The table below summarises the plug types, voltage and frequency of electrical current in both Cook Islands and Congo, Republic of the.
| Cook Islands | Congo, Republic of the | |
|---|---|---|
| Plug Types | I | C, E |
| Voltage | 240V | 230V |
| Frequency of electrical current | 50Hz | 50Hz |
Cook Islands uses Plug Type I.
In Congo, Republic of the there's more than one socket type in use. You may require more than one adaptor.
Socket Type I
(Cook Islands) to Plug Type C
(Congo, Republic of the)
Socket Type I
(Cook Islands) to Plug Type E
(Congo, Republic of the)
The voltages found in Cook Islands (240V) and Congo, Republic of the (230V) are not exactly the same, but the difference is tolerable, so you should not need a transformer.
The frequency found in Cook Islands and Congo, Republic of the is exactly the same (50Hz). Timing devices and appliances that use motors will function as expected under this frequency.