I don't mean to spook anyone but actual fire is not the only thing that should be an issue.
The plethora of plastic in an RV lends itself to toxic smoldering that can kill even though there is no actual flame.
And through a confluence of error it is possible to create a short circuit in the shore power line that passes up the cord, into the rig and exits via the green ground circuit.
With absolutely no safety current limit.
Quicksilver has a marine 30-amp breaker on the neutral but this absolutely cannot be done with a 50-amp 240 volt system.