🔍 Key Concepts

• Class C electrical fires and why you must avoid agents that conduct electricity • How CO2, dry chemical, foam, and water fog** act on a fire (cooling, smothering, interrupting chemical reaction)** • Which agents can damage sensitive electronics vs. which are safer in enclosed spaces

💭 Think About

• For each choice, ask yourself: does this agent conduct electricity or risk shocking the operator? • Think about which agents leave residue that can harm electrical equipment versus those that leave little or none. • Consider how each agent works: does it mainly cool, smother (displace oxygen), or coat the fuel—and which is preferred for energized equipment?

✅ Before You Answer

• Verify which extinguishers are labeled for Class C (electrical) fires in standard fire classifications. • Eliminate any agent that is water-based or can conduct electricity to the person using it. • Among the non‑conductive agents, compare which one is most commonly recommended for energized electrical panels and equipment.