What type of extinguisher should be used for fires involving electrical equipment?

Class C extinguishers are specifically designed for fires involving energized electrical equipment. When dealing with electrical fires, it is critical to use an extinguisher that does not conduct electricity, as this can pose a serious risk of electrocution. Class C extinguishers use non-conductive agents, allowing them to safely extinguish fires without posing a danger to the person using the extinguisher or causing further damage to the electrical equipment.

In contrast, Class A extinguishers are meant for fires involving ordinary combustible materials like wood or paper. Class B extinguishers target fires involving flammable liquids, gases, or greases, which are not relevant to electrical equipment. Class K extinguishers are tailored for kitchen fires involving cooking oils and fats, making them unsuitable for electrical fires as well. Therefore, Class C extinguishers stand out as the appropriate choice for safely tackling fires that involve electrical devices.