NEC 2026 Compatible

Calculate the feeder conductor ampacity for a group of three motors: 10HP (14A), 20HP (27A), and 30HP (40A), all 460V 3-phase.

Master Level📋 NEC 430.24Motors and Controls
Circuit Diagram
MOTOR CIRCUIT — LOCKED-ROTOR CURRENT 460V 3-Phase DISC Switch M 50 HP LRC = 363A (Design B) Per NEC Table 430.251(B) EGC
A

81A

B

91A

C

101A

D

125A

Explanation & Direct Citation

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    Motors and Controls Practice Question: NEC 430.24 | SparkShift | SparkShift