The numbers indicate the size rating of each extinguishing agent. 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.
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. Located on the fire extinguisher label is the UL rating (Fire Extinguisher Ratings). The UL rating is broken down into Class A and Class B …
What Do the Numbers Mean On a Fire Extinguisher?
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 …
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What do the ratings on a fire extinguisher mean?
Located on the fire extinguisher label is the UL rating (Fire Extinguisher Ratings). The UL rating is broken down into Class A and Class B:C ratings. These numerical ratings allow you to compare the relative extinguishing effectiveness of various fire extinguishers.
What is a 20B C fire extinguisher rating?
– The B:C rating is equivalent to the amount of square footage that the extinguisher can cover, handled by a professional. 20B:C = 20 square feet of coverage. – C indicates it is suitable for use on electrically energized equipment. When analyzing these ratings, note there is not a numerical rating for Class C or Class D fires.
What do the numbers on a fire extinguisher mean?
For B fires, which are more likely to spread (since they have liquid components), the number indicates how much square footage the extinguisher can cover. In this example, the 80 indicates 80-square feet if the user sweeps the extinguisher side-to-side.
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.
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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