Inverter hookup

Almot wrote:
Not sure there was a transfer switch. He said that used a shore power cord - with all the mental work that comes with this method, i.e. remembering to disconnect the loads. Doable.

I think the inverter plugged into the shore power receptable is besides the point. He has a "built in" genny and shore power. There must be a transfer switch in there somewhere or he would have already blown something up when on shore power and starting the genny. The only other safe possibility I can think of is that he plugs the AC output of the genny in to the shore power output to use the genny, but that's excluded here because that wouldn't have been possible in the scenario above (since the inverter was plugged in).

There is, of course, always the possibility that the shore power and the genny are both wired into the AC system without a switch, and nothing has "gone boom" yet only because they've never been on at once, but in that case the failure is having a system configured like that, and nothing particularly to do with inverters (it could as well have been shore power in the scenario mentioned).