Code Q&A: Sizing Conductors for a Single Motor

NEC requirements for sizing motor conductors

Q. What is the Code rule for sizing conductors serving a single continuous duty motor?

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A.  Conductors to a single motor must be sized not less than 125% of the motor full load current (FLC) rating as listed in Table 430.247 [Direct-Current Motors], Table 430.248 [Single-Phase Motors], or Table 430.250 [Three-Phase Motors (430.22)].

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