Fires are classified into four categories that include:
Class A - Ordinary combustibles or fibrous material, such as:
Class B - Flammable or combustible liquids such as:
Class C - A fire involving any type of energized electrical equipment
Class D - Certain combustible metals, such as magnesium, titanium, potassium and sodium. These metals burn at high temperatures and give off sufficient oxygen to support combustion. They may react violently with water or other chemicals, and must be handled with care.