Class C fires require extinguishers that are:

Class C fires involve energized electrical equipment, and as such, the extinguishing agents used must not conduct electricity. Therefore, non-water extinguishers, such as those using carbon dioxide (CO2) or dry chemical agents, are appropriate because they effectively extinguish the fire while minimizing the risk of electrical shock.

Using water-based extinguishers on Class C fires can lead to severe hazards because water is a conductor of electricity. It could cause the fire to spread and create a more dangerous situation by endangering the person using the extinguisher. Non-water extinguishers are designed specifically to tackle these types of fires safely and effectively, making them the correct choice for Class C fire scenarios.