Which type of fire extinguisher is safe for high voltage electrical equipment?

The dry powder fire extinguisher is designed specifically for use on flammable solid materials, flammable liquids, and gases, but it is also effective on electrical fires, including those involving high voltage equipment. One of the key characteristics of dry powder extinguishers is that they do not conduct electricity, which makes them a safe choice for extinguishing fires in electrical systems where high voltage is present.

In contrast, water-based extinguishers can conduct electricity and pose a risk of electric shock, while foam extinguishers are also unsuitable for electrical fires due to their conductivity. Wet chemical extinguishers are primarily intended for cooking oils and fats and also do not guarantee safety on electrical fires. Therefore, the dry powder extinguisher stands out as a versatile option that is safe for high voltage electrical equipment, making it the most appropriate choice in this scenario.