We have a faulty circuit breaker in our 5th wheel - a combination 30 amp main breaker and a 20 amp A/C breaker. The 20 amp breaker is the bad one but whole thing must be replaced because it is a single unit. Not luck finding that combination at two 2 RV parts departments. Found one at Lowes that is a 30-30 and one that is a 20-20.
The question is: Since the 20-20 is not big enough for the main breaker, can we increase the A/C breaker to use the 30-30? Would that be a problem or should we search the internet for a 30-20?