An extinguisher with a 10B rating can cover roughly 10 square feet, an extinguisher with a 20B rating can cover 20 square feet and so on. Fire Extinguisher Ratings. The numerical rating for this class of fire extinguisher refers to the amount of water the fire extinguisher holds and the amount of fire it will extinguish. A fire extinguisher with a 1A rating is equivalent to 1.25 gallons of water. Read on to learn more. The numbers in the UL Rating are a relative measurement of how effective a given extinguisher is at fighting certain classes of fires, based on proper fire extinguisher … Fire extinguisher ratings are designed to indicate the type of fires they should be used on, and to give an indication of how effective they will be. It’s one of those few things that you buy but hope to never use. A Class B fire extinguisher is used for flammable liquid and gas fires such as oil, gasoline, etc. Foam (AFFF) 3 litre Fire Extinguisher UL Rating: What it Means . The Underwriters Laboratory (UL) rates fire extinguishers to be used on certain types of fires. The Underwriters Laboratories (UL) is a renowned third-party testing facility for public safety. This compact and handy 2 litre Foam Fire Extinguisher with LPCB Approval is used for combating class A & B fires (flammable solids and liquids). This is divided into either Class A or Class B:C to indicate the relative extinguishing effectiveness of the extinguisher. • The numerical rating for a Class A Fire extinguisher refers to the amount of chemicals/agent in the extinguisher. It is critical that you have training and have used them to ensure your safety and others around you. A fire extinguisher’s rating consists of 2 parts: a number and a letter. Fire extinguisher training and why it’s critical. For a more detailed explanation, read on…. 34B. So for example, a water additive stored pressure extinguisher coded 13A will extinguish a Class A fire of freely burning combustibles of size 13. Definition - What does Fire Extinguisher mean? A 34A would extinguish a stack with 34 sticks and so on, so the higher the number the bigger the fire it can extinguish. Smoke alarms and fire extinguishers are two essential pieces of fire safety equipment every home should have. This code, for example 13A/55B, defines the Class (or type) of fire and the size of fire this type of fire extinguisher is capable of extinguishing. Always err on the side of caution. Water-based Class A extinguishers may also have additives to make them more effective. A 2A rating equals 2.5 gallons of water and a 4A rating equals 5 gallons of water. 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. Fire extinguishers are classified by fire type. To ensure you buy the right type and size for the application you have in mind, learn more about fire extinguisher classes and size ratings. The A, B, C rating system defines the kinds of burning materials each fire extinguisher is designed to fight. Click to download Fact Sheet. Well it’s definitely not a shoe size, but a specific arrangement of combustibles used to test the extinguisher. 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. Changing the batteries in your fire alarm panel, locating the optimal evacuation route in your building, and ensuring you have the proper fire extinguishers in the most advantageous spots all trickle to the bottom of our never-ending to-do lists. The ratings on fire extinguishers allows users to quickly identify the type of fire which an extinguisher will be most effective for. Fire extinguishers are portable devices used to extinguish small fires or reduce their destruction before firefighters arrive at the scene. 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. Fire Ratings Explained B-rated fire extinguishers are numbered in 10s. This type of fire extinguisher (also called multi-purpose fire extinguisher) is the one that’s recommended for home use. ABC Fire Extinguisher. The 4-A extinguisher holds 4 gallons of water and is, thus, expected to put out twice as much fire as a 2-A extinguisher holding 2 gallons of water. They are for fires that involve combustible metals, such as magnesium, titanium, potassium and sodium. To achieve a Class “A” rating, the extinguisher must be capable of putting out the wood crib, wood panel and excelsior (shredded paper) tests. But deciding on the right fire extinguisher can be confusing. Only two classifications of fire include a number with the rating, Class A and B. Located on the fire extinguisher label is the UL rating (Fire Extinguisher Ratings). ABC Fire Extinguishers: Mono ammonium phosphate, ABC Dry Chemical, ABE Powder, tri-class, or multi-purpose dry chemical is a dry chemical extinguisher used on class A, B and C fires. These can be fires where cooking liquids, oil, gasoline, kerosene, or paint have become ignited. In the UK, all quality fire extinguishers capable of extinguishing class A and B fires should carry a fire rating. Under NFPA10 all commercial vehicles must carry at least one fire extinguisher, with size/UL rating depending on type of vehicle and cargo (i.e., fuel tankers usually must have a 20 lb (9.1 kg), while most others can carry a 5 lb (2.3 kg)). 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