Question 5037 of 731 · Texas Journeyman Electrician Exam
What is the minimum copper equipment grounding conductor for a feeder protected by a 400 A OCPD?
Exactly one answer is correct.
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Correct answer to question 5037
- A: 3 AWG
Explanation
Table 250.122 requires at least 3 AWG copper for OCPDs rated 400 A. The EGC is sized on the OCPD rating, not on the conductor ampacity.
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