If you have not done so, check all the wiring into the surge guard, to ensure it's all tight. Also ensure you take the allen wrench and check that one ground wire, held down with that screw type. If you have not done so, read up on Generator wiring and those issues on this forum. Many folks on here have reported loose wiring in those areas. When I check mine, some were so loose, I could pull out the wires from the connection. This might be where your problem is coming from.
I am going to purchase a electrical checker, and never plug into pedistal power without checking it first.
Monty & Janet - 2007 Alpine APEX 40 MDTS
S/N - 75715 - Retired - Master Certified RV Tech