🔍 Key Concepts
• fire classification system (Classes A, B, C, D, K)
• difference between ordinary combustibles, flammable liquids, and energized electrical equipment
• what happens to an electrical fire classification if the power is secured
💭 Think About
• First, match each answer choice to the general type of material (ordinary combustible, flammable liquid, plastic-like, energized electrical). Which one stands out as different?
• Think about why one specific fire class is unsafe to attack with water due to shock hazard. Which type of material would cause that danger?
• Consider what happens when power to electrical equipment is shut off—does the fire class stay the same or change to another class?
✅ Before You Answer
• Be sure you know that Class A is associated with ordinary combustibles like wood, paper, cloth.
• Verify which class covers flammable liquids such as fuel oil and gasoline.
• Confirm which fire class is defined by energized electrical equipment, not by what is physically burning.