The table below summarises the plug types, voltage and frequency of electrical current in both Cook Islands and China, Peoples Republic of.
| Cook Islands | China, Peoples Republic of | |
|---|---|---|
| Plug Types | I | A, I, G |
| Voltage | 240V | 220V |
| Frequency of electrical current | 50Hz | 50Hz |
Cook Islands uses Plug Type I.
In China, Peoples Republic of 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
(China, Peoples Republic of)
Socket Type I
(Cook Islands) to Plug Type G
(China, Peoples Republic of)
China, Peoples Republic of also uses Socket Type I, which is used in Cook Islands. If using an appliance that has a Type I Plug in the Type I Sockets of China, Peoples Republic of, you will not need an adaptor.
The voltages found in Cook Islands (240V) and China, Peoples Republic of (220V) are not exactly the same, but the difference is tolerable, so you should not need a transformer.
The frequency found in Cook Islands and China, Peoples Republic of is exactly the same (50Hz). Timing devices and appliances that use motors will function as expected under this frequency.