🔍 Key Concepts
• Review the standard fire classes used on maritime exams (A, B, C, D) and what types of materials each covers.
• Focus on what is shown specifically in section 1 of the illustration: note the type of equipment and how it is powered.
• Remember that some fire classes are defined by energized electrical equipment, not just the material that eventually burns.
đź’ Think About
• What kind of system or machinery is shown in box 1, and how is it connected to its power source?
• If that equipment caught fire while still energized, which fire class is intended for dealing with that hazard?
• How is that fire class different from the class used for ordinary combustibles such as wood, paper, and cloth?
âś… Before You Answer
• Identify whether the equipment in illustration #1 is electrically energized or just ordinary solid material.
• Match the hazard you see to the correct U.S. fire class definition: A (ordinary combustibles), B (flammable liquids), C (electrical), D (combustible metals).
• Before choosing, ask yourself: "Does this class depend on the type of fuel or on the fact that it’s powered by electricity?"