USCG Exam PracticeElectrical safety and general safety
Under 46 CFR §183.530, electrical equipment installed in a space containing a gasoline engine must be which of the following?
- A. Waterproof and rated for marine use
- ✓ Explosion-proof, ignition-protected, or part of an intrinsically safe systemCorrect
- C. Grounded to the engine block and fitted with a resettable breaker
- D. Explosion-proof only; ignition-protected equipment is not an acceptable alternative
Why B is correct
46 CFR §183.530(a) requires that electrical equipment in spaces containing machinery powered by gasoline or other fuels with a flashpoint of 43.3 °C (110 °F) or lower must be explosion-proof, ignition-protected, or part of an intrinsically safe system. All three alternatives are acceptable under the regulation.
Cited:46 CFR §183.530