Which plug adaptor do I need when travelling from Cook Islands to Montserrat (Leeward Islands)?

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Summary

The table below summarises the plug types, voltage and frequency of electrical current in both Cook Islands and Montserrat (Leeward Islands).

Cook IslandsMontserrat (Leeward Islands)
Plug TypesIA, B
Voltage240V230V
Frequency of electrical current50Hz60Hz

Plug Adaptors

Cook Islands uses Plug Type I.

Your Appliance has Plug Type I

In Montserrat (Leeward Islands) there's more than one socket type in use. You may require more than one adaptor.

Socket Type I
(Cook Islands) to Plug Type A
(Montserrat (Leeward Islands))

Socket Type I
(Cook Islands) to Plug Type B
(Montserrat (Leeward Islands))

Considerations

Voltage

The voltages found in Cook Islands (240V) and Montserrat (Leeward Islands) (230V) are not exactly the same, but the difference is tolerable, so you should not need a transformer.

Frequency of Electrical Current

The frequency of electrical current found in Cook Islands (50Hz) differs to that found in Montserrat (Leeward Islands) (60Hz).

Most equipment is not affected by differences in frequencies. Some exceptions are:

  • Electric clocks: Some electric clocks use the frequency of electrical current to measure time. If the clock is designed for one frequency, but used with another, time shifts could be experienced.
  • Appliances using motors: If there is a motor load associated with an appliance, the frequency governs the speed in revolutions of the motor. This could mean that the motor will spin faster, or slower than intended and could have a detrimental effect in the appliance's operation. This is of particular concern in power tools and other machinery that uses motors, so if you must use these, you should seek access to a frequency converter.

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