Readers ask: What Does The Number On A Fire Extinguisher Mean?

How do you read a fire extinguisher number?

Each whole number increase in the rating increases the panel dimensions by 2 feet. The number before the B indicates the area of the liquid spill, which is burning, that the extinguisher can extinguish. A 1B rating would extinguish a 2.5 square foot liquid fire and a 2B would extinguish a 5 square foot liquid fire.

What is fire rating in fire extinguisher?

Fire extinguishers carry classification ratings in accordance with the type of fires they have been designed to extinguish. The ratings are A, B, C, D and K. The ratings on fire extinguishers allows users to quickly identify the type of fire which an extinguisher will be most effective for.

What does ABC mean in 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.

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What is the difference between 5BC and 10BC fire extinguisher?

In our tests, the 10BC units discharged only a fraction of a second longer than the 5BC, hardly “twice” anything. The 10BC, on average, discharged only 25% more fire suppressant than the 5BC.

What is the Colour code for fire extinguishers?

Fire extinguisher colour coding Water fire extinguishers are colour coded red. Foam fire extinguishers are colour coded in cream. Powder fire extinguishers are colour coded with blue. Carbon dioxide fire extinguishers are colour coded with black.

What are the 4 fire extinguishers?

When it comes to the types of fire extinguishers, there are five main types including wet chemical, CO2, dry powder, foam and water.

What are the six classes of fire?

Fires are classified in six groups A, B, C, D, F and electrical:

  • Class A fires – are fires involving organic solids like paper, wood, etc.
  • Class B fires – are fires involving flammable liquids.
  • Class C fires – are fires involving flammable gasses.
  • Class D fires – are fires involving burning metals (eg aluminium swarf)

What happens if you use the wrong fire extinguisher?

The dangers of using the incorrect fire extinguisher: Many of these types of metal burn better in carbon dioxide than in air, so applying a carbon dioxide fire extinguisher could make the fire worse. Applying water to a metal fire could cause hydrogen to be given off resulting in an explosion.

What is the difference between ABC and CO2 fire extinguisher?

ABC Powder is a multi-purpose extinguisher medium suitable for all classes of fire, however although effective, a Powder Extinguisher will leave a residue that can damage sensitive electrical equipment. If this is a concern it may be wise to use a CO2 Extinguisher.

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How do I know what type of fire extinguisher I have?

Most fire extinguishers will have a pictograph label telling you which classifications of fire the extinguisher is designed to fight. For example, a simple water extinguisher might have a label like the one below, indicating that it should only be used on Class A fires.

Can you use fire extinguisher on electrical fire?

Fire extinguishers with a Class C rating are suitable for fires in “live” electrical equipment. Both monoammonium phosphate and sodium bicarbonate are commonly used to fight this type of fire because of their nonconductive properties.

Which type of fire extinguisher is red in color and has a pressure gauge?

CO2 or Dry Chemical – Carbon dioxide extinguishers You can recognize this type of extinguisher by its hard horn and absent pressure gauge. CO2 cylinders are red and range in size from five to 100 pounds or larger. CO2 extinguishers are designed for Class B and C (flammable liquid and electrical) fires only.

What are the different sizes of fire extinguishers?

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. Common fire extinguisher sizes and their approximate 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.

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