Quote Originally Posted by RupertW View Post
So on shorepower you use 3 phase only for AC? Is the 40amps at 240v correct?
40 amps at 240v single phase is ballpark correct for 60000 btu/hr airco at full load. You’d normally take that as a single phase dock supply. Boats are wired to take 3 phase from the dock at say 28 metres upwards. But below that size many boats with 60k btu/hr a/c will take a single phase supply from genset or dock and then convert to 3phase on board using a VFD, to power the a/c compressor motor.

Not sure if that answers your Q, so just saying.

As others have said, this much a/c can’t feasibly be done without a generator.