Help !! We are dry camping and running off a portable generator. Everything works fine. The minute I turn off the main double 50 amp breakers, everything shuts down. I am talking 120 volt things, as expected, but all the 12 volt also shuts down also. This has never happened before. Any ideas, other than let the generator run 24/7? I have an inverter that I have run a separate cord from just to operate a couple of chargers and that continues to function. I am confused.