Question 8056 of 938 · Maryland Journeyperson Electrician Exam
A permanently installed optional standby generator supplies a home. What must prevent it from feeding back into the utility system?
Exactly one answer is correct.
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Correct answer to question 8056
- D: Transfer equipment that prevents interconnection of normal and standby sources
Explanation
Section 702.5 requires transfer equipment for permanently installed optional standby systems. It must be designed to prevent the inadvertent interconnection of the normal and alternate sources, which protects utility workers from backfeed.
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