I wanted to acknowledge to Chuck V that technically your right about the total watts across a double pole breaker, ie 50 amp X's 240 = 12000. I was concentrating on trying to help identify how the trailer and circuit box were wired. Ie 240 or 120 If wired with 240 then there should be a place for a double breaker and split into 2 different 120 circuits. (could also be a 240 circuit also, based on the appliance discussion, but we are talking a FEMA trailer here, not luxury coaches) If originally wired for 120 then a single breaker of 30 amp and a single 120 circuit to feed all the sub circuits. There is a working assumption that a 50 amp double pole breaker is running less than 30 amps in the 120 line or one could not use 10 gauge wire out of the breaker, 50 amps requires the use of 6 gauge wire ie the 60% bigger wire and a hell of a lot stiffer to work with
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