Another consideration is an item that is downstream of your Surge Guard...your power transfer switch. If you carefully check out this area both visually and with a multimeter to ensure you do not have a voltage reading on your neutral wiring, and that the contactor for neutral wiring looks unburnt, that the wiring does not show evidence of excess heating from bad connections, then you and I will both feel better about your coach's condition. Just an area I would suggest checking out...
Ben Cummings
U.S.A. Luxury Coaches, LLC
Clearwater, FL