In firefighting, which type of fire extinguisher is suitable for electrical fires?

The CO2 extinguisher is specifically designed for electrical fires due to its effective properties that prevent electrical conduction. Carbon dioxide extinguishes fires by displacing oxygen and creating an inert environment that suffocates the flame. Additionally, it does not leave any residue, making it ideal for use on electrical equipment, which could be damaged by other types of extinguishing agents. Using a CO2 extinguisher will not pose a risk of conducting electricity back to the user or causing further damage to electrical components.

In contrast, water extinguishers can be hazardous on electrical fires because water conducts electricity, increasing the risk of electric shock. Foam extinguishers are also inappropriate for electrical fires as they combine water with foam agents, which fall under the same risk of conduction. Powder extinguishers can be used for electrical fires, but they do not provide the same advantages as CO2, particularly the clean-up ease and minimal risk of equipment damage.