Tom/Barb wrote:
ScottG wrote:
Of course you have an open ground. Your ground isn't supposed to be bonded and none of that matters anyway. A GFCI doesn't trip because of an "open ground".
Somewhere, you have a leakage to ground. Could be a wet outside receptacle, bad fridge heater *even if it works fine) or water heater or even a bad microwave (rare). I would unplug the appliances and see if the fault remains.
If that was his problem, plugging it at home would pop the breaker.
No, it would not because a GFCI fault is not an overload.
OP, another thing that can cause it is a failing converter. I would turn off its breaker and see if it still trips the GFCI.