ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat
Recent Posts
Al Hildenbrand - Minneapolis - obituary
by Bill Addiss - 02/03/23 07:38 PM
Violation?
by renosteinke - 01/27/23 09:52 PM
Does NEC 551.71 (F) apply to dwellings?
by BigB - 01/20/23 10:46 AM
Power submeter connections
by HotLine1 - 01/19/23 09:09 AM
New in the Gallery:
Burger King crown sillyness
Burger King crown sillyness
by wa2ise, December 11
240/208 to a house
240/208 to a house
by wa2ise, October 9
Who's Online Now
0 members (), 35 guests, and 12 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
#42769 09/25/04 05:36 PM
Joined: May 2004
Posts: 49
J
jayson Offline OP
Member
what size of wire is service wire is needed for a 200 amp panel copper size? aluminum size?

#42770 09/25/04 05:39 PM
Joined: Jan 2003
Posts: 4,391
I
Moderator
The smallest permitted would be 4/0 AL for a dwelling service


Bob Badger
Construction & Maintenance Electrician
Massachusetts
#42771 09/25/04 06:49 PM
Joined: Feb 2003
Posts: 687
A
Member
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?

#42772 09/25/04 06:51 PM
Joined: Oct 2003
Posts: 259
J
Member
2/0 copper
4/0 aluminum

#42773 09/25/04 06:54 PM
Joined: Jan 2003
Posts: 4,391
I
Moderator
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
#42774 09/26/04 10:07 AM
Joined: May 2004
Posts: 49
J
jayson Offline OP
Member
thanks guys


Link Copied to Clipboard
Featured:

Tools for Electricians
Tools for Electricians
 

* * * * * * *
2023 National Electrical Code (NEC)
2023 NEC Now Available!
 
* * * * * * *

2020 Master Electrician Exam Preparation Combos
2020 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
Alan Belson
Alan Belson
Mayenne N. France
Posts: 1,803
Joined: March 2005
Top Posters(30 Days)
triple 3
BigB 3
Popular Topics(Views)
303,157 Are you busy
232,169 Re: Forum
216,902 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.5