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Originally Posted by somewhereinusa
Just a few observations and my opinion. Unless you are going to have a huge generator you won't get two 50A legs. A 3000-3500 watt inverter type with one 30A leg should power what you have listed here.
I'm going to get jumped on for this. Unless you are going to run something like a Tesla lithium I wouldn't do all of that 24-12 volt conversion stuff. Just run it on 12V it takes larger wires to be done properly but, you have a LOT of converting going on there. Every time you convert electricity to something else you loose a bit. Why have 12 and 24 volt lights? RV water pumps aren't generally available in 24V.
If you buy a quality inverter/charger the automatic transfer switch is built in. The latest "hybrid" ones will, if your shore power isn't good enough, draw power from your battery bank to make up the difference. When the load decreases they will then resume battery charging.
Not sure what the "high/low voltage inverter" you have listed are.
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With a 24v battery bank the only dc-dc converter that I will need is for my heater. All other DC loads are 24v.
There is a definite advantage to running a 24v or 48v house battery on larger systems.