Which extinguishing agent is commonly used for Class A, B, and C fires?

Which extinguishing agent is commonly used for Class A, B, and C fires?

• A. Water
• B. ABC dry chemical
• C. Wet powder
• D. Foam

Answer: (B)

A multipurpose extinguishing agent that covers A, B, and C fires is ideal because it interrupts the chemical reactions occurring in the flame and blankets the fuel, stopping reignition and cooling the surface. This ABC dry chemical extinguisher works on ordinary combustibles, flammable liquids, and energized electrical equipment, making it flexible for mixed hazards commonly encountered in facilities. Water is excellent for ordinary combustibles but unsafe for flammable liquids and electrical fires, so it isn’t suitable for all three classes. Foam handles some A and B risks but isn’t reliable for electrical fires. Wet chemical is specialized for cooking fats (K class) and doesn’t serve B or C fires.

A multipurpose extinguishing agent that covers A, B, and C fires is ideal because it interrupts the chemical reactions occurring in the flame and blankets the fuel, stopping reignition and cooling the surface. This ABC dry chemical extinguisher works on ordinary combustibles, flammable liquids, and energized electrical equipment, making it flexible for mixed hazards commonly encountered in facilities.

Water is excellent for ordinary combustibles but unsafe for flammable liquids and electrical fires, so it isn’t suitable for all three classes. Foam handles some A and B risks but isn’t reliable for electrical fires. Wet chemical is specialized for cooking fats (K class) and doesn’t serve B or C fires.