[scrubjaysnest]

I didn't like having both the converter and the refrig on the same breaker so added a new breaker just for the converter. This also gives me a means to not use the converter when connected to shore power if desired.

Like Bill said with both the converter and refrig fed from the same breaker look for something common. With the refrig off measure the power at the breaker should be around 120vac. Next measure the power after turning on the refrig should be around 120vac. Use care when doing this. The old electricians rule is keep one hand in your pocket when measuring. Difficult I know but it does prevent a current path across the chest which is the killer.