Question 5033 of 749 · Maryland Journeyperson Electrician Exam
A subpanel in the same building is fed by a feeder from the service. How must the grounded (neutral) conductor be treated at the subpanel?
Exactly one answer is correct.
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Correct answer to question 5033
- A: Isolated from the enclosure and the EGC bar
Explanation
A grounded conductor may not be connected to normally non-current-carrying metal parts or EGCs on the load side of the service disconnect. Bonding there would put neutral current on the EGCs. See 250.24(A)(5) and 250.142(B).
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