The size of a fire extinguisher indicates the amount of extinguishing agent it holds and is most often measured in pounds. Sizes can range from as small as …
Class A size rating: The number beside the letter A ranges from 1 to 40. This is the water equivalency for this extinguisher, where 1 equals 1¼ gallons. Therefore, a 2A size rating means the extinguisher can battle as fire as effectively as 2½ gallons of water. Class B size rating: The number beside the letter B ranges from 1 to 640.
Guide to Fire Extinguisher Sizes, Types, & Ratings
Class B ratings tell us the area in square feet that the fire extinguisher can cover, ranging from 1 to 160. 20B would indicate that the fire extinguisher can douse a fire that has spread up to 20 square feet, while a …
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What size fire extinguisher do I need for an automotive shop?
The size of the fire extinguisher required for an automotive shop depends upon the source of the fire. Usually, the fire is started by either of the sources: For a space the size of a home garage where non-vehicle sources start the fire, a 10-pound fire extinguisher is ideal, which will be labeled 4A:60B: C.
What is the difference between 10B and C size fire extinguishers?
Therefore, a 10B size rating means the extinguisher can effectively fight a fire that has spread up to 10 square feet. There is no Class C size rating:The C classification simply means the canister contains a non- conducting extinguishing agent, making it safe to use on electrical fires.
What is the size of a Class C fire extinguisher?
There is no Class C size rating:The C classification simply means the canister contains a non- conducting extinguishing agent, making it safe to use on electrical fires. Therefore, the Class A and Class B size ratings tell you everything you need to know about the firefighting capabilities of an ABC fire extinguisher.
What does 4A mean on a fire extinguisher?
One A is equivalent to 1.25 gallons of water, so a unit with a 4A rating has an equivalent of 5 gallons of water to battle Class A fires. B: The number in front of the "B" is a relative measure of the area an extinguisher can cover.
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Work Shop Fire Extinguisher – Choosing the CORRECT ONE and Size? Video Answer
Reference:
https://www.usfa.fema.gov/
https://en.wikipedia.org/wiki/Fire_extinguisher