Fire Pump grounding

[faresos]

I have a situation where the utility transformer will be powering both the building and the fire pump. The tapping location would be at the transformer. As we all know, equipment grounding conductor are not pulled with the feeders to the building, only phase and neutral conductor. Now, for the fire pump, are we to pull phase conductors and neutral to the pump also? Where the neutral does terminates? Do we treat the neutral as an equipment grounding conductor and bond it to the case since there is no EGC? In the past, I always ran neutral and phase conductors to the pump but never gave it a thought how is actually wired. Any thoughts???Thanks,

 

[DARUSA]

I have a situation where the utility transformer will be powering both the building and the fire pump. The tapping location would be at the transformer. As we all know, equipment grounding conductor are not pulled with the feeders to the building, only phase and neutral conductor. Now, for the fire pump, are we to pull phase conductors and neutral to the pump also? Where the neutral does terminates? Do we treat the neutral as an equipment grounding conductor and bond it to the case since there is no EGC? In the past, I always ran neutral and phase conductors to the pump but never gave it a thought how is actually wired. Any thoughts???Thanks,

You will need to brink your neutral to the first Disconnect switch because it will be a service DS and neutral is required for it. Now from the fire pump DS you do not have to run a neutral to the fire pump motor control at least that the motor control require a neutral for a 120 volt connections but most of the time it have a transformer inside to do this task.
You will have to have a EG that can be any of the type listed in 250.118 but remember that if you run a cable type it will be based on the table 250.122. If you are using conduit I will suggest to use it as EGC. I hope this help.