What type of flammable substance does Class A specifically target?

Class A fire extinguishers specifically target combustible solids, which include materials like wood, paper, cloth, rubber, and some plastics. These are common materials that can catch fire and produce embers, leading to intense fires. Class A extinguishers work by cooling the burning material and suppressing the fire, which is effective for this type of solid fuel.

Flammable liquids, gases, and combustible metals are addressed by different classes of fire extinguishers. For example, Class B extinguishers are designed for flammable liquids and gases, while Class D is used for combustible metals. The distinction is crucial for effective fire suppression because using the wrong type of extinguisher can be ineffective or even dangerous.