What recommended practice is used for electric installations on shipboard?

The recommended practice for electric installations on shipboard is IEEE 45, which provides guidelines specifically geared towards marine electrical systems. This standard addresses safety, reliability, and performance of electrical components and systems in marine environments, taking into account the unique challenges presented by ships, such as vibration, moisture, and corrosive conditions.

IEEE 45 outlines criteria for designing, installing, and maintaining electrical systems on marine vessels, which includes provisions for equipment selection, wiring methods, grounding, and protection against electrical hazards. By adhering to IEEE 45, designers and engineers can ensure that the electrical systems function effectively and safely during operation at sea, making it a fundamental standard in the maritime industry.

In contrast, while NFPA 70 (National Electrical Code) is widely recognized for its electrical safety standards applicable to buildings and structures, it does not specifically address the unique requirements of shipboard electrical installations. IEC 60092.353 and SAE J 1654 also focus on standards for marine electrical installations but do not hold the same level of recognition or specificity for shipboard applications as IEEE 45 does. Therefore, the relevance of IEEE 45 to marine electrical practice makes it the correct choice for this context.