I just did the exact thing that DSDP Don has described. I found the circuit that I wanted to power up ( 6 plugs plus fridge) and connected just as described. My Xantrex 1800 pro has a built in transfer switch so when dry camping I just switch my fridge to lP and selected plugs are hot (including tv/stereo). If I plug into a pedestal the 110v passes through my inverter and powers all the items on the circuit and of course I put my fridge back to auto. Remote on/off for inverter is also handy. Inverters with this feature cost more but worth it to avoid having to switch breakers etc.