Define the ratings in a portable fire extinguisher rating system. Learning Objective 3. 7 – 2Slide3 Fire extinguishers are rated according to performance capability. 7 – 3 (Cont.)Slide4 Fire extinguishers are rated according to performance capability. 7 – 4Slide5 Fire extinguishers rated for multiple classes of fire are identified by a combination of letters. 7 –
How are the ratings used for portable fire extinguishers determined? They are determined by performance capability. Class B rated from 1-B to 640-B – rating based oin approximate square footage area of a flammable liquid of fire. How are fire extinguishers classified? Fire extinguishers are classified by fire type. The A, B, C rating system defines the kinds of …
Understanding Portable Fire Extinguishers – Use and …
Many fire extinguishers are labeled with a combination of the above ratings. For example, “A,B & C” fire extinguishers could be used on any three types of …
Fire Extinguisher Classes. All fire extinguishers receive a rating from the Underwriters Laboratory (UL). The lab tests each extinguisher for safety and labels them according to their ideal use. Each extinguisher will have a …
People Also Ask how are the ratings used for portable fire extinguishers determined
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 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.
Which fire extinguisher is best?
Fire class Fire extinguishers are sorted by “fire class,” which is designated by letters A, B, and C. Typically, the best option for household use is an ABC extinguisher that can combat all types of fire, but if you are looking for a product to put in a specific location, such as the kitchen or garage, you might want one that is …
What is the difference between 5BC and 10BC fire extinguisher?
What is the difference between 5BC and 10BC fire extinguisher? In our tests, the 10BC units discharged only a fraction of a second longer than the 5BC, hardly “twice” anything. The 10BC, on average, discharged only 25% more fire suppressant than the 5BC. What is the best size fire extinguisher for home use?
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Free OSHA Training Tutorial – Portable Fire Extinguishers – Understanding Their Use and Limitations Video Answer
Reference:
https://www.usfa.fema.gov/
https://en.wikipedia.org/wiki/Fire_extinguisher