On the basis of the type of fuel, fires are classified into the following :
- Class A Fires

solid combustible materials of organic nature such as wood, paper, rubber, plastics, etc.
- Class B Fires

flammable liquids
- Class C Fires

flammable gases under pressure including liquefied gases.
- Class D Fires

combustible metals, such as magnesium, sodium, potassium, etc,