Ground Faults at Sea, The Fastest Way to Narrow the Culprit

Ground fault issues feel spooky because the symptoms can move. One trip happens at the pedestal, another at the inverter, and the third during damp weather after a long sail. That is exactly why you need a sequence.

Begin with what changed. Water intrusion, a recent wiring job, a charger swap, or a new appliance narrows the list fast. Then separate shore power issues from onboard distribution issues.

Inspect hot spots, look for damp terminations, and pay special attention to any part of the system that was recently disturbed. Most repeat offenders are not mysterious, they are just hidden.

Urgency matters here. Heat, arcing, or repeated unexplained trips are reasons to stop and inspect, not reasons to keep resetting and hope.