Joining 2 pieces of flexible corragated tubing?

[dubman]

Hi, I was wondering if it's ok to join 2 pieces of plastic tubing for cable in the wall. I left a length of tubing about 5 mm short of a built in socket. Is it ok to add, say 3 cm of tubing, using plastic insulating tape? The tubing is for twin and earth cable. Thank you.

 

[daiplayer]

Is it possible to put some conduit in place of it ?

 

[Deleted member 26818]

What's the purpose of the plastic tubing?
Is it necessary?
Will it still serve it's purpose if you add a bit onto the end?

 

[Spudnik]

Agreed^^^

 

[Adam W]

5mm? Will it not stretch that far? I'm not sure I'd try to put t&e down flexible tubing though.

 

[daiplayer]

oh !!!! 5mm ???????? thought you said 5cm, ......lol...who would worry about 5mm ?

 

[MarkieSparkie]

Hi seanog, Best of luck pulling T+E in flexible corrugated tubing mate, I hope you have a short run otherwise you could have difficulty. I think that you will find it was not your best design choice. :banghead:

Extending the flexible conduit should not be a problem. If you have the helical type conduit just warm the piece to be added in hot water to soften the plastic and screw it on to the existing end. If on the other hand you have the parallel ridge type again warm the piece to be added in hot water and push fit ensuring at least 3 ribs over-lap.
The small amount of water is not usually an issue in my experience, but you may wish to allow 24 hours for evaporation before 2nd fixing.

 

[madmac]

Seanog, as has been pointed out already T&E can be buried or ran in walls as long as it is ran in safe zones. The relatively new practice and IMHO BAD practice, of using pvc rigid or flexible containment either buried or inside walls, gives absolutely NO mechanical protection and can't even provide any extra earth protection if pierced by a metallic object! Flexible conduit in walls (Kopex), is the labourers favourite choice of containment and a good electrician wouldn't even consider using it or altering it as it is a waste of time and not designed for this type of application!!!

 

[malcolmsanford]

Seanog, as has been pointed out already T&E can be buried or ran in walls as long as it is ran in safe zones. The relatively new practice and IMHO BAD practice, of using pvc rigid or flexible containment either buried or inside walls, gives absolutely NO mechanical protection and can't even provide any extra earth protection if pierced by a metallic object! Flexible conduit in walls (Kopex), is the labourers favourite choice of containment and a good electrician wouldn't even consider using it or altering it as it is a waste of time and not designed for this type of application!!!

There is a house I know in a village near me that was rewired in the 80's completely in kopex and singles, all flush, granted it was done this way as that was all that was available in the stores at the time.

Every light drop was red/yellow, the upstairs ring was blue/black, downstairs red/black, wonder if this has ever had a PIR done on it, and would love to see the look on the inspectors face if he was under 45 ................

 

[Adam W]

There is a house I know in a village near me that was rewired in the 80's completely in kopex and singles, all flush, granted it was done this way as that was all that was available in the stores at the time.

Every light drop was red/yellow, the upstairs ring was blue/black, downstairs red/black, wonder if this has ever had a PIR done on it, and would love to see the look on the inspectors face if he was under 45 ................

What was the idea behind the wacky colours? I've seen 1970s and 80s installations which use yellow and blue as the phase colours, but i can't imagine a house would be 3 phase.

 

[dubman]

Thanks for the help. I appreciate it.

 

[malcolmsanford]

What was the idea behind the wacky colours? I've seen 1970s and 80s installations which use yellow and blue as the phase colours, but i can't imagine a house would be 3 phase.

1.5mm and 2.5mm was not a size used very often and simple answer was there was not enough red for the job so the "phase" colours were used. If I remember right I think a couple of the ring final legs were done in 4mm, but that maybe the mist of time muddling me.

I won't name the village, and I would imagine the houses have been rewired since but several were wired in MICC as well

 

[mogga]

There is a house I know in a village near me that was rewired in the 80's completely in kopex and singles, all flush, granted it was done this way as that was all that was available in the stores at the time.

Every light drop was red/yellow, the upstairs ring was blue/black, downstairs red/black, wonder if this has ever had a PIR done on it, and would love to see the look on the inspectors face if he was under 45 ................

"Scottish Special housinjg association " houses built in the 80s had n octopus looking thing of Kopex ( metal type) basicaly it was premade in factory laid in place then concrete poured round the mould for the house NOFINE was the concrete an absolute Barsteward of a stuff to get a fixing in and the kopex is a right royal pain as the ring runs in n out of the central box

There was something about "modular wiring systems in P/E/ a couple of months back sounded similar to this but updated :S:S Ruddy penny pinchers at it again