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USCG Exam PracticeEngine-room safety and hazardous materials

Under 46 CFR §183.530, electrical equipment installed in a space containing machinery powered by gasoline must be which of the following?

  1. A. Weatherproof and double-insulated
  2. ✓ Explosion-proof, ignition-protected, or part of an intrinsically safe systemCorrect
  3. C. Explosion-proof only; ignition-protected equipment is not acceptable in gasoline spaces
  4. D. Listed to NFPA 70 Article 500 and installed in the least hazardous location practicable

Why B is correct

46 CFR §183.530(a) requires electrical equipment in spaces containing machinery powered by gasoline or other fuels with a flashpoint of 43.3 °C (110 °F) or lower to be explosion-proof, ignition-protected, or part of an intrinsically safe system. Weatherproof or double-insulated ratings are not listed as acceptable alternatives.

Cited:46 CFR §183.530

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Under 46 CFR §183.530, electrical equipment installed in a space co… — USCG Exam Practice · CaptainsGround