You Do Need power plug adapter while traveling from American Samoa 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 American Samoa are A, B, F and I. This is how they look like.

American Samoa

In American Samoa, outlets of type A, B, F and I are in use.

Type A

Type B

Type F

Type I

New Caledonia

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

Type C

Type F