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I believe I have a sub panel because there is a breaker at the meter to shut off power. There is also a separate neutral bar from the ground bar in my breaker box.

Assuming I have that correct, onto my question.

In the sub panel, I have about 20 circuits. I was hoping in theory, if I wanted to, I could take 2 of the reliance pro Tran transfer switches (the 10 circuit models), mount two inlet boxes, and attach two separate generators to them. Half the homes circuits on one switch, half on another switch.

Is this possible? Not sure how much of my ignorance will show here, but when I see the transfer switch wiring diagrams, looks like for a sub panel, you send the white wire to the neutral bar, the green wire to the ground bar, then the red wire to each circuit you want to power, and the black wire you wire nut to the black wire you removed from the breaker. So when I see this diagram, two transfer switches on all separate breakers, with two separate inlet boxes for two separate generators, seem completely independent of each other?

  • Why are you wanting to use two of the hokey select circuit transfer switches? You can do this with one transfer panel for probably the same price or more cheaply, and get other benefits as well (switched neutral for full compatibility with a typical portable generator without having to fiddle with the generator's neutral strap, single hand movement operation for all circuits, full compatibility with GFCI and AFCI breakers, and so on) – ThreePhaseEel Jul 13 at 4:06
  • @ThreePhaseEel no real particular reason. If anything it was just because I have two fairly good sized generators laying around. Seemed easy enough to understand. I’ll have to lookup what you sent. Sounds like it makes more sense anyway. Though, even that being said, does that make the above scenario at all possible? – MZawg Jul 13 at 4:10
  • I guess the bigger question is "what loads are you seeking to back up, and how big are your generators, really?" Also, what make/model is your inside panel? – ThreePhaseEel Jul 13 at 4:16
  • One is a 8k running watt and another is a 6.5k running watt. So between all those circuits it’ll really run the whole house. The small central AC, lights, fridge, etc. most of the cooking and heating appliances are natural gas. – MZawg Jul 13 at 4:18
  • I really haven’t done the math on any of it. I just looked up the largest model made by a company that had decent reviews, then quickly created a hypothetical scenario. In a sub panel with 20 individual breakers, could two transfer switches with independent power sources be utilized to energize all 20 circuits. Aside from that, nothing else was really done. Again, really hypothetical scenario. – MZawg Jul 13 at 4:22

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