Hi Kevin,

I found your boat wiring website and would be grateful if you might comment on the following for installation of marine electrical systems in an aluminium hull boat. Its a complicated issue I know!

AC system includes generator, inverter and marine electrical shore power. The AC system is entirely floating, i.e., no negative grounding and is interfaced with shore connections via an isolation transformer.
DC system includes house battery, engine alternator (isolated negative) and engine battery. All are grounded to one common negative pole on the hull. No other equipment is negative grounded.I have been told that it would be better to float the DC system entirely...
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