On Tue, 18 Nov 2014 23:58:02 -0500, "Mr. Luddite"
wrote:

I discovered a while ago that ground fault protectors don't work well
with some inverter/battery chargers that use switching power supplies.
When they turn on the first half cycle fakes the ground fault out
causing it to trip. The first RV we had did this and it took me quite a
while to discover the problem. It worked fine on a circuit with no
ground fault detector but when plugged into a protected circuit it
tripped the ground fault every time.

===

The easiest solution to that is an isolation transformer. I'm going
to get one for the boat next time we go to the Caribbean. It would
also solve the European style 220 volt shore power issue for us.