What is the proper action for handling a Class C fire?

For handling a Class C fire, which involves electrical equipment, the proper action emphasizes the importance of shutting off the electrical current before attempting to extinguish the fire. Using a Halon fire extinguisher is appropriate in this scenario because Halon is effective on flammable gases and electrical fires, and it does not leave harmful residues that could damage sensitive electrical equipment.

When one is dealing with a fire in electrical equipment, using water is not advisable because water conducts electricity and can pose a significant risk of electrocution. Similarly, while foam extinguishers can be effective for Class A fires (ordinary combustibles) or Class B fires (flammable liquids), they are not suitable for electrical fires due to their water content. Dry chemical extinguishers can be effective for Class C fires, but without shutting off the current first, it may not be safe to use them. Therefore, the combination of using the correct extinguisher and addressing the electrical source first makes the action involving the Halon extinguisher the best practice for handling a Class C fire.