A fire extinguisher is an active fire protection device used to extinguish or control small fires, often in emergency situations. It is not intended for use on an out-of-control fire, such as one which has reached the ceiling, endangers the user (i.e., no escape route, smoke, explosion hazard, etc.), or
The first fire extinguisher of which there is any record was patented in England in 1723 by Ambrose Godfrey, a celebrated chemist at that time. It consisted of a cask of fire-extinguishing liquid containing a pewter chamber of
Fire Extinguisher: Meaning, Classes, Types, Selection, …
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What is a Class E fire extinguisher?
Class E fire extinguisher: These fire extinguishers are used to extinguish fires that originated from live electrical sources. However, in many countries, this is not recognized as a separate fire class because once the electric power supply is switched off it can be considered as any of the other five classes.
What type of fire extinguisher is used to extinguish a fire?
Unlike powder, foam can be used to progressively extinguish fires without flashback. Aqueous film-forming foam ( AFFF ), used on A and B fires and for vapor suppression. The most common type in portable foam extinguishers.
What is the common powder used in fire extinguishers?
It is one of of the most common extinguishers in wide use as powder extinguishers can be effectively used on Class A, B, C, and E fires. Fine chemicals in powder form as extinguishing agent is released by the powder extinguishers to blanket the fire and suffocate it. The common powder is monoammonium phosphate.
What do the letters mean on a fire extinguisher?
Fire Extinguisher Number Ratings In addition to letter classification, each extinguisher has a number rating. For example, if you look at the UL inspection label, you might see the Classification: 4-A; 80B; C. The letters (A, B, and C) indicate which fires this extinguisher can handle.
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How Fire Extinguishers Work Video Answer
Reference:
https://www.usfa.fema.gov/
https://en.wikipedia.org/wiki/Fire_extinguisher