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My old house had a 19k Generac. The main panel was 200 amp and the automatic transfer switch was 100 amp with a load shedding switch on the AC. The transfer switch was sized based on the actual electrical load in the house. The circuit to our detached garage was bypassed. The one time we used it the AC ran the whole time the generator was running.
Our current set up is a 13k Generac 60 amp automatic transfer switch with a 16 slot breaker panel. Main panel is 200 amp. All critical circuits are fed off the panel on the transfer switch. That’s basically all fridges, both furnaces, the fan in the water heater, and lighting. When the power goes out we do without AC and power to the out buildings and a couple of lighting circuits.
I didn’t design either system. In both cases we had the Generac dealer look at our needs and make recommendations.
Just letting you know you don’t HAVE to have a 200 amp TS in a 200 amp house.
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Last edited by wdfifteen; 09-08-2021 at 05:37 AM..
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