5. Foam Fire Extinguisher: The foam in this extinguisher works best on class A and B fires, but it’s not suitable for gaseous fires. The foam blankets the fire, which prevents vapors from rising and cools the surface. 6. Clean Agent …
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. The Class B size rating indicates the square footage the extinguisher can cover. 20B means that as long as you …
1926.150 – Fire protection. | Occupational Safety and …
1926.150 (c) (1) Fire extinguishers and small hose lines. 1926.150 (c) (1) (i) A fire extinguisher, rated not less than 2A, shall be provided for square feet of the protected building area, or major fraction thereof. Travel distance from …
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 …
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What are the different fire extinguisher ratings?
Here are some fire extinguisher ratings: 1 1-A, 2-A, 3-A, 4-A, 6-A, 10-A 2 1-B, 2-B, 5-B, 10-B, 20-B, 30-B, 40-B More …
What does class a mean on a fire extinguisher?
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.
What size fire extinguisher can I use instead of a 2A?
One hundred feet, or less, of 1 1/2-inch hose, with a nozzle capable of discharging water at 25 gallons or more per minute, may be substituted for a fire extinguisher rated not more than 2A in the designated area provided that the hose line can reach all points in the area.
What does 4A mean on a fire extinguisher?
– The A rating is a water equivalency rating. Each A is equivalent to 1 1/4 gallons of water. 4A = 5 gallons of water. – The B:C rating is equivalent to the amount of square footage that the extinguisher can cover, handled by a professional.
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Reference:
https://www.usfa.fema.gov/
https://en.wikipedia.org/wiki/Fire_extinguisher