Another hot water heater question

Weldon wrote:
Recently my A/C would not come on, my water pump would not come on, the hot water switch for gas would not work and the switch used to open and close the slide outs would not work. After checking the problem, I replaced a 15 amp fuse and it corrected all of the problems.

thermostat needs 12VDC, hot water heater with DSI needs 12V DC, fridge needs 12VDC even when running on 120VAC for the element,

usually fused by 10A or 15A fuse in the fusebox.

Often the slides are on a 30A 12V self resetting circuit breaker. I replace those with a 30A manual reset circuit breaker so they won't cycle on and off in the case of a real fault.