What distinguishes a Type A fire from a Type B fire?

Type A fires are distinguished by their involvement with ordinary combustibles such as wood, paper, cloth, rubber, and some plastics. These materials typically burn with a solid state of combustion. In contrast, Type B fires are specifically associated with flammable liquids and gases, including gasoline, oil, grease, and paints.

The classification is essential because it determines the appropriate extinguishing method and the type of fire extinguisher to use. For example, water can be effectively used on Type A fires, but using water on a Type B fire can spread the flames due to the flammable liquids involved. Understanding these distinctions is critical for effective fire response and safety procedures.