Short Answer 
The extinguisher labeled 10A:100B:C is suitable for Class A (wood and paper), Class B (flammable liquids), and Class C (electrical) fires, with specific effectiveness noted by the numbers. It’s important to follow safety protocols when handling flammable chemicals and to use appropriate firefighting substances.
Step 1: Understanding the Extinguisher Label
An extinguisher labeled as 10A:100B:C indicates its suitability for multiple fire classes. Specifically, it addresses:
- Class A fires: Involving wood and paper.
- Class B fires: Involving flammable liquids.
- Class C fires: Involving electrical components.
Step 2: Interpreting the Numbers
The numbers on the extinguisher label signify its effectiveness. The first number, 10, designates effectiveness against Class A fires, correlating to 12.5 gallons of water. The second number, 100, represents the area (in square feet) that the extinguisher can effectively cover for Class B fires. The letter C confirms its safe use on electrical fires.
Step 3: Safe Handling of Flammable Chemicals
When dealing with flammable chemicals, it’s vital to adhere to safety protocols. Utilize appropriate firefighting substances, such as fluorinated solutions, that can effectively extinguish fires. Additionally, be aware that various engines may create flames with different temperatures and colors, emphasizing the need for careful handling and fire prevention practices.