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#200697 04/14/11 10:54 PM
Joined: Jul 2002
Posts: 241
S
SJT Offline OP
Member
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

2017 / 2014 NEC & Related Books and Study Guides
SJT #200700 04/15/11 01:09 AM
Joined: Jul 2004
Posts: 9,672
Likes: 7
G
Member
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
SJT #200701 04/15/11 02:36 AM
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

SJT #200703 04/15/11 03:06 AM
Joined: Jul 2004
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G
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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 wink


Greg Fretwell
SJT #200714 04/15/11 11:00 PM
Joined: Apr 2002
Posts: 7,283
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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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