Thor Forums

[gmc]

Let's be realistic about the risk...
Talking about plugging a 30A cord protected at the far end by a 30A breaker into a 50A outlet.... To have a problem, there would need to be a failure in the cord, receptacle on RV, or transfer switch that would cause it to draw more than 30A and less than 50A..
Everything else in the RV is protected by the RV's 30A breaker.
The risk should be minimal.

I would think it is quite common practice to plug in devices less than the rated circuit... Do you ever plug a 15A cord into a 20A circuit at home?
This would have less protection than what we are talking about here since there is no protection downstream of the 20A breaker.

NEC even allows multiple 15A recepticles to be on a 20A circuit... (The hard wiring must be rated for 20A, and if a SINGLE recepticles then it must be 20A. The 'pass thru' on 15A outlets is rated at 20A.). It's left to the user not to attempt to draw 20A through a single 15A recepticle.

You can decide for yourself what the risk is. Personally I wouldn't hesitate to do so.