Choosing the Right Fire Extinguisher
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