1.4 KiB
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Article 430: Motors, Motor Circuits, and Controllers |
Article 430: Motors, Motor Circuits, and Controllers
Part I. General
430.1 Scope.
This article covers motors, motor branch-circuit and feeder conductors and their protection, motor overload protection, motor control circuits, motor controllers, and motor control centers.
Part II. Motor Circuit Conductors
430.21 General.
Part II specifies ampacities of conductors that are capable of carrying the motor current without overheating under the conditions specified.
Part II shall not apply to motor circuits rated over 1000 volts, nominal.
Informational Note: For over 1000 volts, nominal, see Part XI.
Articles 250, 300, and 310 shall not apply to conductors that form an integral part of equipment, such as motors, motor controllers, motor control centers, or other factory-assembled control equipment.
Informational Note: See 110.14(C) and 430.9(B) for equipment device terminal requirements.
430.22 Single Motor.
Conductors that supply a single motor used in a continuous duty application shall have an ampacity of not less than 125 percent of the motor full-load current rating, as determined by 430.6(A)(1), or not less than specified in 430.22(A) through (G).