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t-smith's avatar
t-smith
Explorer
May 04, 2016

Shore GFI tripping when Inverter circuit is on

I've had my TT unplugged for about a year. Last week, I plugged it into a 20amp GFI circuit. All breakers on in TT. Turned on AC, furnace, etc - everything was good. Had it plugged in a week like ...
GordonThree's avatar
GordonThree
Explorer
May 04, 2016
Typically what upsets a GFI in use with an inverter is the neutral-earth isolation relay... if this is a whole-house type inverter with built in transfer switch.

My Magnum has two or maybe three relays in it, one for hot, one for neutral and one for neutral-earth isolation. If they don't all switch exactly at the same time, the GFI might think there's an imbalance and trip.

As least, that's my diagnosis of what's going on.

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