Which type of fire extinguisher is suitable for fires involving ordinary combustibles?

Class A fire extinguishers are specifically designed to combat fires that involve ordinary combustibles such as wood, paper, cloth, and certain types of plastics. These materials are common in many environments, including homes, offices, and warehouses. Class A extinguishers use water or a similar agent to cool and extinguish the fire, making them effective for these types of fires.

The effectiveness of Class A extinguishers comes from their ability to lower the temperature of the burning material and reduce its heat, which is critical for extinguishing fires involving ordinary combustibles. This type of extinguisher is typically marked with a green triangle and the letter "A," signifying its suitability for these kinds of fire situations.

In contrast, other types of extinguishers, such as Class B, Class C, and Class D, are designed for fires involving flammable liquids, electrical equipment, and combustible metals, respectively. Each type has its specific applications, which highlights the importance of using the correct extinguisher for the type of fire you are facing.