What do the A B C ratings mean on Fire Extinguishers? “A” TRASH–WOOD–PAPER. Fire extinguishers with a Class A rating are effective against fires involving paper, wood, textiles, and plastics. The primary chemical used to fight these fires is monoammonium phosphate, because of its ability to smother fires in these types of materials.
There is no size rating for Class C. After all, a Class C electrical fire is nothing more than a Class A or Class B fire with energized components requiring a non-conductive extinguishing medium. To effectively fight Class C fires, choose your extinguishers based on the Class A and Class B size ratings. There is also no size rating for Class D fires.
1A10BC Fire Extinguishers (1A:10B:C)
SPECS Model #: Amerex B369 UL&ULC Rating: 1A:10B:C Capacity (lbs): 9 Shipping Weight (lbs): 16.75 Height: 16.25 in Width: 8.5 in Depth: 5 in Range (Initial) : 12-18 ft Discharge time (seconds): 9 Minimum Space Requirement (Cu. Ft.): 1123 Bracket Option:…
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:C ratings. These numerical ratings allow you to compare the relative extinguishing effectiveness of various fire extinguishers.
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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?
Fire Extinguisher Ratings 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.
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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Fire Extinguisher UL Rating & Placement as per NFPA 10 Part 1 English Video Answer
Reference:
https://www.usfa.fema.gov/
https://en.wikipedia.org/wiki/Fire_extinguisher