Old Crow
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XJINTX said:... keep the info coming...
The recent 'School Me On Inverters' thread is a good read if you've not had a chance to see it yet.
Also- On your GFI issue, I'd also want to test the shorepower outlet, the extension cord and the outlets in the camper with a tester like this one from Home Depot (there are several brands of them, just be sure to get one with the GFCI test button for those times you want to test GFCI functionality independent of the TEST button on the receptacle). (I keep one on my extension cord to remind me to test shorepower before plugging in.)