Equipment & SystemsQuestion 278 of 521
Using NEC Table 430.250, what is the full-load current of a 100 HP, 460 V, three-phase motor?
a.156 A
b.124 A
c.96 A
d.248 A
Explanation
Table 430.250 lists 124 A for a 100 HP, 460 V three-phase motor. 156 A is 125 HP, 96 A is 75 HP, and 248 A is a 100 HP motor at 230 V.
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Related questions on this topic
- A continuous-duty motor has a nameplate FLA of 62 A and a service factor of 1.15. What is the maximum overload device rating at 125% under NEC 430.32(A)(1)?
- If the 125% overload device will not allow a 62 A (SF 1.15) motor to start, NEC 430.32(C) permits increasing the overload trip setting to a maximum of what value?
- Per NEC Table 430.248, what is the full-load current of a 2 HP, single-phase, 230 V motor?
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