What type of fire extinguisher is required for fires involving energized electrical equipment?

The correct choice is the fire extinguisher designated for Class C fires, which is specifically designed for use on fires involving energized electrical equipment. This type of extinguisher typically utilizes non-conductive agents, such as carbon dioxide (CO2) or dry chemical, to extinguish flames without posing a risk of electric shock to the user.

When dealing with energized electrical equipment, it is crucial to select the appropriate extinguisher type to ensure both effective fire suppression and safety. Using the wrong type of extinguisher, such as those intended for Class A (ordinary combustibles), Class B (flammable liquids), or Class D (combustible metals), can result in serious hazards. These extinguishing agents could potentially exacerbate the situation involving electrical fires rather than extinguishing them, or they could pose a risk of electrocution to the person attempting to use them. Thus, understanding the classification of fire extinguisher types is essential for ensuring safety in environments where electrical equipment is present.