What type of extinguisher is recommended for Class C fires?

Class C fires involve flammable gases or electrical equipment. The fire extinguishing agents used for these types of fires must not conduct electricity, which makes water-based extinguishers unsuitable. CO2 and pressurized dry chemical ABC extinguishers are appropriate choices because they effectively smother the flames without risk of electrical conduction. CO2 extinguishers displace oxygen, which is essential for fire, while dry chemical extinguishers interrupt the fire's chemical reaction and can also be used on other classes of fires.

Foam extinguishers are effective against Class A (ordinary combustibles) and Class B (flammable liquids) fires but are not suitable for Class C fires due to the risk of electricity conduction. Powder extinguishers, while versatile, may not always be preferred for electrical fires as they do not have the same effectiveness and safety assurances when it comes to electrical hazards as CO2 or dry chemical extinguishers do. Using the appropriate type not only ensures effective fire suppression but also enhances the safety of the operator and surrounding personnel.