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

Here is Why You Need An Adapter

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

Isle of Man

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

Type C

Type G

Iraq

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

Type C

Type D

Type G