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Old 06-24-2016, 08:37 PM   #1
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400Amp panel in new construction


Hi,

I'm building a shop/barn. I will live in it for 1 year then I plan on building a house.

I asked the electric company for 400 amps. Trench has been dug and the electric company is waiting until the barn is built (they said at least the wall where the meter will be located) to install the meter.

I have spent way more money that I thought I would and I want to install the main service myself. I have some experience wiring a house but I've never done a main panel. And I can't seem to find any good informative videos on youtube.

Here is the layout. Pole is on the right, transformer next to the shop, then the shop and house (small circle is the meter).



I'd love to know what I'll need. Will I have a 400amp main panel inside the shop and feed the house (eventually) from the main panel? Or will I have something like this?

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Old 06-24-2016, 09:35 PM   #2
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Re: 400Amp panel in new construction


Something like the image is typical in a residential setting. A 320/400A service would consist of two 200A panels.
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Old 06-24-2016, 10:03 PM   #3
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Re: 400Amp panel in new construction


I'd love you to be more specific, please. Will the electric company supply the enclosure for the meter or just the meter? I believe they will install the meter because they gave instructions on how the conduit should be below the location where the meter will be.

Would something like this work?



400amp outdoor main breaker
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Old 06-24-2016, 10:11 PM   #4
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Re: 400Amp panel in new construction


I think this might be better and then feed the panel inside of the shop?

This
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Old 06-25-2016, 06:50 AM   #5
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Re: 400Amp panel in new construction


Quote:
Originally Posted by Richard Pryor View Post
I think this might be better and then feed the panel inside of the shop?

This
That is something more typical and easier to use than a true 400A panel.

Without knowing your area it is impossible to say. There still are some places where the POCO provides the meter enclosure. If you are even considering doing this work you REALLY need to contact them and get the "book" of their requirements and rules. You CANNOT simply go out and buy something for the meter enclosure that you think will work, it needs to be approved by your POCO.
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Old 06-25-2016, 11:18 AM   #6
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Re: 400Amp panel in new construction


Follow Petey's advice and get the power company involved before you waste time and materials.
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Answers based on the National Electrical Code. Local amendments may apply. Check with your local building officials.
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