ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
VDE 0100 to introduce AFCIs
by LongRunner. 01/17/18 10:32 AM
Fujifilm Recalls Power Adapter Wall Plugs
by Admin. 01/16/18 07:04 PM
Air Compressor feeder conductor sizing
by Potseal. 01/15/18 09:08 PM
Under carpet cable?
by HotLine1. 01/15/18 09:57 AM
New in the Gallery:
Housebilding DIY wiring
SE cable question
Who's Online Now
0 registered members (), 21 guests, and 11 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Old question/ New Answers? #87420
03/07/04 07:05 PM
03/07/04 07:05 PM
G
George Little  Offline OP
Member
Joined: Jan 2004
Posts: 1,489
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
2017 / 2014 NEC & Related Books and Study Guides
Re: Old question/ New Answers? #87421
03/07/04 07:38 PM
03/07/04 07:38 PM
E
Electric Ian  Offline
Member
Joined: Feb 2004
Posts: 133
MA, USA
200Amps per table 310.15(B)(6), right?

Re: Old question/ New Answers? #87422
03/07/04 07:48 PM
03/07/04 07:48 PM
C
caselec  Offline
Member
Joined: Apr 2002
Posts: 558
San Jose, CA
Residential = 200 Amps
Other than Residential = 180 Amps but can be protected by 200 amp breaker or fuse.


Curt Swartz
Re: Old question/ New Answers? #87423
03/07/04 08:30 PM
03/07/04 08:30 PM
E
Electric Ian  Offline
Member
Joined: Feb 2004
Posts: 133
MA, USA
what section of the code allows for protecting THWN 4/0 Aluminum with 200Amp fuses for other than Residential?

Re: Old question/ New Answers? #87424
03/07/04 08:45 PM
03/07/04 08:45 PM
C
caselec  Offline
Member
Joined: Apr 2002
Posts: 558
San Jose, CA
240.4(B)


Curt Swartz
Re: Old question/ New Answers? #87425
03/07/04 09:28 PM
03/07/04 09:28 PM
E
Electric Ian  Offline
Member
Joined: Feb 2004
Posts: 133
MA, USA
Right you are caselec. Thanks.


Featured:

2017 Master Electrician Exam Preparation Combos
2017 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
akmaster
akmaster
alaska
Posts: 70
Joined: June 2012
Show All Member Profiles 
Top Posters(30 Days)
sparky 23
Admin 20
Potseal 13
Popular Topics(Views)
243,525 Are you busy
180,324 Re: Forum
170,817 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.016s Queries: 14 (0.003s) Memory: 0.9728 MB (Peak: 1.1198 MB) Zlib enabled. Server Time: 2018-01-17 17:48:39 UTC