Which class of fire extinguisher is designed for ordinary combustibles like wood and paper?

The class of fire extinguisher that is specifically designed for ordinary combustibles such as wood, paper, and certain plastics is Class A. Class A extinguishers are filled with materials that effectively put out those types of fires by cooling and soaking the burning materials, which is essential in controlling fire fueled by these common materials.

Class B extinguishers, on the other hand, are utilized for flammable liquids like gasoline or oil, which require a completely different approach to extinguish. Class C extinguishers are intended for electrical fires, and Class D extinguishers are specifically made for combustible metals. Each class of extinguisher is tailored to combat different types of fires based on the materials involved, making it crucial to use the appropriate one to ensure safety and effectiveness.