Which fire extinguishing substance is primarily used for electrical fires?

The use of carbon dioxide as the fire extinguishing substance for electrical fires is based on its properties and effectiveness. Carbon dioxide works by displacing oxygen, which is needed for combustion. When applied to an electrical fire, it can effectively smother the flames without leaving any residue that could potentially damage sensitive electrical equipment.

In contrast, water is a conductor of electricity and can pose a significant danger when used on electrical fires, as it increases the risk of electrocution. Powdered foam and alcohol-based foam also contain components that might not be suitable for electrical fires, as they can leave residues or create additional hazards.

The non-conductive nature of carbon dioxide makes it the preferred choice for extinguishing electrical fires, ensuring both safety and effectiveness in handling such situations.