What do the ratings on a fire extinguisher mean

In this case, fires containing wood, plastic, paper, gas, and oil, as well as electrical fires. For the A-rating, the number indicates the water equivalency of the powder in the extinguisher. In our example above, the 4 represents 5 gallons. A 2 on the label would indicate an equivalent of 2.5 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.

What Do the Numbers Mean On a Fire Extinguisher?

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.

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Fire Extinguisher Ratings. Fire extinguishers are classified by fire type. The A, B, C rating system defines the kinds of burning materials each fire extinguisher is designed to fight. The number in front of the A, B, or C indicates the rating size of fire the unit can extinguish. Located on the fire extinguisher label is the UL rating (Fire Extinguisher Ratings).

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What is the best brand of fire extinguisher?

Like with smoke detectors, it’s important to buy a kitchen fire extinguisher that has an ETL or UL rating. Luckily most of the products from major home safety brands like Amerex, Kidde, and First Alert are all ETL- or UL-certified. You’ll also want to find one with an easy-to-read pressure gauge.

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What is the best fire extinguisher for a computer fire?

What Type of Extinguishers Are There?Water Fire Extinguishers. When tackling a fire in the home where the fuel is paper or wood, using a water extinguisher is good as it drenches the material and eliminates …Foam Fire Extinguishers. …Carbon Dioxide Fire Extinguisher. …Wet Chemical Fire Extinguisher. …Dry Water Mist Extinguishers. …Dry Powder Extinguishers. …

How are fire extinguishers rated?

Understand that recharging a fire extinguisher can cost between $10 and $25. …Only use a portable fire extinguisher on a small fire. …It’s recommended that you inspect your extinguisher annually, looking for cracks or corrosion. …Understand how the extinguisher must be maintained by reading the instructions. …

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What does a b – 1 fire extinguisher do?

What is b1 fire extinguisher? Class A fires have a solid combustible fuel source like wood or paper. Because gasoline fires are the most common type of boat fire, marine-rated Class B fire extinguishers are the class required on most boats. The number after the B, for example a B1 or B2 extinguisher, indicates the capacity of the extinguisher.

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Fire Extinguisher UL Rating & Placement as per NFPA 10 Part 1 English Video Answer


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