Which classes of fire are classified as Class A fires?

• A. Flammable gases
• B. Ordinary combustibles
• C. Electrical fires
• D. Metal fires

Answer: (B)

Class A fires are specifically classified as those involving ordinary combustibles, which include materials such as wood, paper, cloth, rubber, and some plastics. These materials are common in both residential and commercial settings, making the understanding of Class A fires critical for effective fire response and management.

In contrast to Class A fires, Class B fires involve flammable liquids and gases, Class C fires are related to electrical equipment, and Class D fires involve combustible metals like magnesium or sodium. Recognizing the characteristics of Class A fires is essential for choosing the appropriate extinguishing methods, which typically involve water or multipurpose dry chemical extinguishers that can cool and smother the flame effectively. Understanding these classifications helps in implementing safety measures and training personnel to respond appropriately in fire emergencies.