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Explain Shore connection onboard a ship with class requirements and regulations

Shore connection box is provided at convenient position, to receive shore power supply, so that ship’s generators can be shut down, in port or Dry Docking.

Lloyd’s Requirements:
Connection box contains a circuit breaker or isolating switch with fuses.
Provided full information of supply system, normal ship voltage and frequency for AC current.
Main Switchboard must be provided with a link switch or a circuit breaker, voltmeter, ammeter, and an indicator to show that the cable is energised.
For 3-phase supply with earth neutral, an earthing terminal must be provided, for connecting the hull to shore side.
A phase sequence indicator is necessary to ensure correct connections.
Means shall be provided for checking polarity, and terminals should be labelled.

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