In article , Bazzer Smith wrote:

"Sleeve your earth cables"???? Sleeve? I don't think I have an earth
cable
that I am aware of? What can all that mean?

If this is your level of understanding, it would be better for you to get
a
qualified electrician to do the job. Seriously. The result will be legal,
and
you'll still be alive to enjoy the use of it.

I have a degree in elecronics, more than your average 'qualified
electrician'.

A degree in electronics is of little practical use here if you still have to
ask which wire goes where in a simple bit of household mains installation.
What on earth did they teach you that you can actually use?

It is utterly irrelevant whether you or your electrician has a degree in
anything. (He might very well have one - who knows). He has to have the
appropriate C&G certificate in order to carry out electrical installation work
legally, and the course he will have had to attend to get this will ensure
that he also does it safely. In the situation you describe, he will be better
qualified than you.

Rod.