New construction service


Old 09-22-06, 12:29 PM
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New construction service

I have rebuilt a lakehome and kept the existing 3 car garage which contains a 200 amp panel. The garage is attached. the panel is on the oposite side of the garage from the house. approx. 39 feet. My question is should I run all my electrical from this box to the house or should I install a 100 amp box in the house, tapped off the 200 amp service in the garage?

Thanks in advance for your help
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Old 09-22-06, 12:35 PM
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Do a load calculation on the house and decide what it needs. Then you will have a better idea of what to do.
Old 09-22-06, 12:56 PM
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How big will the house be? What is the average and longest lengths of the runs in addition to the 40ft from house to garage panel?
Old 09-23-06, 06:28 AM
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From purely a cost standpoint, you may want to install a (200A?) sub-panel in the house as near as you can legally (code wise) get to the largest loads in the house. You can feed it with SER aluminum cable and save a lot on (copper) wiring expense. All of your copper homeruns will be a lot shorter.
Every #12 homerun (50'?) will cost around $15-$25 (wire cost), and the HR's for the AC, range, waterheater, clother dryer and any other large load will cost much more. Keep them as short as possible.
Old 09-23-06, 06:49 AM
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How many ckts. In the garage panel now? It may be better to extend them into the house.
Change the existing 200A panel to a 200 A FUSED disconnect.Or Main breaker disco.
Run the SE cable (4 wire) to the relocated existing 200A panel, Treat the panel now as a sub panel, Coz it is now.

Last edited by lectriclee; 09-24-06 at 12:07 PM.
Old 09-24-06, 09:44 AM
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Depending on loading, I'd run a couple 60A subs for the convenience/general/small appliance circuits, and run the large 240V appliance loads directly from the main panel, as well as the garage and outside circuits.

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