Which type of fire extinguisher is most effective for electrical fires?

The most effective type of fire extinguisher for electrical fires is the carbon dioxide extinguisher. Carbon dioxide extinguishers work by displacing oxygen and cooling the fire, which is critical in the case of electrical fires since they involve energized equipment. Using a carbon dioxide extinguisher does not leave any residue, making it safe for use on electrical equipment, which can be sensitive to liquids or other agents that may cause damage.

Water-based extinguishers are not suitable for electrical fires because water is a conductor of electricity and can create a risk of electric shock to the person using the extinguisher. Chemical foam extinguishers, while effective for flammable liquid fires, are not the best choice for electrical fires due to the possibility of grounding the electrical equipment and causing further danger. D-P class extinguishers are specifically designed for metal fires, which do not involve electrical components. Therefore, carbon dioxide extinguishers are the preferred choice for safely and effectively addressing electrical fire situations.