Class A extinguishers are designed for fires involving which materials?

Class A extinguishers are designed for fires involving which materials?

• A. Flammable Liquids
• B. Cooking, Greases, Fats, Oils
• C. Ordinary Combustibles
• D. Electrical Equipment

Answer: (C)

Fire extinguishers are categorized by the type of fuel they’re designed to fight. Class A extinguishers target ordinary combustibles such as wood, paper, cloth, and trash, and they work mainly by cooling the fuel below its ignition temperature with water-based or cooling agents. This makes them the appropriate choice for fires involving those materials. Fires involving flammable liquids fall under Class B and require smothering or vapor-suppressing agents; cooking greases and fats are Class K (or F in some systems) and need a wet chemical that saponifies fats; electrical equipment fires are Class C and require non-conductive extinguishing agents. So this option matches ordinary combustibles.

Fire extinguishers are categorized by the type of fuel they’re designed to fight. Class A extinguishers target ordinary combustibles such as wood, paper, cloth, and trash, and they work mainly by cooling the fuel below its ignition temperature with water-based or cooling agents. This makes them the appropriate choice for fires involving those materials. Fires involving flammable liquids fall under Class B and require smothering or vapor-suppressing agents; cooking greases and fats are Class K (or F in some systems) and need a wet chemical that saponifies fats; electrical equipment fires are Class C and require non-conductive extinguishing agents. So this option matches ordinary combustibles.