When plugging in plugs.
For safety reasons
Plug in as many as you can before power is present
Thus you plug the cord into the razor,, then the wall socket
You plug the 50 amp RV into the 50-30 adapter, then the 50-30 into the 30-15, Then to your 12Ga Extension cord,, then to the wall outlet
That way NO arcing happens
If you accidently touch something best left untouched.. Nothing happens (Except on the last plug)
And when plugging into the park.. TURN OFF the circuit breaker before inserting/removing the plug, Leave off if removing, turn on once FULLY inserted.