Which type of portable fire extinguisher is most appropriate for electrical fires?

Utilizing a Class C extinguisher for electrical fires is the appropriate choice because these extinguishers are specifically designed to combat fires involving electrical equipment, such as wiring, transformers, and appliances. One of the key characteristics of Class C extinguishers is that they do not conduct electricity, making them safe to use on energized electrical systems.

In contrast, Class A extinguishers are intended for ordinary combustibles like wood or paper, Class B extinguishers are used for flammable liquids, and Class D extinguishers are designed for combustible metals. Since using the wrong type of extinguisher can pose serious safety risks, particularly with electrical fires, choosing a Class C ensures that the fire can be tackled without the risk of electrocution or spreading the fire. Thus, a Class C extinguisher is the safest and most effective option for such fires.