Neutral conductors shall not be used for more than one branch circuit, one multiwire branch circuit, or more than one set of ungrounded feeder conductors except as allowed elsewhere in the Code. This statement is:

• A. True
• B. False
• C. Only For 277 V Circuits
• D. Only For Circuits Without GFCI

Answer: (A)

The main point is that a neutral conductor is intended to carry the return current for a single circuit unless it is part of a properly configured multiwire branch circuit (MWBC). Sharing a neutral among multiple branch circuits creates safety and disconnection hazards, because you could have a live neutral that remains energized after one circuit is turned off, or the neutral could carry sum currents instead of the difference, leading to overheating or shock risk.

The only acceptable sharing is within an MWBC, where two or more ungrounded conductors share one neutral and the feeders must be on different phases with a common disconnect (or other required simultaneous disconnection). In that scenario the neutral current is the difference between the circuit currents, and all ungrounded conductors are required to be simultaneously disconnectable.

Because of this, the statement—that neutral conductors shall not be used for more than one branch circuit or more than one MWBC (except as allowed elsewhere in the Code)—is true. The other options don’t fit because the rule is not limited to 277 V circuits or circuits without GFCI; exceptions exist only under specific Code allowances, not as a general rule.