ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals

Page 1 of 5 1 2 3 4 5 >
Topic Options
Rate This Topic
#101047 - 02/05/07 03:18 PM Table 310.15(B)(6)
Tom Offline
Member
Registered: 01/01/01
Posts: 1044
Loc: Shinnston, WV USA
I'm taking an informal poll here.

Should the table apply to a feeder run from a dwelling to a detached shop?
_________________________
Few things are harder to put up with than the annoyance of a good example.
Top
2017 / 2014 NEC & Related Books and Study Guides
#101048 - 02/05/07 03:28 PM Re: Table 310.15(B)(6)
gfretwell Offline


Member
Registered: 07/20/04
Posts: 9039
Loc: Estero,Fl,usa
No, it is only for the main feeder to the dwelling.
_________________________
Greg Fretwell
Top
#101049 - 02/05/07 03:41 PM Re: Table 310.15(B)(6)
iwire Offline
Moderator
Registered: 01/05/03
Posts: 4391
Loc: North Attleboro, MA USA
The detached shop is not a dwelling unit so that table can not be used.
_________________________
Bob Badger
Construction & Maintenance Electrician
Massachusetts
Top
#101050 - 02/05/07 03:57 PM Re: Table 310.15(B)(6)
Roger Offline
Member
Registered: 05/18/02
Posts: 1716
Loc: N.C.
Another no here.

Roger
Top
#101051 - 02/05/07 05:53 PM Re: Table 310.15(B)(6)
ShockMe77 Offline
Member
Registered: 06/11/05
Posts: 821
Loc: Rahway, New Jersey
No, it is only good for the main feeder and to other panels within the same dwelling. Conductors feeding a detached "shop" must comply with 310.16. So it's ok to run #4 copper feeders to a subpanel on the 2nd floor of a dwelling for 100 amps, but if 100 amps is desired for a detached shop, #2 copper should be run.
Top
#101052 - 02/05/07 06:55 PM Re: Table 310.15(B)(6)
Steve T Offline
Member
Registered: 02/14/01
Posts: 306
Loc: Oak Park, IL, USA
That's kinda dumb ain't it?
Top
#101053 - 02/05/07 06:56 PM Re: Table 310.15(B)(6)
gfretwell Offline


Member
Registered: 07/20/04
Posts: 9039
Loc: Estero,Fl,usa
Shock, a sub panel is not a "main feeder" unless that is the source of all current to a dwelling. For example, if you had a 100a disconnect at ther meter feeding a distribution panel that would be a main feeder. If you come to a main panel with other loads and then feed another sub, that is not a main feeder and you us 310.16.
_________________________
Greg Fretwell
Top
#101054 - 02/05/07 08:35 PM Re: Table 310.15(B)(6)
ShockMe77 Offline
Member
Registered: 06/11/05
Posts: 821
Loc: Rahway, New Jersey
A main feeder, and all other feeders within the same dwelling, shall comply with Table 310.15(B)(6).
Top
#101055 - 02/05/07 08:46 PM Re: Table 310.15(B)(6)
caselec Offline
Member
Registered: 04/14/02
Posts: 558
Loc: San Jose, CA
Quote:
A main feeder, and all other feeders within the same dwelling, shall comply with Table 310.15(B)(6).


Not sure where you are getting this from. 310.15(B)(6) can't be used for subpanels.

310.15(B) (6) 120/240-Volt, 3-Wire, Single-Phase Dwelling Services and Feeders For individual dwelling units of one family, two-family, and multifamily dwellings, conductors, as listed in Table 310.15(B)(6), shall be permitted as 120/240-volt, 3-wire, single-phase service-entrance conductors, service lateral conductors, and feeder conductors that serve as the main power feeder to each dwelling unit and are installed in raceway or cable with or without an equipment grounding conductor. For application of this section, the main power feeder shall be the feeder(s) between the main disconnect and the lighting and appliance branch-circuit panelboards(s). The feeder conductors to a dwelling unit shall not be required to have an allowable ampacity rating greater than their service-entrance conductors. The grounded conductor shall be permitted to be smaller than the ungrounded conductors, provided the requirements of 215.2, 220.61, and 230.42 are met.

Curt
_________________________
Curt Swartz
Top
#101056 - 02/05/07 11:57 PM Re: Table 310.15(B)(6)
stamcon Offline
Member
Registered: 03/24/01
Posts: 329
Loc: So San Francisco CA
Quote:
For application of this section, the main power feeder shall be the feeder(s) between the main disconnect and the lighting and appliance branch-circuit panelboards(s).


Isn't any panel located downstrem of the main disconnect a "subpanel"? Or does the main disconnect have to be an overcurrent device, to have any panel downstream a "subpanel"?

steve
Top
Page 1 of 5 1 2 3 4 5 >

Member Spotlight
Member Since: 11/17/00
Posts: 2232
New in the Gallery:
SE cable question
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box


Who's Online
0 registered (), 45 Guests and 8 Spiders online.
Key: Admin, Global Mod, Mod
 
New in the Gallery:
SE cable question
 
Top Posters (30 Days)
Admin 47
HotLine1 43
gfretwell 19
Ruben Rocha 12
Trumpy 9
 
Newest Members
Freecrowder, clee512, Jdscott2005, FAIZAN, Regitest2

ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals