Which class of fire includes ordinary combustibles such as paper and wood?

Which class of fire includes ordinary combustibles such as paper and wood?

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

Answer: (C)

Fire classifications are based on the fuel involved, which guides how to fight the fire. Ordinary combustibles such as paper and wood belong to the group that is best cooled with water, because absorbing heat lowers the material’s temperature below its ignition point and stops the fire from spreading. This group includes items that burn with visible flames and leave ash, like paper, wood, cloth, and cardboard. The other groups cover different fuels: Class B for flammable liquids like gasoline, Class C for energized electrical equipment, and Class D for combustible metals. So, ordinary combustibles are in Class A.

Fire classifications are based on the fuel involved, which guides how to fight the fire. Ordinary combustibles such as paper and wood belong to the group that is best cooled with water, because absorbing heat lowers the material’s temperature below its ignition point and stops the fire from spreading. This group includes items that burn with visible flames and leave ash, like paper, wood, cloth, and cardboard. The other groups cover different fuels: Class B for flammable liquids like gasoline, Class C for energized electrical equipment, and Class D for combustible metals. So, ordinary combustibles are in Class A.