Answer :

Final answer:

Class C fires, involving electrical equipment, should be extinguished using carbon dioxide or dry chemical fire extinguishers. These extinguishers are non-conductive and can suppress the fire without risking electrical shock. Water or foaming agent extinguishers are not suitable due to their conductivity.

Explanation:

For Class C fires, which involve electrical equipment, the appropriate type of fire extinguisher is one that is specifically designated for electrical fires. The national fire codes typically recommend carbon dioxide or dry chemical extinguishers for these types of fires.

These extinguishers do not conduct electricity and can effectively extinguish the fire without creating a hazard for people in the vicinity. While carbon tetrachloride was once used in fire extinguishers for electrical fires, it is no longer recommended due to the formation of the toxic gas phosgene.

When addressing electrical fires, it's critical to use a fire extinguishing agent that won't exacerbate the situation. The dry chemical extinguishers work by smothering the fire and interrupting the chemical reaction. On the other hand, carbon dioxide extinguishers remove the oxygen that fuels the fire, thereby suppressing it.

It's important to note that water or foaming plastics-based fire extinguishers are not suitable for Class C fires, as they can conduct electricity, which may lead to additional safety risks, such as electrical shock hazards.

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Rewritten by : Barada