You Do Need power plug adapter while traveling from Isle of Man to New Zealand.

Here is Why You Need An Adapter

The outlet and plug type used in New Zealand is I and in Isle of Man are C and G. This is how they look like.

In Isle of Man, outlets of type C and G are in use.

Type C

Type G

In New Zealand, outlets of type I are in use.

Type I

I am from

going to