Which class is not part of the standard fire classes?

Which class is not part of the standard fire classes?

• A. Class E
• B. Class B
• C. Class A
• D. Class C

Answer: (A)

Understanding fire class labels helps you match the extinguisher and approach to the fire type. In standard classifications used today, the common categories are Class A for ordinary combustibles, Class B for flammable liquids, Class C for energized electrical equipment, Class D for metals, and Class K for cooking oils. Class E isn’t part of this standard set. Some older or alternative schemes used E to denote electrical fires, but the current widely adopted practice uses Class C for electrical fires. So the label that isn’t part of the standard lineup is Class E.

Understanding fire class labels helps you match the extinguisher and approach to the fire type. In standard classifications used today, the common categories are Class A for ordinary combustibles, Class B for flammable liquids, Class C for energized electrical equipment, Class D for metals, and Class K for cooking oils. Class E isn’t part of this standard set. Some older or alternative schemes used E to denote electrical fires, but the current widely adopted practice uses Class C for electrical fires. So the label that isn’t part of the standard lineup is Class E.