NFPA 10 - Standards for Portable Fire Extinguishers
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The A rating is a water equivalency rating. Each A is equivalent to ________ of water.
Answer: 1 1/4 gallons. Note that 4A = 5 gallons of water.
The ________ rating is equivalent to the amount of square footage that the extinguisher can cover, handled by a professional.
Answer: B:C Note that 20 B:C = 20 square feet of coverage.
C indicates it is suitable for use on ________ ________ ________.
Answer: electrically energized equipment.
