Sizing Conductors, Part XLIV

摘要

Article 210 in the National Electrical Code (NEC) covers branch circuits, with the exception of circuits that supply motor loads only. Article 430 covers these branch circuits, and Part Ⅱ covers motor-circuit conductors. As stated in 430.21, Part Ⅱ specifies ampacities of conductors that are capable of carrying the motor current without overheating under the conditions specified. Section 430.22 has specifications on sizing conductors that supply a single motor, and 430.24 has specifications on sizing conductors supplying several motors or a motor or motors and other load or loads.