Shore GFCI trips when plugging in boat
My boat is on the hard right now for a bottom job. The yard provides power in the form of a standard household 15A outlet with GFCI. Whenever I plug my boat into it, either the GFCI trips or my main AC breaker trips. At first I thought it was too much current so I shut everything down except the charger and turned the charger to 2A. No dice. If I turn off literally every circuit then the main breaker and GFCI remain on, but that's not very useful. I never have trouble with marina shore power. Thoughts?
1979 Gulfstar 37 Laissez Faire