Quote:
Originally Posted by ccso2213
I'm no expert by any means. I believe when you use a 30 amp adapter on 50 amp service, the two legs are combined. This should give you ample voltage to run. In other words, one leg picks up the slack if the other is low. I may be wrong, but I'm sure someone with a lot more experience than me will chime in.
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This is incorrect.
A 50 amp service is actually 2 - 120V 50A circuits. When you use a 30A adapter to connect your 50A RV you are connecting both of your RV circuits to one line. The 30A receptacle is connected to
one of the two legs in the pedestal. You will be limited to 30A.
The condition you describe sounds like a poor connection on one of the 50A legs.
Typically if you have different voltages on each leg there is a neutral problem. In that case one leg goes low and the other goes high. But this is NOT the problem in your case.
ie: Normal = 120V/120V Bad neutral would be like 90V/150V.