On 12/12/2016 01:24, John Rumm wrote:
On 11/12/2016 21:33, Fredxxx wrote:
On 11/12/2016 20:23, John Rumm wrote:
On 11/12/2016 19:07, Larry wrote:


Just putting in a fused spur off the ring main - only 6 inches away
from
existing double socket
Carefully removed plaster next to double socket - all clear.
Marked the position of new backbox for fused switch.
Drilled a honeycomb of holes where back box to go.
When I started chipping plaster out - I found that a diagonal 6mm
cable for the
cooker ran straight through where the box was to go.
I had actually drilled through the T&E - a perfect hole straight
through - it
had not tripped RCD or fuse.

Question: The cooker was recently wired in as part of a kitchen
upgrade : are
diagonal runs permitted under the relevant regs?

No, all concealed cable runs should be either inline with a visible
accessory, or within 150mm of corner or wall to ceiling transition.

See :

http://wiki.diyfaq.org.uk/index.php/...lectric_cables

On a cooker, because the cooker switch must be placed a lateral distance
away from the stove, I used a dummy box with cover under the
work-surface.

It seems that the dummy box wasn't required as the horizontal and
vertical zones were covered by the outlet in one case, and the switch in
the other.


Indeed, the switch and the flex outlet both create allowable horizontal
and vertical routes - and they will intersect at some point - so there
is no need for diagonal runs.

Yes, Tim also eluded to that.

I'm now a little wiser where as before I erred on the side of caution!