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Subject - FLC
David Hyatt When calculating motors do you take nameplate amp load or use HP in 430.149 & 430.150 to determine wire and breaker size?
Ryan_J No. From 430.6...
quote:
(A) General Motor Applications. For general motor applications, current ratings shall be determined based on (1) and (2).
(1) Table Values. The values given in Table 430.147, Table 430.148, Table 430.149, and Table 430.150, including notes, shall be used to determine the ampacity of conductors or ampere ratings of switches, branch-circuit short-circuit and ground-fault protection, instead of the actual current rating marked on the motor nameplate. Where a motor is marked in amperes, but not horsepower, the horsepower rating shall be assumed to be that corresponding to the value given in Table 430.147, Table 430.148, Table 430.149, and Table 430.150, interpolated if necessary.
David Hyatt Thanks Ryan.
Ryan_J You're certainly welcome :)