On 22/08/2019 23:43, John Rumm wrote:
On 22/08/2019 17:31, ARW wrote:
On 22/08/2019 14:13, John Rumm wrote:
On 22/08/2019 11:16, rick wrote:
Typical a job just got bigger
Having to fit a 200x90 extract duct through an external wall (Timber
fame-cavity-brick)
Brickwork cut neat, cut inside dry lining fine ... removed
insulation and three are 2 single core cables (6181Y 1.5mm2) right
through centre of where duct needs to go.
Had no option duct has to go though a this point.

It is not an easy job to replace these - would need a large number
of 8x4 dry lining sheets removed.
No option to remove floor above due to underfloor heating

I have drilled in a new hole in timber frame header (horizontal) to
allow reroute.

The is not enough slack in the singles to do this .... and easy
solution would be to cut each single and splice in a 12" extension.
I can make the cut so this happens above the header plate, and it
can be clipped to joist for mechanical support.

The splice ... is it acceptable to solder connect ? .,.... I could
solder, insulate & sheath with double layers of heat shrink, and
mechanically fix .... simple & neat.

Solder and heatshrink is fine. Crimps and heatshrink would be the
more commonly used way.

Is this acceptable under 17th Edition ?

Yup, and the 18th, which is what now applies :-)

Not that any inspection taking place .... but prefer to do things
right.

Alternative but bulky & not so easy is to splice in with 2 x Ashley
J804 junction boxes.

Wago terminals and a wago box would also be ok.


Or Wago connectors in a choc box. I believe the wago boxes are bulky.

Yup true, although the cable grips are easier to use...



The OP did suggest he could clip the cables. That would IMHO meet the
regs without any cord grip.

--
Adam