Monoammonium phosphate effectively smothers the fire, while sodium bicarbonate induces a chemical reaction which extinguishes the fire. Fire extinguishers with a Class C rating are suitable for fires in “live” electrical equipment.
Which two types of extinguishers could be used on an electrical fire?
Carbon Dioxide (CO2) Extinguishers
CO2 extinguishers are mainly used for electrical fire risks and are usually the main fire extinguisher type provided in computer server rooms. They also put out Class B fires.
What types of fire extinguishers can be used on an electrical fire and why?
CO2 – Suitable for Class B and Electrical Fires
Smothers fire quickly in draught-free conditions. A non-conductor, so can be used on live electrical equipment. Leaves no residue and is not as damaging to electrical equipment as powder. It’s an asphyxiate, so care should be exercised when using in confined spaces.
Which two types of fire extinguishers should you never use on an electrical fire?
Water fire extinguishers have a class A rating and are safe for use on wood, paper and fabric fires. Water fire extinguishers are NOT suitable for electrical fires as water is a conductor and you are at risk of electrocution if used on this type of fire.
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. Fire extinguishers are classified by fire type.
What do you use on electrical fire?
CORRECT WAYS TO PUT OUT AN ELECTRICAL FIRE
- Use a fire extinguisher. You should use a multipurpose fire extinguisher with C in its label. …
- Use baking soda. Is there anything baking soda can’t fix? …
- Use a heavy blanket. Without oxygen, the fire can’t burn.
What are the 4 types of fire extinguishers?
There are four classes of fire extinguishers – A, B, C and D – and each class can put out a different type of fire. Multipurpose extinguishers can be used on different types of fires and will be labeled with more than one class, like A-B, B-C or A-B-C.
Which should you never use to put out an electrical fire?
Don’t use water to put it out.
Water is a natural conductor of electricity and if you throw water on an electrical fire, you can get shocked or electrocuted. Also, water may enable to fire to spread by conducting electricity throughout the room and potentially igniting flammable materials.
What are foam fire extinguishers used for?
What is a foam fire extinguisher used for. AFFF (Aqueous Film Forming Foams) Foam Fire Extinguishers are suitable to fight burning solids such as wood as well as liquid fires such as burning petrol. The foam has the ability to creep over the burning liquid or to soak into burning materials such as settees.
What are the 3 methods of extinguishing a fire?
All fires can be extinguished by cooling, smothering, starving or by interrupting the combustion process to extinguish the fire. One of the most common methods of extinguishing a fire is by cooling with water.
What are the 5 classes of fire extinguishers?
5 Types of Fire Extinguishers
- Class A Fire Extinguishers. Class A fire extinguishers are safe for use on ordinary combustible fires, like those fueled by paper or wood. …
- Class B Fire Extinguishers. …
- Class C Fire Extinguishers. …
- Class D Fire Extinguishers. …
- Class K Fire Extinguishers.