Symbols of fire classes in the Kingdom of Thailand
Class A fires are fires caused by ordinary combustible materials, such as wood, cloth, paper, rubber and many plastics. They burn with an ember and leave an ash.
Class B fires are fires caused by flammable liquids (burn at room temperature) and combustible liquids (require heat to ignite). Petroleum greases, tars, oils, oil-based paints, solvents, lacquers, alcohols, and flammable gasses.
Class C fires are fires caused by fuels that would be A or B except that they involve energized electrical equipment.
Class D fires refer to fires caused by combustible metals such as magnesium, sodium, potassium. Zirconium Titanium
Class F fires refer to fires in which the fire is rapidly expanding and the maximum temperature is reached.
Class G fires refer to fires caused by Class B and C fires occurring in the engine compartment.
Class K fires in cooking appliances that involve combustible cooking media (vegetable or animal oils and fats).