Question 13091 of 731 · Texas Journeyman Electrician Exam
A motor has a nameplate full-load current of 24 A and a marked service factor of 1.15. What is the maximum rating of a separate overload device under 430.32(A)(1)?
Exactly one answer is correct.
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Correct answer to question 13091
- C: 30.0 A
Explanation
With a service factor of 1.15 or more, overloads may be sized at 125 % of the nameplate current: 24 x 1.25 = 30.0 A. 27.6 A is 115 %, which applies to motors without such a service factor or temperature rise marking.
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