This is a standard 5-lb extinguisher appropriate for use in most ordinary commercial settings, but canisters can be much larger than this. Here’s what the label means: 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.
NFPA recommends one 2-A fire extinguisher for square feet. OSHA requires employees to have access to an extinguisher within 75 feet. Employees should have access to a fire extinguisher within either 30 or 50 feet, depending on the hazard in question and the rating of the extinguisher (see below).
How To Size A Fire Extinguisher – Guardian Fire Protection
Portable fire extinguishers are rated for the size of fire they can put out. For Class A fire extinguishers, this number ranges from 1 to 40, and for Class B, the rating is from 1 to 640. You can find this rating on the label.
Depending on the manufacturer of the fire extinguisher, and the type that you need for your property, your size selection will vary. Some portable extinguishers may be offered in as many as five sizes in one material, and only three materials in another. However, although you may want the smallest, most compact extinguisher for whatever reason …
People Also Ask how big a the average portable fire extinguisher
What size fire extinguisher do I Need?
Consider the Size of the Room. For a room of average dimension, a 5-lb fire extinguisher may be sufficient. For larger commercial spaces and warehouses where a fire has more room to spread, a larger 10-lb model may be necessary.
How many gallons is a 2A fire extinguisher?
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.
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 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.
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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