westend wrote:
It sounds like you have lost one leg of the 50 amp service. Inspect shore cable, circuit breaker, and neutral bus. The most likely failure is your adapter followed by the 50A male plug, then 50A female plug if so equipped and then the ATS. Could be the 50A breaker.
You might try a vise grip pliers on the stripped fastener. By pulling and turning at the same time, it may loosen. Alternatively, cut/grind the head off. Three screws will hold the cover on when you are done replacing the circuit breaker or tightening wires. Also a screw extractor might do the job.
But get the cover off to check and mark all CBs on L1 or L2.
