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 Service Disconnect
#200697
04/14/11 10:54 PM
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Joined: Jul 2002
Posts: 241
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A Service Main disconnect could be outside the building or in the Bldg. right?
If the main is outside (near a transformer)then the first panel it feeds in the Bldg. would be a sub panel?
SJT
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 Re: Service Disconnect
[Re: SJT]
#200700
04/15/11 01:09 AM
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Joined: Jul 2004
Posts: 9,571
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Technically the service disconnect just has to be on the property but your AHJ may still want a disconnect on/in the building.
Yes that will become a feeder and you need to run the ECG along with a ground. As long as that is the feeder for the whole building, you can use 210.15(B)(6) in a dwelling. (Not commercial)
Last edited by gfretwell; 04/15/11 03:04 AM. Reason: Make the correction Niko pointed out
Greg Fretwell
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Re: Service Disconnect
[Re: SJT]
#200701
04/15/11 02:36 AM
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Joined: Aug 2006
Posts: 356
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Greg meant, 310.15(B)(6) for 2008 and 310.15(B)(7) for 2011
Be kind to your neighbor, he knows where you live
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Re: Service Disconnect
[Re: SJT]
#200703
04/15/11 03:06 AM
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Joined: Jul 2004
Posts: 9,571
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Thanks. I guess I should turn up the light when I type I am not on the 2011, in protest of the CD thing 
Greg Fretwell
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Re: Service Disconnect
[Re: SJT]
#200714
04/15/11 11:00 PM
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Joined: Apr 2002
Posts: 7,234
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Be cautious on the location 'within the building'. Unprotected, unfused, conductors within a building, the distance allowed is not specific in the NEC. For the most part, it's left up to the local AHJ. I hear 12", 5', 3'4", but there is NO distance within the book & never was.
A main inside is accepted 'nearest to the point of entry', unless we use the 2" of concrete/brick exception. It all boils down to the AHJ's 'nearest' definition
John
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