[rohrmann]

The breaker that feeds the hydraulic pump with power also feeds power to the main panel inside through the battery disconnect switch in the convenience center and also carries power back to the batteries from the converter. Why this works with only one breaker is because the hydraulic pump rarely is working at the same time you have 12 volt loads inside the rig. It would be wise if you are replacing the breaker with an 80 amp breaker and you wanted it separate from a second breaker to the inside panel to replace the old 50 amp breaker with a new one at least 50 amps. You can use an 80 amp breaker on both, but since I replaced our breaker over six years ago, it has never tripped, so I don't see a need to have an additional breaker.