In a multi-location lighting circuit, what configuration includes three switches to control a single load?

In a multi-location lighting circuit, what configuration includes three switches to control a single load?

• A. Single-pole
• B. Four-way
• C. Double-pole
• D. Three-way

Answer: (D)

In multi-location lighting, controlling a single load from more than one place is done with a combination of three-way and four-way switches. This setup allows you to toggle the light from multiple locations. When you have three switches total for one load, the end switches are three-way switches and the middle one is a four-way switch. The two three-way switches at the ends establish the basic two-location control, and inserting a four-way in between lets a third location also influence the circuit. This arrangement is still described by the three-way family of circuits—the system is designed for control from multiple locations, now extended to three by adding the intermediate four-way.

In multi-location lighting, controlling a single load from more than one place is done with a combination of three-way and four-way switches. This setup allows you to toggle the light from multiple locations. When you have three switches total for one load, the end switches are three-way switches and the middle one is a four-way switch. The two three-way switches at the ends establish the basic two-location control, and inserting a four-way in between lets a third location also influence the circuit. This arrangement is still described by the three-way family of circuits—the system is designed for control from multiple locations, now extended to three by adding the intermediate four-way.