John Rumm wrote:
The Medway Handyman wrote:

2] Cut out small damaged section of cable, use cable crimps to re
join, bury in new plaster. There is enough slack to do this. Simplest
option, cheapest for customer.

So long as you use heatshrink to insulate each wire, and a second
layer to insulate the whole join then you will be fine. It helps if
you cut each wire a different length such that you don't end up with
a bunch of crimps beside each other which will make getting the
overall heatshrink on a tad trickey!

Thanks for your good advice as usual John, but I'm now a little confused!

How do you go about fitting heatshrink to each wire? Each wire still has
its own insulation apart from the bit inside the crimp. Or do you mean
heatshrink just over the crimp? Or would you pull the heatshrink back, make
the crimp & then allow it to spring back?

I do see the point about staggering the crimps - good tip.

Perhaps I'm having a blond moment :-)


--
Dave
The Medway Handyman
www.medwayhandyman.co.uk
01634 717930
07850 597257




To test your work you could disconnect the cable at both switches and
then short all the conductors together at one. Now use a low ohms
range to measure resistance between them at the other end. That
should prove you have a low resistance join. You can compare your
readings with the resitance / metre tables in the OSG (assuming you
know the approximate length of cable).

What's the point in PVC channel anyway? It offers little
protection. Is it just to make thing easier for the plasterers?

Basically yes - protects the cable from trowel damage, and holds it
flat to the wall. It is sod all use later should you want to extract
and replace a cable.


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