Class A fires are primarily composed of which type of materials?

Class A fires are primarily associated with ordinary combustible materials, which include items such as wood, paper, and cloth. These materials are organic and typically found in residential and commercial settings, making Class A fires the most common type of fire encountered by firefighters.

When Class A fires occur, they produce embers and ash as they burn, requiring specific extinguishing methods. Water is often effective against these types of fires, as it cools the burning material below its ignition temperature and helps to extinguish the flames.

The other materials listed in the other options are associated with different classes of fires. For instance, flammable liquids are categorized as Class B fires, while combustible metals fall under Class D fires. Electrical equipment is classified as Class C fires. Understanding these classifications assists firefighters in applying the appropriate firefighting techniques and selecting the right extinguishing agents based on the type of materials involved in the fire.