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

Here is Why You Need An Adapter

The outlet and plug type used in Isle of Man are C and G and in Iraq are C, D and G. This is how they look like.

Iraq

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

Type C

Type D

Type G

Isle of Man

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

Type C

Type G