Moving a consumer unit

[greedy]

Hiya All

I have a friend who wants his consumer unit replacing,this will be my first since passing exams,(loads of other electrical work but just not done a cu yet).The problem i have is its in the garage and mounted on a wooden beam, i will have to move it to the wall just below so its possible i may need to extend the cables.Can i just use butt connectors or is there a better way?

Thanx for any advice

 

[Mac]

Thru crimps would be fine or try these mate.
Wagobox Home of The Maintenance Free Junction Box

 

[greedy]

Thanks mate...