electronicsuk said:I wouldn't bother installing an MCB until you buy the A/C units, then you can select something suitable based on their specification. 4mmsq T+E enclosed in an insulated wall is rated to 27A, or 37A clipped direct. A 20A type C should be more than sufficient for whatever you choose to install to cool an average size kitchen/utility room.
The wall is uninsulated, & the Kitchen & Utility Room are seperate rooms, but next to each other.
The Utility Room is at the moment a covered courtyard outside the back door, which I am going to have closed in & a new roof put on.
The Courtyard at the moment:
http://i167.photobucket.com/albums/u125/mdbalson/DSC00055.jpg
Then the washing machine, tumble dryer, microwave, & wine fridge can go out there, & not in the shed or kitchen.