t&e outside

[RF Lighting]

 

[ericmark]

We all know twin and earth should not be used outside. However the grey colour was to emulate the orignal lead that this was made with and that would have been OK outside and of course covered in earthed lead it would have been very like the Ali-tube cable we use today.

The plastic twin and earth is a cheap cable and I have only seen it used in domestic. Maybe shop fitting as well but you would not find it on the factory floor.

I would like to see Ali-tube replace it but price is the problem. It's cheap and nasty like many domestic products.

 

[mfarrow]

I've seen that too - it's probably been up there for 30 years. It'll be fine under the cracks.

 

[Adam_151]

The plastic twin and earth is a cheap cable and I have only seen it used in domestic. Maybe shop fitting as well but you would not find it on the factory floor.

Unfortuntally you do see it on factory floors these days, often with inadequate protection against damge for the location in which it is installed.

And it is now a main-stay of commerial instalallation, whereas in older installations it would be trunking and conduit. More often these days its basket tray above the ceiling loaded with twin and earth. Theres are pros and cons of it, but I suppose its easier and cheaper to install, easier and cheaper to modify and thats why its done

 

[PrenticeBoyofDerry]

Quite often come across flat grey t&e or even three core & E, used on outside lighting. Some I have seen has been in place for years with very little adverse effect.
Was recently working on a newish built estate (built in last 10-15 years). Some of the external lighting looked like it has been in place since construction of the house and all run the same on each house, in flat grey t&e.

 

[seasickstevie]

My dad installed an underground feed to our shed in PVC T&E in about 1970.
When I started my electrical apprenticeship shortly after I soon realised that the PVC was not good enough, so before my dad concreted the yard, I dug up the trench again and laid 2.5 Pyro. However being a young lad with other things on my mind, I never got around to connecting it up.

Many times over the years, I've though 'Why did I bother? The PVC's lasted fine'
However just in the last couple of weeks, the RCD (installed in the '90s as a precaution) has tripped a few times.
I've now unearthed the ends of the micc, and will connect up as soon as I can remember where my Pyro tools are.

Not bad for being in damp soil for 40 years.

 

[jeepmadmike]

My garage was supplied with T&E

It was only 2.5 and I was planning on replacing it once i rewired the man cave

Before this i decided to earth loop the sockets and had rather big numbers

CPC was several ohms, loop at source wasn't and the route wasn't far......

That's why you don't run T&E underground!

I really like NYYJ cable but most have never heard of it.

 

[RF Lighting]

Not sure that NYY-J is suitable for direct burial...

 

[jeepmadmike]

Sorry I wasnt thinking of it for underground use but for general outdoor use it's great and it's not exposed to mechanical stress

 

[securespark]

Not bad for being in damp soil for 40 years.

Have you connected it up?

You'll have some ingress of moisture for sure, after 40 years.