Ground-fault protection of equipment.

[binwork91]

Question: In 480/277V system, if service switch has ground fault protection, does generator 1000A main breaker (480v) require to have ground fault protection?
Generator is not emergency 700 or legally required standby 701.

 

[infinity]

Question: In 480/277V system, if service switch has ground fault protection, does generator 1000A main breaker (480v) require to have ground fault protection?
Generator is not emergency 700 or legally required standby 701.

So the generator conductors are feeder conductors? If yes then the GFPE is required. Look at 215.10.

 

[binwork91]

So the generator conductors are feeder conductors? If yes then the GFPE is required. Look at 215.10.

I thought that when there is ground fault protection on the service switch, the feeder does not need ground fault protection. 240.13 maybe?

 

[infinity]

I thought that when there is ground fault protection on the service switch, the feeder does not need ground fault protection. 240.13 maybe?

Won't the service be disconnected when on generator power?

 

[binwork91]

Won't the service be disconnected when on generator power?

Thank you, that makes sense to me now.