Anybody have a Xantrex inverter? What is everyone using??

I wanted to get rid of the converter and get an inverter and a better charger just to run the tv and small appliances so I don't have to run the gen if I'm off the grid. My issue now is I bought a used magnum 1000w inverter charger but it only has a 20 amp pass through relay for shore power instead of 30. It has the smart switch but with the low amperage I'm not sure how to route it to make it work. I know I should've got a 30 amp but the price was right.