A switch labeled as a 'three-circuit' switch is designed to control how many circuits?

• A. One circuit
• B. Two circuits
• C. Three circuits
• D. Four circuits

Answer: (C)

A switch labeled as a three-circuit device is indicating how many separate paths it can switch at once. This means it has three poles, so it can control three independent circuits simultaneously with a single action. Each pole handles its own circuit, and all three operate together when you use the switch. This is how you get to isolate or power multiple loads with one control. In contrast, a single-pole switch handles one circuit, a two-pole switch handles two, and a four-pole switch would handle four. So the labeled three-circuit switch is designed to control three circuits.