Originally Posted by oldhudson
...even with the onboard disconnect off it was still there.
Only when I disconnected the 50amp power cord from the pedestal did it go away.
How can I track the source? 76 volts but low amperage. I probably need to check the amperage next. Suggestions?
Main breakers interrupt hot & neutral but not ground.
Have you checked shore power pedestal and cord (connected to pedestal but disconnected from boat) neutral to ground?
Another way to verify might be to run onboard gennie (if you have one) w/ shore power cord disconnected.
If the 76V is not
present it points to the shore power pedestal or cord.
If 76V is present there is something aboard (prior to the breakers) leaking to ground.
You don't mention if you have an inverter or isolation transformer or not...
Also note: Nigel Caulders "Boatowners Mechanical & Electrical Manual" is a worthwhile reference and walks you through testing grounding circuits w and w/o isolation transformers