What is a common method for extinguishing Class C fires?

The common method for extinguishing Class C fires, which involve energized electrical equipment, is the use of dry chemical agents. Dry chemical extinguishers are effective because they interrupt the chemical reaction of the fire and also do not conduct electricity, making them safe to use on live electrical equipment.

While options like water spray and foam application may be effective for other types of fires, they are not suitable for Class C fires due to the risk of electric shock and the potential for water to create conductive pathways. Carbon dioxide is also a valid method for Class C fires but may not be as commonly referenced as dry chemical agents in certain contexts. However, dry chemical agents remain the most recognized and versatile choice for effectively suppressing fires involving electrical equipment.