It seems like a lot of converter/inverter mix up going on here. The only time I turn my inverter on is when I am not hooked up to shore power or don!t have the generator running. My inverter is only used for the residential refrigator when driving or boon docking with out the generator or shore power. The converter is always on anytime I am hooked up to power, using the generator. The inverter turns battery power into 120 volt for the refer. The converter is used to turn 120 volt power to 12 volt and keep the batteries charged. Anything in the croach that is 12 volt runs off the converter or the batteries. The engine alternator provides the 12 volts while driving if you are not running the generator.