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

Here is Why You Need An Adapter

The outlet and plug type used in Norfolk Island is I and in New Caledonia are C and F. This is how they look like.

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

Type C

Type F

In Norfolk Island, outlets of type I are in use.

Type I

I am from

going to