2000 310 Sundancer. The A/C will kick the 20 amp breaker numerous times before compressor will actually start. Fan will always come on but kicks breaker when compressor tries to start. Had the unit out and serviced. while unit was out connected to 110v with water supplied and it starts normally. But in the boat, when the compressor tries to start it acts like its not getting enough power. Replaced the capacitor and added a start capacitor but same result. Also has a new water pump installed. I'm going to replace breaker but the way it sounds when compressor is trying to start is that it just isn't getting enough power. Tried a different shore power chord but same result. Was previously a salt water boat but dry stored and really hardly used. I'm thinking a corroded or bad ground. See several in engine compartment. Got to get my owner's supplement manual since it has wiring diagrams in it. curious what other's think the issue might be and where the ground might actually be located. I guess running a direct ground to breaker to see might tell me?