What color shape on a fire extinguisher indicates a Class A fire?

On a fire extinguisher, the color shape indicating a Class A fire is represented by a green triangle. Class A fires involve ordinary combustible materials such as wood, paper, cloth, and certain plastics. The green triangle symbolizes that the extinguisher is suitable for use on these types of fires, and knowing this shape is crucial for effectively responding to a fire emergency involving such materials.

In terms of other shapes, those do not correspond to Class A fires. For instance, fire extinguishers designed for Class B fires, which involve flammable liquids and gases, typically have a blue circle, while those intended for Class C fires, which pertain to electrical equipment, usually bear a red square. Understanding these classifications and their visual indicators helps first responders make quick decisions when selecting the appropriate fire extinguisher for various fire types.