a. Regarding your earlier request for an AC schematic, I don't have one and it would be very simple. We have 6 active AC breakers, plus a couple of spares. Each breaker feeds a chain of AC receptacles (one feeds the water heater, not yet commissioned). These are all Pass & Seymour stainless steel, hospital grade (yellow plastic) in plastic housings. I didn't use a GFI as they are reputed to trip intermittently due to the marine environment. David Salter, (s/v #050, Opportunity)