The most commonly used extinguishers by their ratings and weight. 2-A:10B:C – 4 lb. 3-A:40B:C – 5 lb. 4-A:60B:C – 10 lb. 10-A:80B:C – 20 lb. No number accompanies a fire extinguisher’s Class C rating. The C on the label indicates only that the extinguisher is safe to use on electrical fires. Fire Extinguishers for Class D fires must …
Carbon Dioxide (Co2) Fire Extinguishers are used for class B flammable liquids fires as well as Class C Electrical fires as they are electrically non-conductive. Carbon Dioxide is a clean, non-contaminating, odorless gas. Class B: Flammable Liquids-Gasoline, oil, grease, acetone (includes flammable gases). Class C: Electrical Fires, Energized …
Guide to Fire Extinguisher Sizes, Types, & Ratings
Fire Extinguisher Sizes. The size of a fire extinguisher indicates the amount of extinguishing agent it holds and is most often measured in pounds. Sizes can range from as small as 2.5 lb. to as large as 350 lb. While the largest extinguishers will come with built-in wheels to make transportation manageable, size is always important to consider.
The number beside the letter A ranges from 1 to 40. This is the water equivalency for this extinguisher, where 1 equals 1¼ gallons. For example, 4A means the fire extinguisher is as effective as 5 gallons of water. The numbers before B and C are a measure of the amount of square feet the fire extinguisher can put out.
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How to choose the right fire extinguisher?
How to Choose the Right Fire Extinguisher 1 What type of hazards are you dealing with?#N#The types of fire hazards in your home or business will help determine… 2 What is the UL rating?#N#Also located on the fire extinguisher label is the UL rating. All Fire Extinguishers are… 3 What size do you need? More …
What does 4A mean on a fire extinguisher?
One A is equivalent to 1.25 gallons of water, so a unit with a 4A rating has an equivalent of 5 gallons of water to battle Class A fires. B: The number in front of the "B" is a relative measure of the area an extinguisher can cover.
What are the different types of fire extinguishers?
Although people generally look for a class A fire extinguisher, class B fire extinguisher, or class C fire extinguisher, you only need one type to fight these three fire classes. Filled with a dry chemical agent called mono ammonium phosphate, Type ABC fire extinguishers can fight class A, B, and C fires.
What size extinguisher do I need for a Class B fire?
Halon Extinguishers size 1.25 lb, 2.5 lb, 3 lb and 5 lb have a BC rating, and can be used on class b and c Fires. (Amerex Models A344T, C352TS, C354TS, and B355T)
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Which Fire Extinguisher Is Best? Video Answer
Reference:
https://www.usfa.fema.gov/
https://en.wikipedia.org/wiki/Fire_extinguisher