On Tue, 14 Mar 2006 14:41:06 -0000 someone who may be "TheScullster"
wrote this:-

By re-routing the first "leg", I believe I can reduce the distance to the
junction box to about 12m.

A few more questions before anyone can even begin to feel kind
enough to answer your question.

What is the rating and type of protective device?

I then intended to put a more substantial jb at that point and run separate
6mm feeds to oven and hob.
The initial 12m run is located in the first floor ceiling and grouped with
the main "wiring loom" for power, lighting etc.

How many circuits is it grouped with and how heavily loaded are
they? How are the cables fixed? Are they clipped to a wall, run in
trunking? Do they run near a heat source?

The jb and two separate feeds will run across loft space above kitchen
extension

Ambient temperature? Thermal insulation?

and then plastered into wall (say 7m max length total each
separate feed).

Plastered directly in the wall, or in a conduit?


--
David Hansen, Edinburgh
I will *always* explain revoked encryption keys, unless RIP prevents me
http://www.opsi.gov.uk/acts/acts2000/00023--e.htm#54