Singles in chase

It'safirstforme

It'safirstforme

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chased capped and plastered over singles a while back then I hopped on here and asked for an opinion and was rightly cohrrected,that you cannot put singles in capping, that It needed to be in 20mm black conduit
I have got around to try and mend the problem and removed the plaster but am not sure about using the 20mm conduit on a single brick wall the length of which is 2.5 meter on one side then 4 meter on the other side finishing of with 1.5 meters,the plaster is not so deep that I can get away with just a bit of chase on the brick
So could I use oval conduit is there regulations against?
I did buy some oval to round adapters but am not sure how I would manage the conduit on a corner bend
It was also suggest that I could use some wagos three of them and fit them in the back box, that way I don't have to worry about the cables in the chase ( Using this method does seem like a good Idea but theres 2 red 2 black 2 neutral wires so how would I proceed to connect them to 2 T&E cables to four sockets.
On the other room I did manage to chase the black conduit but I hipt a snag in that on one side the conduit goes into the back box but on the other side it cannot as it does not seem to fit into an old single back box which was used to extend the sockets

Here's the photos

Thanks in advance
Cheers
IMG_20211121_145558.jpg
IMG_20211121_145640.jpg
IMG_20211121_145322.jpg
IMG_20211121_145234.jpg
 
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As it is all exposed, could you replace the singles with T&E and re-jig it?
 
It'safirstforme said:
chased capped and plastered over singles a while back then I hopped on here and asked for an opinion and was rightly cohrrected,that you cannot put singles in capping, that It needed to be in 20mm black conduit
Click to expand...

You are using entirely the wrong sort of cable for the job, you should be using twin and earth cable, which is oval, usually with a grey outer, usually just capped with plastic or galv channel - which minimises how deep it needs to be in the plaster.

You were told the singles is normally used in conduit, because that is how it is normally used, but round conduit run on the surface. It is not usually sunk in the wall, especially these days. They used to use an oval lightweight conduit, many decades ago, when homes were first provided with electric lighting.
 
If you use conduit with singles, the conduit MUST enter the box.

There are bush ends available that connect onto the conduit end, and get screwed the box, with a lock nut type arrangement.

Male or female versions available.

If the hole in the box is too small for the conduit fittings, you can either:
1) replace the box.
2) attempt to make the hole bigger with a cone drill.
3) fit some sort of plastic reducer between the conduit and into the box.
4) see if there is a larger hole in the box somewhere.

As said by others, replacing the cable with T+E would have made this a far simpler job.
 
Last edited:
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Rip it out and start again....doing it properly next time
 
Right it's probably better now to use connectors wagos or strip and get some twin and earth cables...I can see how how a strip connector would work with the lines but how do I make wagos work as I have six singles
 
sparkwright said:
If you use conduit with singles, the conduit MUST enter the box.

There are bush ends available that connect onto the conduit end, and get screwed the box, with a lock nut type arrangement.

Male or female versions available.

If the hole in the box is too small for the conduit fittings, you can either:
1) replace the box.
2) attempt to make the hole bigger with a cone drill.
3) fit some sort of plastic reducer between the conduit and into the box.
4) see if there is a larger hole in the box somewhere.

As said by others, replacing the cable with T+E would have made this a far simpler job.
Click to expand...
No problems fitting the conduit and using female or male on the back box on one end but as you can see their is an old box that seems too tight of a fit to squeeze 20mm conduit I might try and drill it to expand as you suggested or use connectors and fit them in the back box then I don't have to use conduit.
 
Harry Bloomfield said:
You are using entirely the wrong sort of cable for the job, you should be using twin and earth cable, which is oval, usually with a grey outer, usually just capped with plastic or galv channel - which minimises how deep it needs to be in the plaster.

You were told the singles is normally used in conduit, because that is how it is normally used, but round conduit run on the surface. It is not usually sunk in the wall, especially these days. They used to use an oval lightweight conduit, many decades ago, when homes were first provided with electric lighting.
Click to expand...
I would much prefer twin and earth cables as I did not have to chase in that much of the wall
 
I can understand why, it's almost like the advice is being ignored. Either do it right or get someone else to do it right
 
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