Our boat has 50A 120/240v shore power and a 70A 120/240 generator when we are not on shore power, with a gen/shore switch that feeds a standard 120/240 AC breaker panel. I would like to wire an inverter setup inline (passthrough) between the selector switch and AC breaker panel. The boat does not have an isolation transformer. I understand that I will be limited to 50A.
One option connected the selector switch to a 50A breaker, then a 230v inverter (tweaked to 240v), then an autotransformer and then to the AC breaker panel.
The second option uses two 120v inverters stacked, no auto transformer, but inline like option one.
Is this sound? And which of the two options is better? I understand with option 2 the loads will not be balanced, but that is ok, I will not need more than one inverters worth of power. Also, what about grounding?
