🔍 Key Concepts

• Hazardous locations and why special electrical equipment is required in spaces that are not gas free • The specific meaning of explosion-proof in marine electrical safety standards • Difference between power source type (battery vs. wired) and design/approval for use in flammable atmospheres

💭 Think About

• Ask yourself: In a space that may have flammable vapors, what is the primary safety concern with any electrical device? • Consider whether simply being battery-powered or self-contained automatically makes a device safe around explosive gases, or if a specific certification/approval is needed. • Think about which choice(s) explicitly address preventing ignition of a flammable atmosphere, not just how the lamp gets its power.

✅ Before You Answer

• Verify which option clearly refers to equipment specifically designed and certified for use in explosive atmospheres. • Check whether "battery fed" or "self-contained" alone guarantees that no spark or hot surface can ignite vapor. • Confirm that regulations and standards for hazardous spaces focus on approved construction for hazardous locations, not just the power source.