electrical/ generator connection


Old 11-18-03, 03:57 AM
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electrical/ generator connection

I want to install a 40 kw generator. If I have an existing 400 amp service, how is the transfer switch connected to the main service.
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Old 11-18-03, 08:46 AM
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A 40 kw generator will only provide with a 166 amps at 240 volts. There will need to be some load shedding involved.
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Old 11-18-03, 02:23 PM
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Is it a single 400A service or parallel 200A?
With 2- 200A services we sometimes will put all the generator loads in one panel and all the non-critical loads in the other, being careful to try and keep the load as balanced as can be. You can then use a less expensive 200A transfer switch.

With a single 400A service you'll need a 400A transfer switch. Depending on the gen-set you get this can be automatic or manual.

Is this a home or commercial. 40kw is a whopper for a home.
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