Branch-Circuit Feeder and Service Calculations, Part LXIII

摘要

Article 220 of the national electrical code(NEC) provides requirements for calculating branch-circuit, feeder and service loads and is divided into five parts. Part I provides general requirements for calculation methods. Part II covers requirements for branch-circuit load calculations. The branch-circuit load calculations can either be used as stand-alone calculations or combined with other load calculations from Article 220. Results from calculations in Part II can be used to size branch-circuit conductors and branch-circuit overcurrent devices. Results from Part II can also be incorporated with results from other sections in Article 220 to size conductors and over-current devices for feeders and services.