Equipment & SystemsQuestion 297 of 521
NEC 430.75 requires that motor control circuits be arranged so that:
a.The control circuit is disconnected from all sources of supply when the disconnecting means is open
b.Control circuits are always 24 V
c.Control conductors are the same size as power conductors
d.Control circuits need no overcurrent protection
Explanation
NEC 430.75 requires the disconnecting means to open the motor control circuit from all sources when placed in the off position (with limited exceptions), so a technician is not exposed to energized controls. Control voltage level, conductor size parity, and 'no protection' are not the rule.
Law Reference: 2023 NEC §430.75Practice all 521 questions free — no signup required.
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