Which class of fires involves combustibles such as wood, paper, plastics, rubber, and cloth?

Which class of fires involves combustibles such as wood, paper, plastics, rubber, and cloth?

• A. B
• B. C
• C. A
• D. D

Answer: (C)

Fires involving ordinary combustibles like wood, paper, plastics, rubber, and cloth are Class A fires. These fuels are solid, leave ash, and burn in a way that cooling with water is the most effective suppression method. The materials listed are classic examples of ordinary combustibles, so this classification fits best. Other classes cover different fuel types—flammable liquids (Class B), energized electrical equipment (Class C), and combustible metals (Class D)—which don’t apply to the items described here.

Fires involving ordinary combustibles like wood, paper, plastics, rubber, and cloth are Class A fires. These fuels are solid, leave ash, and burn in a way that cooling with water is the most effective suppression method. The materials listed are classic examples of ordinary combustibles, so this classification fits best. Other classes cover different fuel types—flammable liquids (Class B), energized electrical equipment (Class C), and combustible metals (Class D)—which don’t apply to the items described here.