You Do Need power plug adapter while traveling from Nigeria to New Caledonia.

Here is Why You Need An Adapter

The outlet and plug type used in New Caledonia are C and F and in Nigeria are D and G. This is how they look like.

In Nigeria, outlets of type D and G are in use.

Type D

Type G

In New Caledonia, outlets of type C and F are in use.

Type C

Type F

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