🔍 Key Concepts

• Classes of fire (especially Class C – energized electrical equipment) • Effects of water or foam on energized electrical circuits • Most appropriate extinguishing agents for electrical fires (CO2, dry chemical, etc.)

💭 Think About

• Which extinguishing agents are non‑conductive and will not create a shock hazard if power is not fully isolated everywhere? • What are the typical first-choice extinguishers recommended on ships for energized electrical equipment fires? • Among the options, which one is least likely to damage electrical equipment and spread burning material?

✅ Before You Answer

• Verify which choices involve water or foam, and remember how they behave around electricity • Confirm which agent is commonly placed near switchboards and control panels on ships • Make sure the selected method will both avoid electrical shock and be effective on an electrical (Class C) fire