Fire Pump Service Ground

[phall74]

When Grounding a Fire Pump Service do you have to Use the Amperage size of the Pump or the Wire Size? Since the Amperage is always higher than the actual wire size.

 

[Pierre C Belarge]

I see no relief in Article 695 in regards to sizing of the EGC. 250.122(B) is the section to reference.



*Chapters 1-4 generally apply, Chapters 5, 6, 7 may modify or supplement Chapters 1-4.

In the case of Article 695, I do not see any modification.
Also see 250.122(A) "...but in no case shall they be required to be larger than the circuit conductors supplying the equipment."

 

[RUWired]

Pierre, on the line side of the fire pump controller, the grounded service conductor is sized per 250.24(C) and on the load side of the controller,(feeder conductors) table 250.122 and 250.122(B) if required.Hant it no or what.

Rick

 

[benaround]

And don't forget the GES.