I opted to install
one of these. The transfer switch is between the inverter output, and my subpanel on the inverter input. It is set up so if I have shore / generator power, the ac is powered off that, if I don't, it switches the AC to the inverter. My subpanel powers the inverter's 2 30 amp inputs, both ac's, the electric water heater, and my 100 amp converter. The converter is for when all I have available is 20 amp service, I can use double conversion and use the microwave, toaster, coffee pot, and the girls can use the hair drier all at the same time - not for long, but other then the hair drier everything is quick, and the batteries recover at 100 amps.
