Re: Magnum inverter.

The automatic bond relay makes sense in cases where one might access pedestal power, I doubt that that is your problem but more of a red herring of sorts....I have occasionally gotten false volt readings when using a digital voltmeter, this is why I always have a analog backup...It could be an interruption in the campers returning ground (not the neutral) back to the generator (or pedestal), I'd try checking for ground continuity....

Good Luck,
3 tons