What is a primary characteristic of Class A fires?

Class A fires are characterized specifically by the presence of ordinary combustibles, which include materials such as wood, cloth, paper, rubber, and certain plastics. These types of fires are commonly seen in residential and commercial structures where these materials are prevalent.

This classification is crucial for determining the appropriate extinguishing agents to use. Water is typically effective for Class A fires, as it cools the burning materials and helps to remove the heat, one of the key components of the fire triangle. Understanding that Class A fires involve these common combustibles allows firefighters to quickly assess the situation and deploy the correct tactics and equipment.

The other classifications mentioned, such as those involving flammable gases or energized electrical equipment, pertain to different fire classes, each requiring specialized approaches and extinguishing methods. This clear distinction ensures that firefighters are trained and equipped to handle various fire scenarios effectively.