I have moved my boat from the TrentPort Marina in Trenton to the Port Credit Yacht Club in Port Credit and now have an issue with my shore power.

The TrentPort Marina does not have GFCI breakers which I'm pretty sure is the issue. PCYC does. I have to 125V 50A shore power socket inlets to the boat one that has the house-side of the panel on it. The other side of the panel only has two Air Conditioning units and associated water pumps. Shore power is two 30A. This shouldn't be an issue because I can connect the Air side and the breaker for that shore power circuit does not trip, even with both AC units operating.

The house side, however, trips the breaker immediately. I have tried even without all the breakers off and no dice.

Spent yesterday with the multimeter and found DC bleeding into the AC side of the panel somehow between ground and neutral through the Fore Bilge Pump. With that off, I can finally power up the House side of the panel with the Battery Charger switched off and the salon outlets, but it only held for half hour or so before tripping again.

I looked for major issues with the wiring and can't see anything obviously incorrect.



Boat is a 1988 Carver Santego.