What is the difference between Class A and Class B fires?

Class A fires are those that involve combustible materials, such as wood, paper, textiles, rubber, and some plastics, which can ignite and support the flames. The defining characteristic of Class A fires is the solid materials involved, which typically need to be extinguished using water or other methods that cool the material and remove heat from the fire.

On the other hand, Class B fires involve flammable liquefied gases and liquids, such as gasoline, oil, and solvents. These fires require different extinguishing agents, such as foam, dry chemicals, or carbon dioxide, which work to suffocate the fire or prevent it from spreading.

Understanding this distinction is crucial for effective fire response, as the methods and extinguishing agents used for each class are tailored to the specific materials involved in the fire. This knowledge aids firefighters in selecting the right approach to combat the fire safely and effectively.