What type of extinguisher is suitable for Class A fires?

Water or foam extinguishers are suitable for Class A fires as they are specifically designed to combat fires that involve ordinary combustible materials, such as wood, paper, cloth, and some plastics. The cooling effect of water helps to reduce the temperature of the burning material below its ignition point, effectively extinguishing the fire. Foam extinguishers can also help blanket the fuel, preventing re-ignition by cutting off the oxygen supply.

In contrast, other types of extinguishers serve specific purposes: CO2 extinguishers are better suited for Class B (flammable liquid) and electrical fires, as they displace oxygen without leaving any residue. Dry chemical extinguishers are versatile and can be used on multiple classes of fires, but they are not the most effective option for Class A situations. Wet chemical extinguishers are specifically designed for Class K fires, typically involving cooking oils and fats, making them inappropriate for Class A fires.