Fire Extinguisher Ratings Fire extinguishers are classified by fire type. Fire Ratings Explained Most fire extinguishers have a fire Rating printed on the canister.
The number in front of the A B or C indicates the rating size of fire the unit can extinguish.
What does the fire extinguisher rating mean. Multiply the number in front of A by 125 to. Class A extinguishers are for ordinary combustible materials such as paper wood cardboard and most plastics. 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.
A higher number means the extinguisher can battle a bigger blaze. Fire Extinguisher UL Rating. Located on the fire extinguisher label is the UL rating Fire Extinguisher Ratings.
The number in front of. Wood paper cloth plastics trash. Class A puts out ordinary combustible fires wood paper plastic etc Class B puts out flammable liquid fires oil gas petroleum etc Class C puts out electrical fires.
There are 9 ratings for Class B fire extinguishers – 21B through to 233B. Type A extinguishers put out ordinary fires of combustible material such as cloth or wood. For class A fires the number corresponds to its effectiveness relative to 1 ¼ gallons of water.
A 2A rating equals 25 gallons of water and a 4A rating equals 5 gallons of water. 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 training. Only two classifications of fire include a number with the rating Class A and B.
The rating number refers to the size of fire that can be extinguished under test conditions. The letter on a fire extinguisher indicates its classification. In most cases the rating is a combination of numbers and letters.
This number has a different meaning for each class. In another article we discussed the different typesclasses of fires the typical fuel source common settings in which a certain class of fire is likely to occur and the most effective type of fire extinguisher to combat the different classes of fires. The numbers you might see accompanying the letter class of a fire extinguisher refer to the extinguishers size rating for class A and B fires.
Fire extinguishers are classified by fire type. Letter Ratings Letter ratings on fire extinguishers describe what type of fire they can extinguish. A fire extinguisher with a 1A rating is equivalent to 125 gallons of water.
All fire extinguishers have ratings stamped on the faceplate of the appliance. For an A rating the number is an indication of water equivalency with each A being the same as 1 14 gallons of. Other classes dont have such a rating.
This code for example 13A55B defines the Class or type of fire and the size of fire this type of fire extinguisher is capable of extinguishing. A- and B- rated fire extinguishers also use numbers to show how large a fire they can fight. 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 numbers indicate how much of the fire can be put out by the fire extinguisherEvery number before the A means it is as effective as 1 ¼ gallons of water. Each fire extinguisher also has a numerical rating that serves as a guide for the amount of fire the extinguisher can handle. The higher the rating the increased size of fire the extinguisher can extinguish in test conditions.
Know that the rating that a Class A extinguisher displays refers to the amount of water that the extinguisher holds and thus the size of fire it is able to put out. The A B C rating system defines the kinds of burning materials each fire extinguisher is designed to fight. A pictogram of a campfire next to the letter A is often printed on the units.
The A B C rating system defines the kinds of burning materials each fire extinguisher is designed to fight. What it Means. As part of a fire extinguishers classification the numbers on the label can mean either.
How much water would be required to match the agents power against Class A fires The square footage of Class B fires the agent can extinguish For each A the extinguisher contains the equivalent of 125 gallons of water. The number represents the chemicalagents equivalent to gallons of water the extinguisher holds. The number in front of the A B or C indicates the rating size of fire the unit can extinguish.
Every fire extinguisher has an alphanumeric rating that tells you what types of fires it can extinguish as well as the size of fire it can put out. The numerical rating for a Class A Fire extinguisher refers to the amount of chemicalsagent in the extinguisher. Class B fires involve flammable or combustible liquids such as gasoline kerosene grease and oil.
But what do these fire extinguisher ratings mean.