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• Wednesday, January 20th, 2021

By the way, there is no such thing as a Class E rating in the UK – often thought to cover Electrical fires. Thus, a 4A will equal about five 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. A 34A would extinguish a stack with 34 sticks and so on, so the higher the number the bigger the fire it can extinguish. The letter part of the rating denotes what class of blaze this fire extinguisher is suitable for. Need to speak to someone?Simply call 01724 281044/277479. 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. 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. 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. Fire extinguishers are usually fitted in buildings at an easily accessible location, such as against a wall in a high-traffic area. The UL rating is broken down into Class A and Class B:C ratings. Fire Ratings Explained Many fires are caused by electrical faults which in consequence ignite other flammables. In practice you should estimate the volume of combustibles at risk against this benchmark and select the most applicable size for the job. When it’s time to purchase fire extinguishers for your business, you may be confused by the different letters and numbers on the label. Fire extinguishers come with different ratings dependent on the classification of fire they’re equipped for. The Underwriters Laboratory (UL) rates fire extinguishers to be used on certain types of fires. There are 9 ratings for Class B fire extinguishers - 21B through to 233B. Browse our full range of fire extinguishers here. Foam (AFFF) 3 litre 3 litre Water Additive Fire Extinguisher provides environmentally friendly and non-corrosive method of tackling Class A fires. Water-based Class A extinguishers may also have additives to make them more effective. 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. 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. Located on the fire extinguisher label is the UL rating (Fire Extinguisher Ratings). Thus in our 13A/55B example this extinguisher will combat a Class A fire (typically freely burning materials like wood, cloth and coal) of Size 13 or a Class B fire (flammable liquid) of size 55. This type of fire extinguisher (also called multi-purpose fire extinguisher) is the one that’s recommended for home use. 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. The number in front of the A, B, or C indicates the rating size of fire the unit can extinguish. The A, B, C rating system defines the kinds of burning materials each fire extinguisher is designed to fight. (See Extinguisher Chart). The rechargeable fire extinguisher contains 4 pounds of multipurpose mono-ammonium phosphate dry chemical extinguishing agent. FAQ Which extinguisher type is suitable for what fire? Fire extinguishers are classified by fire type. A 2A rating equals 2.5 gallons of water and a 4A rating equals 5 gallons of water. 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. © 2021 Fire and Safety Centre, all rights reserved. This compact and handy 2 litre Foam Fire Extinguisher with LPCB Approval is used for combating class A & B fires (flammable solids and liquids). Only two classifications of fire include a number with the rating, Class A and B. Examples of available 13A rated extinguishers in our range, Water with Additive 3 litre 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 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. What the devil is size 13 you may ask? It is critical that you have training and have used them to ensure your safety and others around you. The operating pressure is 100 psi. 34B. Two commonly used chemicals are effective in fighting these types of fires. Well it’s definitely not a shoe size, but a specific arrangement of combustibles used to test the extinguisher. The fire rating of the particular extinguisher is indicated by a number and letter, e.g. Smoke alarms and fire extinguishers are two essential pieces of fire safety equipment every home should have. A fire extinguisher’s rating consists of 2 parts: a number and a letter. 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. The number represents the chemical/agent's equivalent to gallons of water the extinguisher holds. These are kept handy at places, namely fire points, in buildings, factories, public paces or transportation. Fire Extinguisher Ratings. This number has a different meaning for each class. Having decided a 13A rating is appropriate you can then compare Ratings on the different types of extinguishing agents and available sizes to decide the most appropriate for your application. 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 Extinguisher Buyer’s Guide. Fire Extinguisher Ratings. • The numerical rating for a Class A Fire extinguisher refers to the amount of chemicals/agent in the extinguisher. To see what each fire extinguisher looks like, see our guide to types of fire extinguisher, a BS (BSI) Kitemark, indicating BAFE (British Approval for Fire Equipment) approval. It is rated for class A, B, and C fires. They are also often fitted to motor vehicles, watercraft, and aircraft - this is required by law in many jurisdictions, for identified classes of vehicles.

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