Control circuit pilot devices for a motor starter are connected between which points?

• A. L1 and L2
• B. L2 and the starter coil
• C. L1 and the starter coil
• D. L3 and L1

Answer: (C)

The correct answer involves the connection of control circuit pilot devices for a motor starter to L1 and the starter coil. In a typical motor control circuit, L1 represents one of the supply lines (often referred to as line or phase), and the starter coil is the component that energizes or de-energizes the motor starter operation.

When a pilot device, such as a push button or a limit switch, is activated, it completes the circuit between L1 and the starter coil. This action allows current to flow and energizes the starter coil, which then engages the motor starter contacts. This connection is critical for the control of the motor, ensuring that the starter can be actuated when needed.

To further clarify the operation, if the connection were to be made between L2 and the starter coil or L3 and L1, the control circuit would not function properly for the intended application, as the relevant current paths would not be established in a standard single-phase setup. Thus, the connection at L1 is essential for effective control of the motor starter.