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#200697 - 04/14/11 08:54 PM Service Disconnect
SJT Offline

Registered: 07/24/02
Posts: 242
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?

2014 / 2011 NEC & Related Books and Study Guides
#200700 - 04/14/11 11:09 PM Re: Service Disconnect [Re: SJT]
gfretwell Offline


Registered: 07/20/04
Posts: 9023
Loc: Estero,Fl,usa
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)

Edited by gfretwell (04/15/11 01:04 AM)
Edit Reason: Make the correction Niko pointed out
Greg Fretwell

#200701 - 04/15/11 12:36 AM Re: Service Disconnect [Re: SJT]
Niko Offline

Registered: 08/17/06
Posts: 358
Loc: Campbell, CA
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

#200703 - 04/15/11 01:06 AM Re: Service Disconnect [Re: SJT]
gfretwell Offline


Registered: 07/20/04
Posts: 9023
Loc: Estero,Fl,usa
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

#200714 - 04/15/11 09:00 PM Re: Service Disconnect [Re: SJT]
HotLine1 Offline


Registered: 04/03/02
Posts: 6791
Loc: Brick, NJ USA
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


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