The A, B, C rating system defines the kinds of burning materials each fire extinguisher is designed to fight. The number in front of the A, B, or C indicates the rating size of fire the unit can extinguish. To achieve a Class “A” rating, the extinguisher must be capable of putting out the wood crib, wood panel and excelsior (shredded paper …
This is the only appropriate extinguisher to use in kitchen conundrums. Even though class "K" fires are a subset of class "B" fires, they must be treated with extra care and thus warrant a dedicated extinguisher type. The wet chemical extinguisher can discharge for up to forty seconds at a maximum effective range of ten to twenty feet.
What Is an ABC Fire Extinguisher? – SelectSafety.net
The ABC fire extinguishers are multipurpose and use a dry chemical called monoammonium phosphate to put out A, B, and C fires which are described as follows: Class A flames are caused by wood, cloth, or paper. Class B flames are caused by liquids and gases. Class C flames are caused by energized electrical sources.
B: The number in front of the "B" is a relative measure of the area an extinguisher can cover. C & K : These letters indicate that an extinguisher can be used effectively against these fire classes. In practical terms, that means that if Fire Extinguisher 1 has a 4-A:80-B:C rating and Fire Extinguisher 2 has a 1-A:10-B:C rating, Fire …
People Also Ask what is a b c fire extinguisher
What is a Class B fire extinguisher used for?
Fire extinguishers with a Class B rating are effective against flammable liquid fires. These can be fires where cooking liquids, oil, gasoline, kerosene, or paint have become ignited. Two commonly used chemicals are effective in fighting these types of fires.
What is the chemical used in ABC fire extinguishers?
The ABC fire extinguishers are multipurpose and use a dry chemical called monoammonium phosphate to put out A, B, and C fires which are described as follows: Class A flames are caused by wood, cloth, or paper.
How does an ABC fire extinguisher work?
ABC fire extinguishers use a dry chemical powder called monoammonium phosphate to put out the ABC classes of fire. This dry chemical puts out the fire by coating the flames with a thin layer of dust and blocking the flammable oxygen supply to the source. ABC fire extinguisher sizes range from 2 to 10 pounds.
What comes out of a fire extinguisher?
The extinguishing agent comes out of the extinguisher to eliminate fires. It is fed out of the extinguisher’s tank via a pickup tube once an expellant (often from a compressed gas canister) is released into the tank. The expellant is released when the safety pin is removed and the discharge lever is squeezed.
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Foundation Findings #46 ABC versus BC Extinguishers Video Answer
Reference:
https://www.usfa.fema.gov/
https://en.wikipedia.org/wiki/Fire_extinguisher