Automatic Transfer Switch Wiring

Old 05-07-15, 01:31 PM
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Automatic Transfer Switch Wiring

We are having a house built. I have a 10,000W generator that I will be installing along with an automatic transfer switch. Our previous house I installed a manual transfer switch for a 5500W generator, so I am reasonably familiar with how they are wired That transfer switch I separately extended each circuit I wanted into the transfer switch. I am wondering if I were to have the builder put the critical circuits in a sub that sits next to the main panel, could I then just extend the feed for the sub out to the transfer switch, instead of each individual circuit? It would make the sub a lot neater, since I don't have nearly as many wires in it, and it would mean fewer cables running through the conduit. Of course it would keep the main panel a lot neater as well.
Old 05-07-15, 03:07 PM
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It would be better to install a service rated transfer switch and then transfer the entire house to the generator. Then you can selectively choose what you want powered.

A service rated manual transfer switch would have the main breaker for the house in it. It could be installed next to the main panel.
Old 05-07-15, 03:15 PM
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What PJ is suggesting is a good idea but the big disadvantage is that if you are away from home when the transfer occurs you may overload the generator too many things tried to come out all at once which they most likely will when the generator starts. What you are suggesting would work fine, there's definitely nothing wrong with it as far as code is concerned. As you said it's much neater than the way your other one was done.

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