Mandalay Parr wrote:
Better get an electrical person to help you. Voltage drop is a sign of a poor connection. That could cause a fire.
I agree. Significant voltage drop on 50 amp shore power is a sure sign of a real problem.
As already suggested, unplug from shore power, start the generator and see if the problem is solved/persists. That will tell you if the problem is on the "coach side" of the ATS (Automatic Transfer Switch).
At the very least, look CAREFULLY at the ends of your shore power cord for signs of overheating and "smell" the ATS to see if there is any hot electric smell.
This could be a real safety issue.