Fire Pump Feeders from standby generator

[mshields]

When distributing power in a hospital from a standby generator that serves Life Safety, Critical and Standby loads, I keep the Emergency breakers in one vertical section (so Life Safety and Critical) and I put the standby loads in a second barriered switchboard section. (if a smaller application I come off a wire way with separate devices). The point is per 700.10 these need to be separated. We cannot, as was once common, use a distribution panelboard for these breakers. Where I have a fire pump, that cannot even be in the same switchboard. And so for that I have breaker in it's own section. I believe this is correct as I've been doing it for years. But I'm looking for the requirement in the NEC that requires this added level of separation that is required for Fire Pumps and I'm having a hard time finding it.

Can anyone help?

 

[infinity]

From the NYC amendments 12" of separation is required in 695.4(B)(3) for the service but not for the generator. I'm not sure that you'll find a similar requirement in the NEC.

695.4(B)(3) Disconnecting Means. The disconnecting means shall comply with the following:
(1) Be identified as suitable for use as service equipment.
(2) Be lockable in the closed position. Locking provisions shall remain in place with or without
an installed lock.
(3) Not located within equipment that feeds loads other than the fire pump.
(4) Be located as remote as practicable from other service disconnecting means with a minimum
separation of 305mm (12 in.).
Exception: (1), (3), and (4) shall not apply to fire pumps and limited service fire pumps connected to
emergency generators.

 

[Gregg Harris]

When distributing power in a hospital from a standby generator that serves Life Safety, Critical and Standby loads, I keep the Emergency breakers in one vertical section (so Life Safety and Critical) and I put the standby loads in a second barriered switchboard section. (if a smaller application I come off a wire way with separate devices). The point is per 700.10 these need to be separated. We cannot, as was once common, use a distribution panelboard for these breakers. Where I have a fire pump, that cannot even be in the same switchboard. And so for that I have breaker in it's own section. I believe this is correct as I've been doing it for years. But I'm looking for the requirement in the NEC that requires this added level of separation that is required for Fire Pumps and I'm having a hard time finding it.

Can anyone help?

Is this it?

(2) Feeders. Fire pump supply conductors on the load side of the final disconnecting means and overcurrent device(s) permitted by 695.4(B), or conductors that connect directly to an on-site standby generator, shall comply with all of the following: Changed From 2008

?

695.6(A)(2): Reorganized existing requirements for improved usability.


(a)

Independent Routing. The conductors shall be kept entirely independent of all other wiring.

695.6