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Ground Fault Protection

Ground Fault Protection

Ground Fault Protection

(OP)
Is GFP (ground fault protection) a requirement for 480V distribution panel in NEC world?

We have a utility transformer (12.47kV – 480V), then a 480V distribution panel, then a dry type transformer (480V – 120/208V) and then a 120/208V distribution panel.

I understand that GFP is not required at 120/208V panel. So is the GFP required at the 480V panel?
 

RE: Ground Fault Protection

NEC 215.10:

Quote:

Each feeder disconnect rated 1000 amperes or more and installed on solidly grounded wye electrical systems of more than 150 volts to ground, but not exceeding 600 volts phase-to-phase, shall be provided with ground-fault protection of equipment in accordance with the provisions of 230.95.

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