Which extinguishers are typically used to combat a Class "C" fire?

Class "C" fires involve energized electrical equipment, making it essential to use extinguishing agents that do not conduct electricity and can effectively suppress such fires. Carbon dioxide extinguishers are particularly effective for Class "C" fires because they displace oxygen, which helps to suffocate the flames while not leaving any residue that could further damage electrical equipment. Dry chemical extinguishers also work well for Class "C" fires as they can interrupt the chemical reaction of the fire and are non-conductive.

Choosing a combination of carbon dioxide and dry chemical means utilizing two agents that are safe for use around electrical sources, effectively addressing the risks associated with Class "C" fires. Other options that include foam or water contain properties that make them unsafe for electrical fires, as foam can conduct electricity in certain conditions, and water is highly conductive, which poses an electrocution risk.