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Old question/ New Answers? #87420 03/07/04 08:05 PM
Joined: Jan 2004
Posts: 1,507
G
George Little Offline OP
Member
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 08:38 PM
Joined: Feb 2004
Posts: 133
E
Electric Ian Offline
Member
200Amps per table 310.15(B)(6), right?

Re: Old question/ New Answers? #87422 03/07/04 08:48 PM
Joined: Apr 2002
Posts: 558
C
caselec Offline
Member
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 09:30 PM
Joined: Feb 2004
Posts: 133
E
Electric Ian Offline
Member
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 09:45 PM
Joined: Apr 2002
Posts: 558
C
caselec Offline
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240.4(B)


Curt Swartz
Re: Old question/ New Answers? #87425 03/07/04 10:28 PM
Joined: Feb 2004
Posts: 133
E
Electric Ian Offline
Member
Right you are caselec. Thanks.


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