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?
200Amps per table 310.15(B)(6), right?
Residential = 200 Amps
Other than Residential = 180 Amps but can be protected by 200 amp breaker or fuse.
what section of the code allows for protecting THWN 4/0 Aluminum with 200Amp fuses for other than Residential?
Right you are caselec. Thanks.