Residential fridge upgrade power options

Thanks to all who responded. I think with the Magnum 2012 inverter it does what y'all have described and will pass thru the line voltage of either shore or generator power. Appreciate the advice and assistance. Great resources when we are in need.

As I posted on the other site where you asked, your Magnum inverter has a built in transfer switch.

So, when on either shore power or generator, it is not "inverting"/using battery power to supply the everything downstream of the inverter. It is merely passing through the power it gets and also charging the batteries (it does both).

I have a transfer switch just for the fridge but stopped using it. Each time it switched back and forth from gen to inverter it goes into a defrost cycle. We run the generator for the coffee maker and micro. If unplugged and plugged back in some refrigerators will do a defrost cycle which pulls a lot of amps.

When not using the rig or sitting in a park I plug it into shore power. When on the road or dry camping it stays on inverter.

I think your installer did things correctly.

Some inverters have a transfer switch built into them; yours may be one. In that case, when you're plugged into shore power, the inverter is not actually inverting but only passing through the shore power.

Even if it is running, so long as your converter is capable of supplying sufficient power to both run the fridge and charge the battery, you shouldn't need to worry about the batteries any more than previously when in storage. They aren't really being used; they're just sitting there floating.

Could possibly run an electrical extention cord from A 110 outlet in the garage and just unplug the refer from the inverter outlet and plug it into the extension cord. (Of course reverse the process before you drive off next time). I think thats and easy way to get there.