In the rating 2-A:10-B:C, the C indicates the extinguisher is suitable for use on energized electrical equipment.

In the rating 2-A:10-B:C, the C indicates the extinguisher is suitable for use on energized electrical equipment.

• A. Non-conductive electrical equipment
• B. Energized electrical equipment
• C. Non-electrical fires only
• D. Flammable liquids

Answer: (B)

The rating’s C denotes Class C fires, which are fires involving energized electrical equipment. This means the extinguisher has been tested for use on live electrical devices and uses an extinguishing agent that is non-conductive, helping prevent electrical shock or energizing the circuit through the extinguisher. So, the presence of the C tells you the extinguisher is suitable for fires with live electrical equipment. The other parts of the rating show it can also handle ordinary combustibles and flammable liquids, but the C is specifically about electricity. It isn’t describing non-electrical fires only or non-conductive equipment; it’s signaling safety and compatibility when electricity is involved.

The rating’s C denotes Class C fires, which are fires involving energized electrical equipment. This means the extinguisher has been tested for use on live electrical devices and uses an extinguishing agent that is non-conductive, helping prevent electrical shock or energizing the circuit through the extinguisher. So, the presence of the C tells you the extinguisher is suitable for fires with live electrical equipment. The other parts of the rating show it can also handle ordinary combustibles and flammable liquids, but the C is specifically about electricity. It isn’t describing non-electrical fires only or non-conductive equipment; it’s signaling safety and compatibility when electricity is involved.