classification ratings

What Do The Rating Symbols On A Fire Extinguisher Indicate?

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What Do The Rating Symbols On A Fire Extinguisher Indicate? Extinguishers are classified by a number and letter symbol. The number indicates the relative size of the extinguisher, and the letter indicates the type of fire it will extinguish. … On Type B extinguishers, the number tells you the square footage of the fire the

What Do Numbers Mean On Fire Extinguisher?

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What Do Numbers Mean On Fire Extinguisher? 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