Plugging 30A 5th wheel into 50A service
Will I have any problems if I plug my 30A fiver into 50A service at a RV park. I will not be drawing any more than 30A, but the park says I should pay $50 deposit to rent a "box" from them.
Forum Discussion
Hi Coach-man;
You don't get a single Volts reading from a 50A receptacle. There are two 120 Volt circuits, one at the 9 O'clock and the Other at 3 O'clock. You measure each separately to Neutral(6 O'clock).
It is likely that one of the 50A legs was 90V.
Now, back to your 50A -> 30A pigtail question. I use one whenever I can. I also use a 30A -> 20A.
However,it is wrong to do so by the book. The long answer, which I already explained but you have not grasped yet, is that circuit breakers protect downstream wiring. The 30A cable going into your RV is upstream from the 30A breaker. Technically, that cable is unprotected by the 50A breaker.
HTH;
John
You don't get a single Volts reading from a 50A receptacle. There are two 120 Volt circuits, one at the 9 O'clock and the Other at 3 O'clock. You measure each separately to Neutral(6 O'clock).
It is likely that one of the 50A legs was 90V.
Now, back to your 50A -> 30A pigtail question. I use one whenever I can. I also use a 30A -> 20A.
However,it is wrong to do so by the book. The long answer, which I already explained but you have not grasped yet, is that circuit breakers protect downstream wiring. The 30A cable going into your RV is upstream from the 30A breaker. Technically, that cable is unprotected by the 50A breaker.
HTH;
John
