If it is the main 12 Vdc breaker that is tripping, do you have an inverter that may be pulling too much current in the transfer off the generator? Loose contacts in the generator/inverter transfer switch causing inverter to pull more load.
If it is the main 120 Vac breaker, the DC battery kill switch will have nothing to do with it. Does your coach have a shore line to generator transfer switch that may have loose contacts or be drawing too much current in the transfer? Invertor delivering too much current?
