Which class of fire includes both gases and greases?

The classification of fire is important for understanding the appropriate methods of extinguishing different types of fires. Class B fires specifically involve flammable liquids and gases, which includes substances like petroleum products, oils, and greases.

When dealing with Class B fires, water is not effective and may even exacerbate the situation by spreading the flames; instead, specialized extinguishing agents such as foam, dry chemical, or carbon dioxide are required to suffocate the fire and prevent re-ignition.

Class A fires pertain to ordinary combustible materials like wood and paper, Class C fires are related to energized electrical equipment, and Class D fires involve combustible metals. These classifications help firefighters select the proper extinguishing agent and approach for safe and effective fire suppression.