My camper has no built in gen option so I added the
Xantrex inline transfer relay when I installed my inverter. Fortunately I installed it in a cabinet directly behind the converter so I ran a separate lead feeding the converter/charger to the shore power connector on the input of the transfer relay. That way the only way it gets power is from shore power.
Only other issue I had was my DC compressor fridge also has an AC input that it switches to automatically when live. Pulling the plug ensured it'll stay on 12v.
I hadn't thought about it until now but I wonder if the Xantrex relay is setup so the inverter powers the relay. If so, since I rarely use shore power I'll have to think about reversing that.
Thanks.
