I ran a cord from the outside plug on the RV. I actually placed 2 separate C-3 Cold Weather Thermo Cubes to manage 3 infrared bulbs in 2 separate bays, 1 by water pump, 1 on shower side, and 1 on sewage side. Could run to external pole as well. But, I was thinking it would be good to be able to use RV generator if the power went out, etc. I've learned to be prepared for system failures. I have a heat buddy ( gas ), ceramic heaters, just in case the furnace goes on the blink.... If I put receptacles in bays, I could just plug infrared bulbs in with Thermo cubes and be done with it. The temp in North Georgia gets in the low teens often. Love RVing in North GA in fall and winter.
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