So lets break that down, the “A” means it can be used to extinguish class A normal combustibles like paper wood and cloth. The “2” in front of the A means it is equal to using 2 gallons of water. The “B” means it can be used to put out flammable liquid fires.
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. Class D puts out combustible metal fires (magnesium, titanium, potassium, sodium, etc.)
What does the letter "b" on a b-1 fire extinguisher indicate …
The B indicates the fire extinguisher will put out Flammable liquid fires or burning fluids (such as grease or oil used for cooking). Class A extinguishers are good for paper, wood, textiles and plastics.
B on fire extinguishers generally means that it can be used to put out flammable liquid fires. B1 means it will do so, but not especially well (1 is the lowest ranking).A is for flammable solids …
People Also Ask what does the letter b on a fire extinguisher indicate
What do the letters on a fire extinguisher mean?
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 does the B mean on a fire extinguisher?
The B indicates the fire extinguisher will put out Flammable liquid fires or burning fluids (such as grease or oil used for cooking). Class A extinguishers are good for paper, wood, textiles and plastics.
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 4A 20B C mean on a fire extinguisher?
You might come across a fire extinguisher labeled 4A:20B:C. The numbers indicate the size rating of each extinguishing agent. Here’s how it works: The Class A size rating represents the water equivalency.
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Classification Tip 2.5.1 Video Answer
Reference:
https://www.usfa.fema.gov/
https://en.wikipedia.org/wiki/Fire_extinguisher