What type of fire extinguisher is used for wood or plastic fires?

A Class A fire extinguisher is specifically designed to combat fires involving ordinary combustible materials, such as wood, paper, cloth, and many types of plastics. These materials are classified as Class A combustibles because they ignite easily, burn rapidly, and can produce significant heat and smoke when burning.

Class A fire extinguishers typically contain water, foam, or dry chemical agents that are effective in cooling the burning materials and suppressing flames. Using this type of extinguisher on wood or plastic fires is appropriate as it addresses the nature of the materials involved directly.

In contrast, other types of extinguishers are intended for different classes of fires. Class B extinguishers are meant for flammable liquids and gases, such as gasoline or oils. Class C extinguishers target electrical fires, while Class D extinguishers are specialized for combustible metals. Therefore, the designation of Class A is crucial for effectively responding to fires involving wood and plastic, making it the correct choice in this scenario.