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

CO2 extinguishers are the most effective for electrical fires because they work by displacing oxygen and removing heat from the fire. When used on an electrical fire, CO2 is non-conductive, making it safe to use on live electrical equipment without the risk of electrocution. It effectively suffocates the fire, as it leaves no residue that could damage sensitive electrical components.

Water-based extinguishers are not suitable for electrical fires, as water conducts electricity and could potentially create a hazardous situation. Foam extinguishers are also ineffective because they are typically designed for flammable liquids and can similarly pose risks when used on electrical fires. Dust extinguishers, while useful for certain types of fires, are not commonly recognized or specifically effective against electrical fires compared to CO2 options. Therefore, utilizing a CO2 extinguisher ensures safety and efficacy in extinguishing electrical fires.