Question About Gage

 
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Old 12-12-2009, 03:19 PM   #1
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Question About Gage


I know this has been talked about other threads but have a similar question.

I have been doing some sub/pick up work framing a garage on a one acre lot. The garage is about 300' or so from the house and main electrical box.

The electrician did not start until I was after the job and I have not had time to stop by and ask him.

What size gauge wire or wires would you run from a main electrical box to a garage like this? The purpose was a back shed not to be used all the time.

I am not looking for anything exact just wondering what would be used?

Like water can loose pressure over long distances, does this happen with electricity too.

Any ideas??

Thanks,
Mike

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Old 12-12-2009, 03:50 PM   #2
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Re: Question About Gage


Need more info like the size service you are putting in the garage. Is it an overhead or direct burial, Is there a dis-connect that may be closer, what size panel is in the home, what size is the service feeding the home?
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Old 12-12-2009, 04:08 PM   #3
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Re: Question About Gage


Quote:
Originally Posted by Kellems View Post
I know this has been talked about other threads but have a similar question.

I have been doing some sub/pick up work framing a garage on a one acre lot. The garage is about 300' or so from the house and main electrical box.

The electrician did not start until I was after the job and I have not had time to stop by and ask him.

What size gauge wire or wires would you run from a main electrical box to a garage like this? The purpose was a back shed not to be used all the time.

I am not looking for anything exact just wondering what would be used?...
Whatever size is needed to carry the expected load.

Quote:
Originally Posted by Kellems View Post
...Like water can loose pressure over long distances, does this happen with electricity too.....
Yes. It's called Voltage Drop.

Quote:
Originally Posted by Kellems View Post
....Any ideas??....
Yea. Give your electrician the information he needs and let him worry about it.
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Old 12-12-2009, 04:09 PM   #4
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Re: Question About Gage


Quote:
Originally Posted by Kellems View Post
Like water can loose pressure over long distances, does this happen with electricity too.
Yes, it's called voltage drop. Your electrician should be accounting for that.
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Old 12-12-2009, 05:30 PM   #5
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Re: Question About Gage


I usually run 750 MCM Cu to be safe.
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Old 12-12-2009, 06:17 PM   #6
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Re: Question About Gage


First you do a load calculation, then a voltage drop calculation. The electrician won't have any problem with those calculations.
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Old 12-12-2009, 09:32 PM   #7
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Re: Question About Gage


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