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

Topic Options
Rate This Topic
#42769 - 09/25/04 03:36 PM size of wire?
jayson Offline
Member
Registered: 05/12/04
Posts: 49
Loc: russellspringsky
what size of wire is service wire is needed for a 200 amp panel copper size? aluminum size?
Top
Work Gear for Electricians and the Trades
#42770 - 09/25/04 03:39 PM Re: size of wire?
iwire Offline
Moderator
Registered: 01/05/03
Posts: 4391
Loc: North Attleboro, MA USA
The smallest permitted would be 4/0 AL for a dwelling service
_________________________
Bob Badger
Construction & Maintenance Electrician
Massachusetts
Top
#42771 - 09/25/04 04:49 PM Re: size of wire?
Active 1 Offline
Member
Registered: 02/22/03
Posts: 687
Loc: Grayslake IL, USA
We use 3/0 copper for all 3. Lots of locals want that. Someone elce might know the code but I think NEC lets you go one smaller?
Top
#42772 - 09/25/04 04:51 PM Re: size of wire?
Joey D Offline
Member
Registered: 10/10/03
Posts: 259
Loc: Arlington MA U.S.
2/0 copper
4/0 aluminum
Top
#42773 - 09/25/04 04:54 PM Re: size of wire?
iwire Offline
Moderator
Registered: 01/05/03
Posts: 4391
Loc: North Attleboro, MA USA
If we are talking dwelling unit services the NEC allows the use of Table 310.15(B)(6).

200 amp service 2/0 CU or 4/0 AL

100 amp service 4 CU or 2 AL

This does not apply to commercial services.

[This message has been edited by iwire (edited 09-25-2004).]
_________________________
Bob Badger
Construction & Maintenance Electrician
Massachusetts
Top
#42774 - 09/26/04 08:07 AM Re: size of wire?
jayson Offline
Member
Registered: 05/12/04
Posts: 49
Loc: russellspringsky
thanks guys
Top

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 (), 40 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
Scotto, Freecrowder, clee512, Jdscott2005, FAIZAN

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