Class A fires involve which materials?

Class A fires involve which materials?

• A. Flammable liquids
• B. Energized electrical equipment
• C. Combustible Metals
• D. Ordinary combustibles such as wood and paper

Answer: (D)

Fires are classified by the fuel involved, and Class A refers to ordinary combustibles. These are materials like wood, paper, cloth, and similar items that burn and typically leave ash. Water is especially effective for these fires because it cools the fuel enough to drop its temperature below the ignition point, preventing re-ignition. The other options point to different fire classes: flammable liquids produce Class B fires, energized electrical equipment produces Class C fires, and combustible metals produce Class D fires. So ordinary combustibles best describe Class A.

Fires are classified by the fuel involved, and Class A refers to ordinary combustibles. These are materials like wood, paper, cloth, and similar items that burn and typically leave ash. Water is especially effective for these fires because it cools the fuel enough to drop its temperature below the ignition point, preventing re-ignition. The other options point to different fire classes: flammable liquids produce Class B fires, energized electrical equipment produces Class C fires, and combustible metals produce Class D fires. So ordinary combustibles best describe Class A.