What are the common categories of fires classified by the National Fire Protection Association?

The National Fire Protection Association (NFPA) classifies fires into several categories based on the materials that fuel them, which is essential for determining the appropriate firefighting methods and equipment. The correct answer includes Class A, B, C, D, and K fires.

Class A fires involve ordinary combustible materials such as wood, paper, and cloth. Class B fires are fueled by flammable liquids like gasoline, oils, and paints. Class C fires involve energized electrical equipment. Class D fires are related to combustible metals like magnesium, lithium, and sodium, which require special extinguishing agents. Lastly, Class K fires pertain to cooking oils and fats, commonly found in commercial kitchens.

This comprehensive classification system is vital for firefighters to effectively respond to various types of fires, ensuring safety and efficiency in extinguishing them based on the unique properties of the burning materials.