Generator inlet wiring


Old 07-08-14, 01:04 PM
Thread Starter
Join Date: May 2013
Location: USA
Posts: 7
Generator inlet wiring

I have an existing 50 amp double pole breaker GFCI on 8 gauge wire that used to run to a hot tub. Right now the wire terminates in a box outside behind panel. I am wanting to install a 30 amp inlet box to plug my 4000W generator into for some backup power. The breaker is at the top of the panel and I have an interlock setup already for it. Question is can I leave existing breaker and wire and install a 30 amp inlet and be ok? This would make it easy and leave the ability to upgrade the inlet to 50 amp later if I would need it. Also the generator has its own 30 amp breaker to protect it. Thanks for the help
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Old 07-08-14, 07:16 PM
Justin Smith's Avatar
Join Date: Dec 2010
Location: Cressona, Pa, USA
Posts: 2,546
No. You cannot backfeed a GFCI breaker.

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