What is the main feature of a Class A fire?

The main feature of a Class A fire is that it involves ordinary combustible materials such as wood, paper, cloth, trash, and some plastics. These materials are solid and typically easy to extinguish when proper methods are employed. Class A fires primarily involve substances that burn with a solid residue, and they require specific extinguishing agents, like water or Class A foam, to effectively put them out.

Other class fire types involve different materials: flammable liquids (which are associated with Class B fires), electrical hazards (linked to Class C fires), and greasy substances (generally pertaining to Class K fires, which deal with cooking oils and fats). Understanding these distinctions is crucial for effective fire response and safety management.