What types of materials does Class A cover in fire classifications?

Class A fire classifications specifically cover ordinary combustibles, which include materials such as wood, paper, cloth, rubber, and many plastics. These materials are common in everyday environments and can ignite and burn easily, making them a primary focus for Class A extinguishing agents. Firefighting efforts aimed at these types of fires typically involve water or other extinguishing agents that can cool the burning material and remove the heat necessary for combustion.

In contrast, other classifications such as flammable liquids (Class B), electrical fires (Class C), and cooking oils (often Class K) relate to different types of materials and require specialized extinguishing agents and tactics for effective fire suppression. Understanding the differences between classes of fire is essential for proper fire safety and extinguishing protocols, as using the incorrect method could lead to increased hazards or exacerbation of the fire.