Class A extinguishers are for which type of fire?

Class A extinguishers are for which type of fire?

• A. Electrical fires
• B. Combustibles
• C. Metals
• D. Flammable liquids

Answer: (B)

Class A extinguishers are designed for ordinary combustibles—materials that burn and leave ash, such as wood, paper, cloth, and many common plastics. Their cooling action absorbs heat, which slows and stops the combustion process for these fuels. They’re not suitable for electrical fires, metals, or flammable liquids: electrical fires require non-conductive agents and power shutoff, metal fires need special dry powders for metals, and flammable liquids need extinguishers that suppress vapors and prevent spreading. So the best fit for Class A is fires involving ordinary combustibles.

Class A extinguishers are designed for ordinary combustibles—materials that burn and leave ash, such as wood, paper, cloth, and many common plastics. Their cooling action absorbs heat, which slows and stops the combustion process for these fuels. They’re not suitable for electrical fires, metals, or flammable liquids: electrical fires require non-conductive agents and power shutoff, metal fires need special dry powders for metals, and flammable liquids need extinguishers that suppress vapors and prevent spreading. So the best fit for Class A is fires involving ordinary combustibles.