Which type of fire extinguisher is primarily for use on electrical equipment?

The correct choice for a fire extinguisher primarily used on electrical equipment is indeed the Type C extinguisher. This type of extinguisher is specifically designed for fires that involve electrical equipment such as wiring, circuit breakers, and appliances. The key feature of Type C extinguishers is that they use non-conductive agents, which means they are safe to use on live electrical equipment without the risk of electrocution or furthering the fire.

Type C extinguishers typically contain dry powder or carbon dioxide, both of which are effective at suppressing electrical fires. In contrast, other types of extinguishers, such as Type A, which is meant for ordinary combustibles like wood and paper, may not be safe to use on electrical fires. Therefore, understanding the proper usage of these types can be critical for safety in environments where electrical hazards are present.