Water type fire extinguishers may be used on what class of fire?

Water type fire extinguishers may be used on what class of fire?

• A. Class B
• B. Class C
• C. Class A
• D. Class D

Answer: (C)

Water type extinguishers are designed for fires involving ordinary combustibles such as wood, paper, cloth, and many textiles. They work by absorbing heat and cooling the fuel below its ignition temperature, which stops the flame from continuing to burn. That cooling action is why they’re effective for Class A fires. They aren’t suitable for fires involving flammable liquids (water can spread the liquid and worsen the fire), electrical fires (water conducts electricity and can cause shock), or metal fires (water can react violently with certain metals). So the class these extinguishers are used for is ordinary combustibles.

Water type extinguishers are designed for fires involving ordinary combustibles such as wood, paper, cloth, and many textiles. They work by absorbing heat and cooling the fuel below its ignition temperature, which stops the flame from continuing to burn. That cooling action is why they’re effective for Class A fires.

They aren’t suitable for fires involving flammable liquids (water can spread the liquid and worsen the fire), electrical fires (water conducts electricity and can cause shock), or metal fires (water can react violently with certain metals). So the class these extinguishers are used for is ordinary combustibles.