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#95450 - 09/13/05 10:34 PM 200 amp service
watersparkfalls Offline

Registered: 03/08/05
Posts: 210
Loc: Washington...Not DC
a garage/workshop is existing on some land, the new owner wants to build a 2800 sq ft house. the existing garage/workshop is fed from a 200 amp mobile pack which is approx. 225' away. the new house will be within 100' of existing sub panel and 200+ feet away from existing mobile pack.

is it legal to feed house from garage sub?
always heard that you cant feed a sub from a sub to detached building,but dont know what nec ref #.

and if i do have to go back to mobile pack, can i change single lugs to a double barrel set to feed the new house?

any help will and is appreciated.


2014 / 2011 NEC & Related Books and Study Guides
#95451 - 09/14/05 02:04 AM Re: 200 amp service
jw electric Offline

Registered: 09/08/05
Posts: 108
Loc: Asheboro, NC
I can not find the term “subpanel” in the NEC. If I can not find it then I can not find a requirement forbidding the use of one to feed one.

#95452 - 09/14/05 07:02 AM Re: 200 amp service
Larry Fine Offline

Registered: 02/18/05
Posts: 684
Loc: Richmond, VA
You can feed a sub-panel from a sub-panel.
Larry Fine
Fine Electric Co.

#95453 - 09/17/05 05:49 PM Re: 200 amp service
e57 Offline

Registered: 05/27/03
Posts: 2837
Loc: S.F.,CA USA
I too have not heard of this sub to sub rule.... I do it all the time.

But what you're talking about is a service or panel at a detatched structure (existing mobile pack), sub at a detatched building. (new house) Among others, see Art. 225. There are too many codes to list for the application your going into without knowing much more.
Mark Heller
"Well - I oughta....." -Jackie Gleason


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