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Fire Extinguisher Types & Fire Extinguisher Ratings

Fire Extinguisher Types

Class Symbol Type of Fire and Examples Extinguisher Choice
A Common Combustibles: wood, paper, cloth, etc.
Deep seated states of materials most difficult
Proper agent to "Hot Spot"
Thorough overhaul of material necessary

Class A
B Flammable liquids and gases: gasoline, propane and solvents
Spill fires
Obstacle fires
Fuel-in-depth fires
Gravity/3-dimensional fires
Pressure fires

Class AB
C Live electrical equipment: Computers, fax machines
Energized electrical situations

Class ABC
D Combustible metals: Magnesium, lithium, and titanium
Flammable metals

Class D
K Cooking Media: Cooking oils and fats
Class AK

Fire extinguisher categories are the ratings for fire extinguishers.  Before you pick the fire extinguisher cabinet you should know the fire extinguisher categories to choose the correct fire extinguisher.

Fire Extinguisher Rates for ABC Type

Nominal Capacity  
PSI
Range (Feet)
U/L Rating
Coast Guard Approved
2.5 lb 150 8-12 1A10BC -
2.5 lb 150 8-12 1A10BC Yes
5 lb 195 10-15 2A10BC ONLY WITH SECURITY BRACKET
5 lb 195 10-15 2A10BC Yes
5 lb 195 10-15 3A40BC ONLY WITH SECURITY BRACKET
5 lb 195 10-15 3A40BC Yes
10 lb 235 10-15 4A80BC ONLY WITH SECURITY BRACKET
20 lb 235 12-18 10A120BC -

 

 

                                              
 
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Last modified: 09/12/13
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