The LPCB approval on this AFFF fire extinguisher boasts high fire ratings. What the devil is size 13 you may ask? In most cases, the rating is a combination of numbers and letters. Smoke alarms and fire extinguishers are two essential pieces of fire safety equipment every home should have. Fire Extinguisher UL Rating: What it Means . It’s one of those few things that you buy but hope to never use. The rating of fire extinguishers is designed to help us understand the type and size of the fire in which the extinguisher should be used. A 2A rating equals 2.5 gallons of water and a 4A rating equals 5 gallons of water. The rating number refers to the size of fire that can be extinguished under test conditions. Fire Extinguisher Servicing. Multiply the number in front of A by 1.25 to figure out the equivalent to gallons of water. They are also often fitted to motor vehicles, watercraft, and aircraft - this is required by law in many jurisdictions, for identified classes of vehicles. Each fire extinguisher rating in expressed as a series of numbers and letters which indicate the classes of fire they can be used on the size of fire they are suitable for. Fire extinguishers in your house, garage, car and camper help you put out small fires quickly before they spread. The rating of a fire extinguisher is designed to help users understand the class and size of a fire in which the extinguisher is meant to be used. It is vital that you use the correct fire extinguisher for the fire as using the wrong type of fire extinguisher could be life threatening. The rating on the extinguisher tells all the relative quantity of water which can extinguish the size fire that this particular extinguisher is capable of. To achieve a Class “A” rating, the extinguisher must be capable of putting out the wood crib, wood panel and excelsior (shredded paper) tests. Fire extinguishers are usually fitted in buildings at an easily accessible location, such as against a wall in a high-traffic area. For an A rating, the number is an indication of water equivalency, with each A being the same as 1 1/4 gallons of water. The prefix 55 again defines the size of fire and in this case is easier to visualise as in this case the test uses 55 litres of burning fuel. The A, B, C rating system defines the kinds of burning materials each fire extinguisher is designed to fight. A UL rating ensures that an extinguisher design has been subjected to standardized, uniform tests and has met minimum performance requirements covering such things as discharge time and discharge range. A 175B rating uses 175 litres and so on. The discharge time is 13 to 15 seconds and it has a discharge range of 10-15 feet. Log in, Every fire extinguisher is colour-coded for easy reference, The extinguisher’s fire rating is shown both as a letter (such as A or B) and also as a pictogram. These mystical codes that are printed on all quality-approved fire extinguishers are there to indicate, not just the type of fire that particular extinguisher can combat, but also the size of the fire the contents can effectively put out. Different tests apply to each Class of fire (from A,B,C, D & F) but the rule is the larger the number before the Code letter the bigger the fire (of that Class) that can be extinguished. In any event, a sensible approach is to cut off the power supply to any area where a fire occurs. Fire extinguishers are portable devices used to extinguish small fires or reduce their destruction before firefighters arrive at the scene. FAQ Which extinguisher type is suitable for what fire? Fire extinguishers with a Class B rating are effective against flammable liquid fires. Fire extinguishers are classified by fire type. Well it’s definitely not a shoe size, but a specific arrangement of combustibles used to test the extinguisher. The number represents the chemical/agent's equivalent to gallons of water the extinguisher holds. Class A rating fire extinguishers are often water-based, and are highly effective in extinguishing burning materials found or stored in an office or warehouse, for example. 34B. This compact and handy 2 litre Foam Fire Extinguisher with LPCB Approval is used for combating class A & B fires (flammable solids and liquids). If you’re not sure what type of fire extinguisher to use for each class of fire, take a look at our blog that explains this in detail. B-rated fire extinguishers are numbered in 10s. In addition, the fire extinguisher will also bear a pictogram if it is suitable for use on electrical equipment fires, The precise fire rating for Class A and B fires is expressed as a number and letter combination, such as 34B, There are clear operating instructions on how to use each types of extinguisher. You find Class A extinguishers with ratings such as 1-A, 2-A, 3-A, 4-A, 6-A, 10-A, 20-A, 30-A and 40-A. The first time you use a fire extinguisher shouldn’t be during emergencies. A quick review: Class A: Wood, paper, cloth, plastics, trash The number before the letter A such as 13A indicates the length of a wooden crib test fire (1.3 metres in this case) successfully extinguished under rigorous test conditions. Fire Extinguisher Ratings. The UL rating is broken down into Class A and Class B:C ratings. Fire extinguisher training and why it’s critical. Always err on the side of caution. The number 13 comes from the number of sticks in each row as the example below. If you need a 13A rating, anything higher such as 21A will even better. The revised NFP… The A, B, C rating system defines the kinds of burning materials each fire extinguisher is designed to fight.
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