What is the current rating of shore power receptacles commonly found on ships?

Shore power receptacles on ships are typically rated at 400 amps, making this choice the correct answer. This standard rating is designed to accommodate the substantial power requirements of various onboard systems and equipment when vessels are docked and connected to shore power. The capacity allows for sufficient electrical supply to operate everything from lighting and HVAC systems to various machinery and equipment, ensuring that the ship can maintain operations without relying on its onboard generators.

This rating is also reflective of industry standards and practices, which prioritize safety and efficiency. By providing this level of power, ships can effectively manage their electrical loads while at port, preventing potential overload situations and ensuring that the power supply from the shore can meet demand. Other potential ratings, such as 200, 300, or 500 amps, could exist in specific applications or regions but 400 amps remains the most common and widely recognized standard in maritime operations for shore power receptacles.