The alphanumerical value on certain fire extinguishers corresponds to which extinguishers?

The alphanumerical value on certain fire extinguishers corresponds to which extinguishers?

• A. A
• B. A and B
• C. B
• D. C and D

Answer: (B)

Fire extinguisher ratings use letters to show which fire classes the unit is effective against. The letters map to fire types: A for ordinary combustibles, B for flammable liquids, C for energized electrical fires, and D for certain metals. When you see an alphanumeric rating that includes both A and B (for example, something like 2A:10B), that extinguisher has been tested and rated for both Class A and Class B fires. The numbers give a sense of its relative strength in each class. So the alphanumeric value corresponds to extinguishers capable of handling both A and B hazards.

Fire extinguisher ratings use letters to show which fire classes the unit is effective against. The letters map to fire types: A for ordinary combustibles, B for flammable liquids, C for energized electrical fires, and D for certain metals. When you see an alphanumeric rating that includes both A and B (for example, something like 2A:10B), that extinguisher has been tested and rated for both Class A and Class B fires. The numbers give a sense of its relative strength in each class. So the alphanumeric value corresponds to extinguishers capable of handling both A and B hazards.