🔍 Key Concepts
• The basic classification system for fires (Class A, B, C, D) used on ships and in maritime firefighting
• Which type of fuel or source is associated with each class (ordinary combustibles, flammable liquids, electrical equipment, combustible metals)
• The types of portable fire extinguishers typically used for electrical fires
đź’ Think About
• Match each fire class with its primary fuel: For example, which class is for wood, paper, and cloth? Which is for flammable liquids? Which is for metals? The remaining one is for electrical equipment.
• Think about why a special class is needed for electrical equipment—what danger exists if you use water or foam directly on live electrical circuits?
• Recall which class label you would look for on an extinguisher in an engine control room full of energized panels and switchboards.
âś… Before You Answer
• Be sure you can clearly define each fire class (A, B, C, D) and its typical fuel/source before choosing.
• Confirm which class is specifically associated with energized electrical equipment, not just any equipment that happens to burn.
• Verify you are not confusing combustible metals with electrical fires—those are a separate class.