What is a neutral conductor?

• A. A signaling conductor.
• B. A conductor that carries current back to the source and is at or near earth potential.
• C. A conductor that never carries current.
• D. A protective device on the line.

Answer: (B)

The neutral conductor serves as the return path for current, completing the circuit back to the source. It is bonded to earth at the service point so its voltage stays at or near earth potential, which helps keep system voltages referenced safely and provides a path to ground for fault conditions. In a typical circuit, the current flows from the hot conductor through the load and back via the neutral; this is why the neutral can carry current and is not simply a non-current-carrying wire. It’s not a signaling conductor or a protective device—the signaling lines and protective devices are different components used for control or protection, respectively.