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Old 07-20-2016, 05:08 PM   #1
Join Date: Aug 2007
Posts: 88
Generator Backfeed

I keep my 2005 Sea Breeze plugged in during the winter to keep the batteries charge. I also exercise my generator every month. Have been doing this for years with no problems.

My coach is plugged into a 110v circuit in the garage that is GFI protected.

Recently I noticed that when I start the generator with the coach plugged into 110V, the 110v gfi breaker gets thrown. Additionally, I tried running the house AC while driving with the generator on and the AC breaker got thrown.

Is this an indication that the Automatic Transfer Switch (ATS) is bad?

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Old 07-20-2016, 06:34 PM   #2
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Join Date: Jul 2014
Posts: 21,240
First, I would say that you have 2 issues.

The AC throwing a circuit breaker is an overload situation. The AC is drawing more amps then the breaker is designed for. It could be a stalled fan, shorted wire, bad start capacitor or a bad compressor.

A GFCI receptcal is a not for overload protection but a shock prevention device. It looks for an imbalance of the current flow. That imbalance may be voltage traveling thru your body, rather then returning to the outlet. That could be related to the transfer switch.

If you can, check for tightness on all of the transfer switch connections.
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