In a 2-wire control circuit, the grounded conductor (neutral) is permitted to be connected to which line?

In a 2-wire control circuit, the grounded conductor (neutral) is typically connected to L2. This is due to the configuration often used in control systems where L1 carries the line voltage while L2 serves as the neutral return path.

Connecting the neutral to L2 helps maintain safety and proper operation within the system by ensuring that the control devices connected to L1 have a clear path back to the source. In typical residential and commercial wiring practices, the hot leg (L1) is used to carry the live voltage, while L2, acting as the neutral, completes the circuit by providing a return path.

In this context, other configurations, where the neutral is connected to L1, may not be compliant with standard wiring practices, as it could create an imbalance or potential hazards in the circuit. Therefore, connecting the neutral to only L2 is not only standard, but also reinforces safe operation while adhering to the code requirements.