Best answer: When would you use a CO2 fire extinguisher?

CO2 fire extinguishers are mainly aimed at electrical fires but are also suitable for Class B liquid fires and are used in different ways depending on the type of fire they are being used on. Do not use CO2 extinguishers in small rooms as CO2 gas is poisonous at only 4% concentration and can kill at just 8%.

When should you not use a CO2 fire extinguisher?

Dangers: CO2 extinguishers should not be used on fires involving solid materials, such as paper, wood and fabric, and also are not suitable for use on flammable gases. How it works: The CO2 works by cutting off the fire’s oxygen supply. This then smothers it and, as it does so, extinguishes the flames.

Can you use fire extinguisher on electrical fire?

Fire extinguishers with a Class C rating are suitable for fires in “live” electrical equipment. Both monoammonium phosphate and sodium bicarbonate are commonly used to fight this type of fire because of their nonconductive properties.

How should CO2 be applied to a fire?

CO2 displaces the oxygen to extinguish the fire.

When the CO2 gas is released from the extinguisher it looks like dry ice. This “cloud” of CO2 reduces the oxygen in the air around the fire and smothers it.

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Tame a raging fire