Article 240 provides the general requirements for overcurrent protection and overcurrent protective devices (OCPDs). The job of an OCPD is to open the circuit if the current reaches a value that may ...

All questions and answers are based on the 2017 NEC. Q. What is the Code requirement for sizing the overcurrent protection of conductors? A. Except as permitted by Sec. 240.4(A) through (G), ...