W wyboy Senior Member Dec 10, 2008 #1 NEC 230.90(A) Requires ungrounded service conductors have a rating not less than the service overcurrent device. Does NEC240.4(B) allowing next higher size overcurrent device 800 amps or less apply to service entrance conductors?
NEC 230.90(A) Requires ungrounded service conductors have a rating not less than the service overcurrent device. Does NEC240.4(B) allowing next higher size overcurrent device 800 amps or less apply to service entrance conductors?