Turn 30 amp RV into 50 amp RV? Can you make a 30 amp RV into a 50 amp RV by using an adaptor and plugging into the 50 amp at the power pedestal? 30 amp RVs (30 amps x 120 volts = 3,600 watts) 50 amp RVs (2 lines x 50 amps x 120 volts = 12,000 watts) You can only use 80% of the total Watts continuously. 30 amps (3,600 x 80% = 2,880 watts) 50 amps (12,000 x 80% = 9,600 watts) Find more information about RV electricity at: https://www.mobilervtechservices.com/post/rv-electricity-made-easy-group-rv-