Class B fire: Liquids that burn. Gasoline, cooking oil. Class C fire: energized electrical. The number of a rated fire extinguisher represents the amount of square footage of fire the extinguisher is capable of extinguishing. 5BC means the extinguisher is capable of extinguishing 5 square feet of a class B or class C fire.
Fire Extinguisher Classes. The letter on a fire extinguisher indicates its classification: Class A puts out ordinary combustible fires (wood, paper, plastic, etc.) Class B puts out flammable liquid fires (oil, gas, petroleum, etc.) Class C puts out electrical fires.
What do the A B C ratings mean on Fire Extinguishers?
Fire extinguishers are classified by fire type. 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 …
There are four classes of fire extinguishers – A, B, C and D – and each class can put out a different type of fire. Class A extinguishers will put out fires in ordinary combustibles such as wood and paper. Class B extinguishers are for use on flammable liquids like grease, gasoline and oil.
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What does class a mean on a fire extinguisher?
Here’s how it works: The Class A size rating represents the water equivalency. Each number represents 1 ¼ gallons of water. For instance, 2A means the extinguisher is just as effective as 2 ½ gallons of water. 4A is equivalent to 5 gallons of water.
What does BC mean on a fire extinguisher?
The numbers before B and C are a measure of the amount of square feet the fire extinguisher can put out. For example, a 10:BC fire extinguisher can extinguish a fire over 10 sq ft. Beside above, what is the A rating on a fire extinguisher?
What chemicals are used in a Class B fire extinguisher?
The primary chemical used to fight these fires is monoammonium phosphate, because of its ability to smother fires in these types of materials. 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.
What is a Class A Class B fire?
Fires are classified into 5 groups: CLASS A: Class A fires involve common combustibles such as wood, paper, cloth, rubber, trash and plastics. CLASS B: Class B fires involve flammable liquids’ gases, solvents, oil, gasoline, paint, lacquers, tars and other synthetic or oil-based products.
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What Does It Mean on Fire Extinguisher "ABC","BC" || Class of Fire || Class ABC Fire | Class BC Fire Video Answer
Reference:
https://www.usfa.fema.gov/
https://en.wikipedia.org/wiki/Fire_extinguisher