Extinguishers are classified by a number and letter symbol. The number indicates the relative size of the extinguisher, and the letter indicates the type of fire it will extinguish. … On Type B extinguishers, the number tells you the square footage of the fire the extinguisher can put out.
What does the letter and number indicate on a fire extinguisher?
The letters indicate the type material the extinguisher can be used on; A for combustible solids (paper, wood and trash), B for combustible liquids (gasoline, oil, acetone) and C for electrical equipment. The number before the A indicates the size of a wood panel that can be extinguished,.
The rating number that indicates the extinguishing capability, information on how much dry chemical should be in the fire extinguisher, and the suitable temperatures in which the agent will operate are on the label, as shown in the Photos 2, 2a, and 2b below.
What does 3a 40 BC mean?
This 3-A:40-B:C rated fire extinguisher is suitable for light manufacturing, dining area, auto showroom, parking garage and storage areas. Multipurpose Dry Chemical. ULC-rated 3-A:40-B:C. Supplied with wall hook. Suitable for use on fires common to the home and office.
What type of fire does 5 B put out?
The letters indicate the types of fires the extinguisher will put out. Class A fires are of combustible solids like wood. Class B fires are of flammable liquids like gasoline or oil. Class C fires are electrical fires.
What does 4A 80B C mean?
Tall Buckeye ABC Dry Chemical Extinguisher 4A:80B:C is designed for use on Class A fires (ordinary combustibles), Class B fires (flammable liquids and gases), and Class C fires (energized electrical equipment). … A wall bracket is included with each extinguisher.
What does 2A mean on a fire extinguisher?
Fire Extinguisher Size Ratings
The Class A size rating represents the water equivalency. Each number represents 1 ¼ gallons of water. For instance, 2A means the extinguisher is just as effective as 2 ½ gallons of water. 4A is equivalent to 5 gallons of water.
What does 21A mean on a fire extinguisher?
A class 13A extinguisher will be able to extinguish a 0.5m x 0.56m x 1.3m wooden stack. You guessed it (or maybe you didn’t) a class 21A extinguisher will need to prove itself on a stack measuring 0.5m x 0.56m x 2.1m.
You can tell when a fire extinguisher expires by looking at the year and month punched on the tag. The extinguisher expires one year after the date indicated on the tag. The expiration date can be found at the bottom of the fire extinguisher tag.
What does 5 BC mean on a fire extinguisher?
Fire Away Class 5 BC Fire Extinguisher
Extinguisher is suitable for use on Class B (liquids and gases) and Class C fires (energized electrical equipment). Seamless aluminum cylinders have no welds so they won’t leak. Status updates fitted with a pressure gauge that provides at-a-glance .
What does ABC mean on fire extinguisher?
Dry Chemical Extinguishers come in a variety of types. You may see them labeled: • “DC” short for “dry chem” • “ABC” indicating that they are designed to extinguish class A,B,and C fires, or • “BC” indicating that they are designed to extinguish class B and C fires.
What is a Type B 1 fire extinguisher?
B-1 Extinguishers are USCG approved and meet the need for a Type B, Size 1 USCG approved Fire Extinguisher. Amerex B-I Fire Extinguishers must be: Dry Chemical, ABC, or Purple K: 2 lbs or larger. Carbon Dioxide (Co2): 5 lbs or larger. Halon: 2.5 lbs or larger.
How do you determine fire extinguisher rating?
Ratings are based on the size of the material that can be repeatedly extinguished. To achieve a class “B” rating, the extinguisher must repeatedly put out a flaming liquid fire. Ratings are based on the size of the fire.
What extinguisher is Class C?
Class C. Class C fires involve energized electrical equipment. Extinguishers with a C rating are designed for use with fires involving energized electrical equipment.
What is K class fire extinguisher?
Class K fire extinguishers are more effective in extinguishing cooking fires. … NFPA revised this standard in 1998, specifying that “Fire extinguishers provided for the protection of cooking appliances that use combustible cooking media (vegetable or animal oils and fats) shall be listed and labeled for Class K fires.”
What is D class fire?
Class D fires involve combustible metals – especially alkali metals like lithium and potassium, alkaline earth metals such as magnesium, and group 4 elements such as titanium and zirconium. … Therefore, even a small metal fire can spread and become a larger fire in the surrounding ordinary combustible materials.