Originally Posted by Panacea2183
Question is if the selector switch is turned to OFF how can any power flow into the boat to trip the GFI?
if the N and G wires were swapped in the dock wiring
. nothing normally would be noticed. (unless you clamped the green wire in the panel) but then current
can flow from the N of the dock
panel into the boat ground and into the water
. even with his double pole main breaker off.
if everything is wired correctly. when his double pole breaker is off. no current
can flow on either the N or H and you can't blow a GFI if there is no current. there is obvisouly an issue. with a clamp meter, volt meter, and knowledge it wouldn't take long to find.