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

Topic Options
Rate This Topic
#87420 - 03/07/04 04:05 PM Old question/ New Answers?
George Little Offline
Member
Registered: 01/18/04
Posts: 1488
Loc: Michigan USA
If I'm using THWN 4/0 Aluminum conductors to feed a Service panel with a 200 ampere main, What size Service do I have? Is the rating 200 amps or 180 amps?
_________________________
George Little
Top
2017 / 2014 NEC & Related Books and Study Guides
#87421 - 03/07/04 04:38 PM Re: Old question/ New Answers?
Electric Ian Offline
Member
Registered: 02/10/04
Posts: 133
Loc: MA, USA
200Amps per table 310.15(B)(6), right?
Top
#87422 - 03/07/04 04:48 PM Re: Old question/ New Answers?
caselec Offline
Member
Registered: 04/14/02
Posts: 558
Loc: San Jose, CA
Residential = 200 Amps
Other than Residential = 180 Amps but can be protected by 200 amp breaker or fuse.
_________________________
Curt Swartz
Top
#87423 - 03/07/04 05:30 PM Re: Old question/ New Answers?
Electric Ian Offline
Member
Registered: 02/10/04
Posts: 133
Loc: MA, USA
what section of the code allows for protecting THWN 4/0 Aluminum with 200Amp fuses for other than Residential?
Top
#87424 - 03/07/04 05:45 PM Re: Old question/ New Answers?
caselec Offline
Member
Registered: 04/14/02
Posts: 558
Loc: San Jose, CA
240.4(B)
_________________________
Curt Swartz
Top
#87425 - 03/07/04 06:28 PM Re: Old question/ New Answers?
Electric Ian Offline
Member
Registered: 02/10/04
Posts: 133
Loc: MA, USA
Right you are caselec. Thanks.
Top

Member Spotlight
Member Since: 07/05/02
Posts: 8211
New in the Gallery:
SE cable question
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box


Who's Online
0 registered (), 42 Guests and 8 Spiders online.
Key: Admin, Global Mod, Mod
 
New in the Gallery:
SE cable question
 
Top Posters (30 Days)
Admin 51
HotLine1 43
gfretwell 17
Trumpy 16
Ruben Rocha 13
 
Newest Members
clee512, Jdscott2005, FAIZAN, Regitest2, sureshazhagai

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