Which statement is true about double-pole breakers?

• A. They provide 120V and range from 10 to 20 amps
• B. They provide 240V and have a rating of 15 to 50 amps to protect large appliances
• C. They provide 120V and have a rating of 5 to 15 amps
• D. They are used only for GFCI protection

Answer: (B)

Double-pole breakers are designed for two hot wires and deliver 240V to a circuit, which is used by many large appliances. They are sized with amp ratings from about 15 to 50 amps, matching the current those higher-load devices may draw and providing proper overcurrent protection. The two poles are tied together so they trip simultaneously (common trip) if the circuit overloads or a fault occurs, keeping the system safer. They’re intended for 240V circuits such as ranges, dryers, and large air conditioners, not for typical 120V branch circuits. While GFCI protection can be provided on some 240V circuits, double-pole breakers themselves are not limited to GFCI protection.