Originally Posted by MiddleClassHero
Thanks for the quick response. I’m not sure what gage this extentenion chord is. It says 16/3? Is that ok to use?
That means it's a 16 gauge wire. 50 amp service requires much heavier cable, 10 gauge or more (lower numbers are thicker cable). Not only that, but your house wiring requires 12 gauge for 20-amp service, or 14-gauge for 15 amp service. An 16 gauge extension cord (chords are for music, not electricity) plugged into a home outlet in order to supply your RV will be overloaded and could easily overheat, potentially causing a fire, without blowing the circuit breakers that protect the circuit.
For safety's sake you should use an extension cord with at least 12 gauge wire. 16 gauge creates a very unsafe situation.