Question 4094 of 844 · Washington 01 Journey Level Electrician Exam
A multiwire branch circuit supplies receptacles in a dwelling. What does the NEC require at the point where the branch circuit originates?
Exactly one answer is correct.
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Correct answer to question 4094
- C: A means to simultaneously disconnect all ungrounded conductors
Explanation
210.4(B) requires each multiwire branch circuit to be provided with a means that will simultaneously disconnect all ungrounded conductors where the circuit originates. A 2-pole breaker or identified handle ties on single-pole breakers meet this rule.
More questions: Branch Circuits, GFCI and AFCI
- 4095A multiwire branch circuit in general may supply only which type of load?
- 4096How must the conductors of a multiwire branch circuit be identified in a panelboard?
- 4097In a 120/240-volt, 3-wire multiwire branch circuit, why must the two ungrounded conductors be connected to opposite lines?
- 4098In a dwelling living room, what may substitute for the required wall-switch-controlled lighting outlet?
- 4099In which dwelling rooms is a switched receptacle NOT permitted as a substitute for the required wall-switch-controlled lighting outlet?
- 4100A dwelling interior stairway has eight risers between floor levels. Where are wall switches required for the stairway lighting?