• 9.63.1.1Where electricity is to be supplied to a ship from a shore supply the shipboard shore power facility shall include—
  • (a)a circuit breaker operating in all live conductors of the supply, including neutral, fitted adjacent to the shore supply inlet on the ship;
  • (b)a test device, connected on the supply side of the ship’s shore supply circuit breaker to check, and visually indicate, the polarity of the shore supply in relation to the ship’s system;
  • (c)an interlocking circuit to ensure the shore power cannot be connected unless the polarity is correct or a polarity reversal arrangement incorporating interlocking circuitry is installed;
  • (d)in 3 phase supplies—
    • (i)a means of checking the phase sequence in relation to the ship’s system; and
    • (ii)appropriate switchgear to facilitate the reversal of phase sequence.
• 9.63.1.2The polarity of plugs, socket outlets and couplers used for a ship’s shore power supply equipment shall be in accordance with AS/NZS 3112 and AS/NZS 3123.

  NOTE

  : Where necessary, repairs may be required to correct the polarity of the shore supply connection. Electrical safety regulation may require that low voltage work be carried out by licensed electricians.

• 9.63.1.3Fixed wiring shall be used between the shore connection circuit breaker and the changeover switch.
• 9.63.1.4At the main switchboard or adjacent to the changeover switch, there shall be a means of indicating for each phase when the shore supply is energised.

The ship’s shore supply connecting cable shall—

• (a)be a heavy duty flexible cord or flexible cable;
• (b)have a minimum current capacity of 15 A;
• (c)comply with AS/NZS 3191; AS/NZS 5000.1 and/or AS/NZS 3008.1.1 as applicable;
• (d)be arranged to allow for the movement of the ship at the berth without imposing tension on the cable or connections, or exposing the cable to mechanical stress or damage; and
• (e)have a length that will ensure the voltage drop for the ship’s electrical installation is kept within the requirements of AS/ NZS 3000 relating to voltage drop; ie the voltage drop at any point of the electrical installation shall not exceed 5% of the nominal voltage.

The changeover switch or device for the ship supply/shore supply shall operate simultaneously in all live conductors and neutral. Except where the changeover switch is direct acting (ie a mechanical switch), the control circuit of any change over arrangement shall include, in addition to any mechanical interlocks, electrical interlocks on contactors, circuit breakers or other switching devices.

Earth continuity between the ship’s earth and the shore earth shall be maintained through the appropriate pin in a plug/socket shore power connection or by a dedicated earth terminal in a shore supply connection that uses terminals.

A notice containing the following information shall be provided at the shore connection facility on the ship—

• (a)supply voltage;
• (b)frequency of the ship’s a.c. system;
• (c)the procedure for carrying out the connection.

A means to prevent stress on terminal connections or the accidental removal of the supply inlet plug shall be provided on the shore connection facility on the ship.

Guidance regarding possible configurations for the ship’s shore connection may be found in AS/NZS 3004.