What is the preferred extinguishing agent for Class C fires?

The preferred extinguishing agent for Class C fires is carbon dioxide (CO2). Class C fires involve electrical equipment and live electrical sources, which makes it crucial to use an agent that won't conduct electricity. CO2 is a non-conductive gas that displaces oxygen, effectively smothering the fire while minimizing the risk of electrocution for the person using the extinguisher.

Using water, for instance, on an electrical fire can lead to serious safety hazards, as water conducts electricity and could result in electric shock or even escalation of the fire. While foam and dry powder extinguishers are effective for certain types of fires, carbon dioxide is specifically designed for Class C situations, making it the safer and more effective choice in these circumstances.