A Class A Fire is defined by which of the following characteristics?

A Class A Fire is characterized by the combustion of ordinary combustibles, which primarily include materials such as wood, paper, cloth, and some plastics. These materials are typically found in residential and commercial environments, making them common sources of ignition. When a Class A Fire occurs, water is the most effective extinguishing agent, as it cools the burning material and removes heat from the fire.

The other classifications of fires relate to different materials that possess distinct properties and behaviors when ignited. Flammable liquids, such as gasoline and oils, are associated with Class B Fires, while combustible metals fall under Class D Fires. Electrical components typically involve Class C Fires, which require specialized techniques to extinguish safely, particularly due to the risk of shock or further fires caused by water. Understanding these classifications helps in effectively responding to various fire situations.