Question 7033 of 844 · Washington 01 Journey Level Electrician Exam
A plug-in circuit breaker is back-fed to supply a panelboard. How must it be installed?
Exactly one answer is correct.
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Correct answer to question 7033
- A: Secured by an additional fastener that requires more than a pull to release it
Explanation
Section 408.36(D) requires back-fed plug-in breakers to be secured in place by an additional fastener that requires other than a pull to release. Otherwise a breaker with energized line terminals could be pulled off the bus.
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