Equipment & SystemsQuestion 291 of 521
Per NEC Table 430.250, what is the full-load current of a 7.5 HP, 230 V, three-phase motor?
a.15.2 A
b.28 A
c.22 A
d.11 A
Explanation
Table 430.250 lists 22 A for a 7.5 HP, 230 V three-phase motor. 15.2 A is 5 HP, 28 A is 10 HP at 230 V, and 11 A is 7.5 HP at 460 V.
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Related questions on this topic
- A feeder supplies three 460 V, three-phase motors: 25 HP (34 A), 15 HP (21 A), and 10 HP (14 A). Per NEC 430.24, what minimum feeder ampacity is required?
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