in the flat i rent at mo

[i=p/u]

the cable feeding my cu looks like it is all in one, with one 10mm line , 6 x 15mm neutral and 4 x 4mm cpc,

now it seems like it aint a complete cable but i bet you it would of been awkward to fill the sheath like this...

anything to say knowledgable souls..

if i can find camera lead il upload in a min

 

[Knobhead]

The live and the two earth/neutral bunches should have heat shrink. Followed by a trifurcating boot shrunk over the cable crutch. So yes it deserves a code ? ? ? ?

Trifurcating, now there’s a word to play with :icon10:

 

[i=p/u]

well il not play with that word cause i never heard it before

 

[Knobhead]

Have a look in the OED it's there :joker:

 

[Engineer54]

Concentric cable is not a cable that most electricians would have any use for, or come accross too often, except seeing them at DNO service cut-outs. Which is why when they do need to terminate one, they tend to make a pig's ear of them...lol!!

 

[i=p/u]

so is reg 521.10.1 the one covering this, what code would you say id say c2

as for that word tony it comes up about artieries in the body

 

[rich.250]

As far as I understood, concentric used to be able to be buried as swa pre 17th edition.
Now it would need to have additional protection, as has been said.
As for coding, was it compliant when installed? Although looking at the pic that needs a code on its own!!

I remember when I was a first year apprentice doing caravan hook ups in 19 mm split concentric. LOL....

 

[Engineer54]

As far as I understood, concentric used to be able to be buried as swa pre 17th edition.
Now it would need to have additional protection, as has been said.
As for coding, was it compliant when installed? Although looking at the pic that needs a code on its own!!

I remember when I was a first year apprentice doing caravan hook ups in 19 mm split concentric. LOL....

Not as far as i can remember they wasn't!! The DNO however have there own set of rules an Regulations. But even then i've often seen these cable run in ducts when they bring them into properties from the main cables joint.... They have after all, no mechanical protection whatsoever!!

 

[Jel]

Whats the point, why would you use this?

 

[rich.250]

Maybe I understood wrong previously. Yeh additional protection required under 17th and before aswell. Thanks E54.
There is no real advantage of using this cable over t and e.

 

[Guest112]

ive used a lot of this cable in the past the stuff ive used is the orange split con or wave con as some call it,
definately on the supply side its used, the stuff i used was the aluminium stuff not nice to pull in when your pulling in the 4 core 300s lol but at this size the outer cores are only used as the earth but the way its made off is completely different we were taught to shape the earth cores (into the feeder pillars and to the cut outs/distribution boards) into a sort of bird cage and then form them together using tape before connecting into the snap off terminals then the panels have wooden clamps to hold the cable in place as they enter the feeder pillars,

the smaller sizes are nice to make off the main annoyance being that you have to strip each individual neutral core the same length before terminating into the neutral block, we also had to use this metallic compound on the aluminium cable ends to prevent the aluminium oxidising at the connection creating bad resistance,

overall id say cheap and nasty way of doing supply cables imo

 

[Guest112]

Maybe I understood wrong previously. Yeh additional protection required under 17th and before aswell. Thanks E54.
There is no real advantage of using this cable over t and e.

just cost probably

 

[Jel]

ive used a lot of this cable in the past the stuff ive used is the orange split con or wave con as some call it,
definately on the supply side its used, the stuff i used was the aluminium stuff not nice to pull in when your pulling in the 4 core 300s lol but at this size the outer cores are only used as the earth but the way its made off is completely different we were taught to shape the earth cores (into the feeder pillars and to the cut outs/distribution boards) into a sort of bird cage and then form them together using tape before connecting into the snap off terminals then the panels have wooden clamps to hold the cable in place as they enter the feeder pillars,

the smaller sizes are nice to make off the main annoyance being that you have to strip each individual neutral core the same length before terminating into the neutral block, we also had to use this metallic compound on the aluminium cable ends to prevent the aluminium oxidising at the connection creating bad resistance,

overall id say cheap and nasty way of doing supply cables imo

That's sounds like a headache!

 

[Guest112]

That's sounds like a headache!

haha definately very repetative after a while too

 

[ringer]

View attachment 10757 here it is

So how would you describe the system earthing arrangement on this? Assuming you have no way of knowing what is on the other end of this cable. TN-S? Or will there be a supply head nearby before the coin meter?

Would those black boxes contain the supplier's fuse? If so, what would you put down for supply protective device?

 

[Knobhead]

Before you carry on, please find out about Split concentric.

A/ the outer cores are not armours they a conductors in there own right.
B/ the DNO’s use concentric NOT split concentric.
C/ it is treated as Lenny pointed out just the same as T+E

It’s nice stuff to work with. IF YOU KNOW WHAT YOUR DOING!