Bob Landry wrote:
I installed a Marinco 20A inlet and ran Romex to a small Blue Sea breaker panel that feeds two outlets that I use to run space heaters or fans as needed.
This is an excellent way to tackle this. It's simple, low cost and gets the job done. I did it to our last TT. All you need to do is find a space to mount the inlet that has interior access like a dinette seat, back of kitchen cabinet, etc.
The thing with these is that the CG pedestal receptacle is 15/20 amp T-slot fed by a 20 amp breaker. I doubt you will ever need 20 amps for an appliance. You can't run a 15 amp extension cord to the pedestal because it won't be protected. To install a 15 amp inlet and receptacle, you will need to install a 15 amp breaker somewhere. Inside your unit would be best, but there's no reason why you couldn't mount it in an appropriate electrical box or use a circuit breaker enclosure as pictured above and make a stand and have it sitting on the ground under your TT. Even at the pedestal would work if it's rainproof. Putting the breaker at the pedestal would at least allow you to run 15 amp romex inside and extension cord to the pedestal.
AFIK, the NEC allows 15/20 T-slot receptacles in certain locations in a house. But in an RV I think this could potentially cause a fire and I don't think it would make a good general purpose receptacle. JMHO...
The 15/20 amp breakers in a pedestal are typically GFCI type. You wouldn't want two GFCIs in series. If the CG recept. isn't GFCI, that's probably no problem for most things you'd want to plug in anyway like heater.