What type of fire requires a Class C fire extinguisher?

Class C fire extinguishers are specifically designed for fires that involve electrical equipment. This includes incidents where electrical fires are ignited by faulty wiring, overloaded circuits, or malfunctioning devices. When dealing with Class C fires, it's crucial to use the appropriate extinguisher because using water or other agents that conduct electricity can pose significant risks, including electrocution.

The reason A is the correct answer is that Class C extinguishers often contain non-conductive agents such as carbon dioxide or dry chemical agents that effectively smother the fire without conducting electricity back to the user. This makes them ideal for tackling fires in environments like offices, factories, or workshops where electrical appliances are in use.

Other types of fires, such as those involving flammable liquids (Class B fires) or combustible materials like wood and paper (Class A fires), require different types of extinguishers. Additionally, the option regarding all industrial fires is too broad, as not all industrial fires involve electrical equipment. Each class of fire necessitates a specific type of extinguisher, emphasizing the importance of identifying the fire type before attempting to extinguish it.