What type of extinguisher is suitable for a Class "C" fire?

A Class "C" fire involves flammable gases or liquids, such as electrical fires or energized electrical equipment. A carbon dioxide (CO2) extinguisher is specifically designed for such fires because it effectively displaces oxygen, which is necessary for combustion, and it does so without conducting electricity.

Using a CO2 extinguisher for a Class "C" fire eliminates the risk of an electrical shock, which is a significant concern with other types of extinguishers. Water extinguishers, for example, would be unsafe to use on electrical fires due to their conductivity, which can create a serious hazard. Dry chemical extinguishers are also effective on Class "C" fires, but CO2 is often favored for its clean and residue-free operation, making it ideal for protecting sensitive electrical equipment. Foam extinguishers are primarily suitable for Class A and B fires and are not appropriate for Class C scenarios.

In summary, the CO2 extinguisher is the best choice for Class "C" fires as it safely extinguishes flames without the risk of electrical conduction while being effective at cutting off the oxygen supply.