Keith,
GFCI breakers make certain that outgoing current always matches incoming
current. They do not monitor earth. They monitor phase to phase and phase to
neutral with a bridge circuit. There should never be more than 50 milliamps
of current on the safety circuit and on a boat there must be "0" amperes for
corrosion reasons. On a boat, there can only be one earth reference for all
loads both AC and DC. DC return is not earth, it must also be completely
separate.
Steve

"Keith" wrote in message
...
and ONLY if there is no DC current leakage, or DC grounds wired to the AC
grounds. Of course, this NEVER happens. ;-)

--


Keith
__
Pardon my driving, I'm reloading.
"John R Weiss" wrote in message
news:%D8vc.3368$sI.620@attbi_s52...
"Paul Schilter" paulschilter@comcast,dot,net wrote...

You don't have to install a GFCI in every outlet. Just in the
first
outlet of the circuit, the rest that are downstream will be protected.
Just
have them in every circuit.

ONLY if the GFCI outlet supports chaining, and ONLY if it is the first
outlet in the circuit and ONLY if it (the circuit and the GFCI) is wired
correctly!