Which class of fire includes ordinary combustibles such as wood and paper?

Class A fires involve ordinary combustibles that can include materials such as wood, paper, cloth, rubber, and some plastics. These materials can ignite easily and produce ash when burned. This class of fire is characterized by the combustion of solid materials that are not considered flammable liquids or gases.

Fire extinguishers designed for Class A fires typically use water or water-based agents, as they are effective in cooling the burning materials and suppressing the fire. Using the correct type of extinguisher for a Class A fire is crucial for effectively putting it out and preventing the fire from spreading. The focus on ordinary combustibles is essential for safety in the workplace and ensuring that appropriate firefighting measures are in place.