Which fire extinguisher class is specifically designed for combustibles like wood and paper?

Class A extinguishers are specifically designed to combat fires involving ordinary combustible materials such as wood, paper, cloth, trash, and some plastics. This classification reflects the nature of these materials and the type of flames they produce. Class A extinguishers typically use water or foam to cool the burning material and eliminate the heat that sustains the fire.

The effectiveness of Class A extinguishers hinges on their ability to penetrate and soak into the burning material, thereby extinguishing the flames effectively. Understanding the classifications is essential for anyone dealing with fire safety, as using the wrong type of extinguisher can lead to ineffectiveness and potential hazards. For example, using a Class B extinguisher, designed for flammable liquids, would not be suitable for a fire fueled by paper or wood, as it may not address the combustion processes properly.