Question 3022 of 749 · Maryland Journeyperson Electrician Exam
A feeder supplies 100 A of continuous load and 30 A of noncontinuous load. What is the minimum feeder conductor ampacity before any adjustment?
Exactly one answer is correct.
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Correct answer to question 3022
- A: 155 A
Explanation
Feeder conductors must have an ampacity of at least 125 percent of the continuous load plus 100 percent of the noncontinuous load. 100 A times 1.25 is 125 A, plus 30 A gives 155 A. See 215.2(A)(1).
More questions: Feeders and Overcurrent Protection
- 3023What is the role of a supplementary overcurrent protective device?
- 3024Unless specifically permitted elsewhere, what is the maximum OCPD for 12 AWG copper conductors?
- 3025A feeder conductor has an ampacity of 115 A and does not supply receptacles for portable loads. What is the largest standard OCPD permitted under the next size up rule?
- 3026GFPE is required for a feeder disconnect rated 1000 A or more on which system?
- 3027Unless specifically permitted elsewhere, what is the maximum OCPD for 14 AWG copper conductors?
- 3028Three parallel sets of conductors give a total ampacity of 1140 A. What is the largest standard OCPD permitted?