🔍 Key Concepts

• Dead-front switchboard definition in marine electrical safety standards • Purpose of insulation and guarding live parts on electrical equipment • How crew can safely operate a switchboard under normal conditions

💭 Think About

• Which option best describes a design where an operator cannot accidentally touch live electrical parts during normal use? • Look for the choice that focuses on protecting personnel from contact with energized components, not just missing items. • Ask yourself: on a real ship, what feature would a safety inspector look for to call a switchboard ‘dead front’?

✅ Before You Answer

• Verify which option specifically mentions insulation or shielding of live parts. • Eliminate answers that only talk about what's missing (like breakers, rails, or mats) but don’t ensure safety from electric shock. • Confirm that the correct description would let you operate switches normally without exposure to live terminals.