I checked the current NEC and you will need a minimum of 3 conductors, #8 THHN (#6 THHW is adequate). The underground conduit is 1.5” PVC schedule 40. The ground size is #10. I recommend installing an outdoor unfused disconnect ahead and next to the outlet (because of the distance from the panel breaker, an inexpensive plastic HVAC type will do).
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2017 Ram DRW, Pullrite Auto Slider, 2019 3120RL Monty
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