What type of materials are classified under Class A fire?

Class A fires are characterized by the involvement of ordinary combustibles, which include materials such as wood, paper, cloth, rubber, and some plastics. These materials can ignite and sustain a fire easily when exposed to flames or heat. The specific classification system for fires helps in determining the appropriate firefighting methods and extinguishing agents to be used, as different types of fires require different approaches.

In this scenario, ordinary combustibles are the primary concern for Class A fires. When tackling a Class A fire, water is typically used as it is effective in cooling the burning materials and extinguishing the flames. Understanding the behavior of these materials in a fire context is essential for safety and effective fire response.

Other materials listed in the options fall under different classifications. Flammable liquids would be categorized under Class B fires, while electrical equipment is classified as Class C. Metal fires, depending on the type of metal, may fall under Class D. Each class requires specific firefighting techniques tailored to the characteristics of the burning materials, making it crucial to distinguish between them correctly.