeder shall be permitted where it is derived from a service connection as described in 695.3(A)(1). [20:9.2.2(3)] (B) Multiple Sources. If reliable power cannot be obtained from a source described in 695.3(A), power shall be supplied by one of the following: [20:9.3.2] (1) Individual Sources. An approved combination of two or more of the sources from 695.3(A). (2) Individual Source and On-site Standby Generator. An approved combination of one or more of the sources in 695.3(A) and an on-site standby generator complying with 695.3(D). [20:9.3.4] Exception to (B)(1) and (B)(2): An alternate source of power shall not be required where a back-up engine-driven or back-up steam turbine-driven fire pump is installed [20:9.3.3] Also phase converters are out (F) Phase Converters. Phase converters shall not be permitted to be used for fire pump service. [20:9.1.7] Sounds like a Diesel, use the single phase service for the controller, heater, jockey, etc. John Drucker, CET Fire Protection Subcode Official Fire / Building / Electrical Inspector New Jersey -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Todd Williams Sent: Monday, April 8, 2013 9:25 PM To: [email protected] Subject: Re: generator as primary supply Only if you really stretch the definition Todd G Williams, PE Fire Protection Design/Consulting Stonington, CT 860-535-2080 www.fpdc.com On Apr 8, 2013, at 9:13 PM, "John Drucker" <[email protected]> wrote: > Does it qualify as a power production facility John Drucker - Mobile > Email > > ----- Original Message ----- > From: [email protected] > <[email protected]> > To: [email protected] > <[email protected]> > Sent: Mon Apr 08 20:40:33 2013 > Subject: generator as primary supply > > I am looking at a job where the spec calls for an electric VT fire pump with a generator as primary electric supply. (Only single phase in street.) I know it can be done mechanically but I am not aware of any approved system. Is there such an animal? > > Todd G Williams, PE > Fire Protection Design/Consulting > Stonington, CT > www.fpdc.com > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > > > CONFIDENTIAL AND PROPRIETARY: > This email message is intended only for the use of the individual or entity to which it is addressed and may contain information that is privileged and confidential, nor is it, unless specifically stated, intended to be relied upon by any person or persons other than the individual or entity named above and no warranties or representations are made or intended to persons or entities not named above. If the reader is not the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. 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