The numbers indicate the size rating of each extinguishing agent. Here’s how it works: 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.
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 numbers indicate how much of the fire can be put out by the fire extinguisher. Every number before the A means it is as effective as 1 ¼ gallons of water. Click to see full answer.
What Do the Letters and Numbers Mean on Your Fire …
If you see an extinguisher with “3A” that means it would be as effective as using 3 ¾ gallons of water on the fire. This helps gauge just how large a fire you can tackle. Class B fire extinguishers have a slightly different numerical assignation.
The letters on a fire extinguisher’s label indicate which classes of fire it can effectively fight. For example, an extinguisher marked “1 A :1 B: C ” could extinguish Class A, Class B, and Class C fires—if it’s big enough to tackle the blaze. That’s where numbers come in. The numbers preceding the letters on the label indicate just …
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What does 3A mean on a fire extinguisher?
If you see an extinguisher with “3A” that means it would be as effective as using 3 ¾ gallons of water on the fire. This helps gauge just how large a fire you can tackle.
What does 2A mean on a fire extinguisher?
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 13A mean on a fire extinguisher?
This code, for example 13A/55B, defines the Class (or type) of fire and the size of fire this type of fire extinguisher is capable of extinguishing. Fire extinguishers that can put out a fire up to this size are rated 13A.
What do the letters on a fire extinguisher mean?
The letter on a fire extinguisher indicates its classification: 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
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TYPES OF FIRE AND FIRE EXTINGUISHERS | WHICH FIRE EXTINGUISHER TO BE USED ON WHICH CLASSES OF FIRE Video Answer
Reference:
https://www.usfa.fema.gov/
https://en.wikipedia.org/wiki/Fire_extinguisher