Best answer: How do you read a fire extinguisher?

The left side top number is the serial number of the extinguisher. Below the number will be a name and number stamp. The name should read the first and last name of the person who conducted the service. That technician’s state id number is located below the name.

What do fire extinguisher numbers mean?

The number indicates the relative size of the extinguisher, and the letter indicates the type of fire it will extinguish. … On Type A extinguishers, the number relates to how many gallons of water the extinguisher is equal to for a Type A fire. Type B fires are of flammable liquids such as gasoline or oil.

What do the codes on a fire extinguisher tell you?

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. … The Class B size rating indicates the square footage the extinguisher can cover.

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.

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What does 2A 10bc mean?

A fire extinguisher that is rated 2A:10 BC means it has a fire fighting capacity equivalent to: 2.5 Gallons of Water and 10 Square Feet for a BC Type Fire.

What is one disadvantage of a fire extinguisher?

Disadvantages: limited to class A fires only. leaves a small amount of residue after the fire has been extinguished. water is an electrical conductor, making the extinguisher unsuitable if the class of fire has an electrical supply, or for use near live electrical equipment.

How do I know if a fire extinguisher is expired?

Check for an expiration date.



Look for a paper tag on the fire extinguisher showing a record of maintenance. It may not connote an expiration date, but if the oldest date on the tag was more than 10 years ago, your extinguisher’s days are likely numbered—it may already have lost its ability to fight flames.

What are the 5 classes of fire extinguishers?

What are the 5 Types of Fire Extinguishers?

  • Class A Fire Extinguishers. Class A fire extinguishers are safe for use on ordinary combustible fires, like those fueled by paper or wood. …
  • Class B Fire Extinguishers. …
  • Class C Fire Extinguishers. …
  • Class D Fire Extinguishers. …
  • Class K Fire Extinguishers.

What is a Type D fire?

Class D fires only involving combustible metals – magnesium, sodium (spills and in depth), potassium, sodium-potassium alloys uranium, and powdered aluminum.

Fire safety