Lynnmor wrote:
ScottG wrote:
PNW_Steve wrote:
If you use an adapter to accommodate plugging your 30amp shore power into a 50amp circuit you have a shore cord rated for 30amps "protected" by a 50 amp breaker. Not effective protection.....
The 30A main breaker in the RV keeps it from pulling more than 30A through the cord.
So he is protected.
Since he mentioned only the cord, the statement is correct. While it is very unlikely that the 30 amp cord will ever be overloaded, breakers are for unlikely events such as a short circuit or being used improperly such as connecting it to a higher load.
The OP is asking about using an adapter and surge protector.
The OP is also talking about plugging in his 30A RV to a 50A receptacle. This is a totally safe, legal and the adapter (which is 10AWG) is both UL and CSA approved.
There is no danger at all in using the 30A cord that came with his RV to plug into 50A. Here's where I suspect your both making your mistake. It seems like you believe the 50A breaker is there to protect the cord or load.
It isn't. The breaker in your panel is never intended to protect the load. It's there soley to protect the wiring and receptacles in its own circuit and nothing beyond.