Fire extinguishers are sold with class ratings: class A, Class B, and Class C, determined by the contents. Each class is identified with a symbol and pictogram representing the type of fire it will put out. Class A Rating: Class A fire extinguishers are meant to be used against fires involving paper, wood, plastic, cloth and other ordinary combustible materials.
Fire Extinguisher Ratings. Fire extinguishers are classified by fire type. The A, B, C rating system defines the kinds of burning materials …
Fire Extinguisher Types | NFPA
Fire Extinguisher Types. Water. Water is the primary liquid used in these extinguishers, although sometimes other additives are also included. A drawback for pure water fire … Film-forming foam type. AFFF (aqueous film-forming foam) and FFFP (film-forming fluoroprotein) fire extinguishers are …
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What do the B C ratings mean on fire extinguishers?
Thus, a 4A will equal about five gallons of water. The numbers on a B or C rating will indicate the square footage that extinguisher can handle. The letter indicates the type of fire that the fire extinguisher can be used on. For example, a rating of 2B means that the fire extinguisher can be used to combat two square feet of a Class B fire.
What is the best fire extinguisher?
Foam extinguishers: The label colouring for this type of extinguisher is cream.Water extinguishers: The label colour for this type of fire extinguisher is bright red.Dry powder extinguishers: The label colouring for this type of fire extinguisher is blue.Wet chemical extinguishers: The label colour for this type of fire extinguisher is yellow.
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What do the ratings on a fire extinguisher mean?
what is rating of fire extinguisher? The fire rating of the particular extinguisher is indicated by a number and letter, e.g. 34B. The number indicates the size of fire it can extinguish. The size of the fires indicated are for fires put out under test conditions and the larger the number, the larger the fire it can extinguish.
What are the classifications of fire extinguishers?
Class A. Extinguishers rated for class A fires are acceptable for dealing with ordinary combustibles, including wood, paper, textiles, and some plastics. …Class B. Extinguishers marked with a square containing the letter B are acceptable to use with flammable liquid and gas fires, including oil and gasoline. …Class C. …Class D. …Class K. …
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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