4. Water Mist Fire Extinguisher: This extinguisher works on most fire classes by releasing tiny water molecules to suffocate the fire and cool temperatures. The water in this fire is safe to use on electrical fires. 5. Foam …
The numerical rating for a class B fire extinguisher refers to the number of cubic feet that the Fire Extinguisher will be able to extinguish. • Example: A Fire Extinguisher with a rating of 1A:10B:C would contain agents equal to 1.25 gallons of water (1 x 1.25) and would be able to extinguish 10 square feet of a class B fire.
Understanding Fire Extinguisher Ratings – HSEWatch
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 …
The larger the number before the fire type letter, the larger the fire that extinguisher can tackle. Each fire class rating is measured differently. Class A fire ratings are calculated by how many stacks of burning material …
People Also Ask what is rating on fire extinguisher
What is the meaning of the ratings for fire extinguishers?
Class A extinguishes fires on typical combustibles like wood, plastic, or paperClass B extinguishes flammable liquids like gas and oilClass C extinguishes electrical firesClass D extinguishes fire involving metalClass K extinguishes typical kitchen fires involving oil and grease
What is the best brand of fire extinguisher?
Like with smoke detectors, it’s important to buy a kitchen fire extinguisher that has an ETL or UL rating. Luckily most of the products from major home safety brands like Amerex, Kidde, and First Alert are all ETL- or UL-certified. You’ll also want to find one with an easy-to-read pressure gauge.
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.
How do I choose the right fire extinguisher?
Which fire extinguisher types to useClass A fires – water, water mist, foam, dry powder, wet chemicalClass B – water mist, foam, dry powder, CO2, some wet chemicalClass C – water mist, dry powderClass D – specialist dry powderElectrical – water mist, foam, CO2Class F – water mist, wet chemical.
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Fire Extinguisher Ratings Video Answer
Reference:
https://www.usfa.fema.gov/
https://en.wikipedia.org/wiki/Fire_extinguisher