The type of fire extinguisher commonly used on a live electrical fire is?

The type of fire extinguisher commonly used on a live electrical fire is the carbon dioxide extinguisher. This choice is appropriate because carbon dioxide is a non-conductive agent that does not leave a residue, making it safe to use on electrical equipment. When carbon dioxide is released from the extinguisher, it displaces the oxygen around the fire, effectively suffocating the flames without the risk of conducting electricity or causing further damage to the electrical systems.

Using water or foam extinguishers on live electrical fires is dangerous, as they can conduct electricity, potentially leading to electrical shocks or further spreading the fire. Dry chemical extinguishers can be effective; however, they may leave a residue that could damage sensitive electronic equipment. Therefore, carbon dioxide extinguishers are the best choice for ensuring safety and effectiveness in the event of a live electrical fire.