A full voltage starter has:

A full voltage starter has:

• A. resistors in the starting circuit
• B. one contactor
• C. two contactors and a time delay relay
• D. two contactors

Answer: (B)

Direct-on-line starting delivers full line voltage to the motor right at start, using a single contactor to switch the power and usually an overload protection device. That simple setup is what defines a full-voltage starter: no starting resistors to drop voltage, and no extra contactors or timing devices needed for sequencing. Therefore, the essential component is one contactor. The other descriptions point to different starting methods: using resistors in the circuit would reduce the voltage during startup, and having two contactors with or without a time delay relay implies some form of sequencing or soft-start, which isn’t a feature of a basic full-voltage starter.

Direct-on-line starting delivers full line voltage to the motor right at start, using a single contactor to switch the power and usually an overload protection device. That simple setup is what defines a full-voltage starter: no starting resistors to drop voltage, and no extra contactors or timing devices needed for sequencing. Therefore, the essential component is one contactor.

The other descriptions point to different starting methods: using resistors in the circuit would reduce the voltage during startup, and having two contactors with or without a time delay relay implies some form of sequencing or soft-start, which isn’t a feature of a basic full-voltage starter.