Film-forming foam type. AFFF (aqueous film-forming foam) and FFFP (film-forming fluoroprotein) fire extinguishers are rated for use on both Class A and Class B fires. As the name implies, they discharge a foam material rather than a liquid or powder. They are not suitable for use in freezing temperatures.
Class C fire extinguishers are ideal for fires in buildings “electrical equipment that is “on” Because of their nonconductive qualities, monoammonium phosphate and sodium bicarbonate are typically employed to extinguish this sort of fire. The classification of fire extinguishers is based on the type of fire.
What are the 5 Types of Fire Extinguishers? – Vanguard
In the case of electrical fires, also known as energized electrical fires, a class C fire extinguisher is needed to put it out. If this kind of fire occurs the source of electricity must be identified and shut off because the electricity itself will …
People Also Ask what type of fire extinguisher is appropriate for electrical fires
What fire extinguisher do I need for an electrical fire?
For a little electrical fire, what fire extinguisher do I need? Electrical fires should always be put out with a CO2 extinguisher, which works by suffocating the fire with carbon dioxide and shutting off the oxygen supply, which would otherwise feed the fire and spread it.
What are the different types of chemical fire extinguishers?
Types of agents available include sodium bicarbonate base and potassium bicarbonate base. Dry chemical type extinguishers have special treatments that ensure proper flow capabilities by providing resistance to packing and moisture absorption (caking). Fire extinguishers of this type contain an ammonium phosphate base agent.
Are multipurpose fire extinguishers safe for Class A fires?
You can easily see what kind of fires a multipurpose fire extinguisher is safe for by looking at the label. An ABC fire extinguisher, for example, would be safe for use on Class A, Class B, and Class C fires, while an AB fire extinguisher would just be rated for Classes A & B.
How does a Class A fire extinguisher work?
For use on Class A fires, the multipurpose agent has the additional characteristic of softening and sticking when in contact with hot surfaces. In this way, it adheres to burning materials and forms a coating that smothers and isolates the fuel from air.
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TYPES OF FIRE AND FIRE EXTINGUISHERS | WHICH FIRE EXTINGUISHER TO BE USED ON WHICH CLASSES OF FIRE Video Answer
Reference:
https://www.usfa.fema.gov/
https://en.wikipedia.org/wiki/Fire_extinguisher