metal capping not needed according to 17th

[electroyd]

I've found oval conduit to be quicker than clipping in to chases. I use capping on new/unplastered walls.

There's no sense using capping in chases as you have to make the chases so much wider.

yes it does make sense and as you put it, if the chase is nice and tight to the cables then damage is unlikely.
its quite funny how people like me get set in there ways. I also screw and plug it lol

 

[telectrix]

the makers of oval tube also make the clips to fix it with. 1 plug& screw per clip then snap the tube in. sssiimplesss.

 

[TJ Anderson]

the makers of oval tube also make the clips to fix it with. 1 plug& screw per clip then snap the tube in. sssiimplesss.

I've seen them for sale but not used them as thought they may hold it off the wall and have to chase deeper. How have you found them to be? I have always used 1 1/2 x 8 screws and reds plugs or sometimes clout nails to hold it back on edges before plastering.

 

[Guest125]

So what are you saying? That you're trolling again?

Absolutely not. I struggle with the trolling/joking difference. Sometimes texts do not come across as meant.

Really no harm meant to anyone and I hope I have made that clear by removing my comment and apologising.

 

[7029 dave]

Never used metal capping, false economy, it does not provide mechanical protection.

 

[GMES]

Yeah it's never going to stop a nail when this is what's used to secure it in the 1st place, I think a lot of newbies forget that small detail!!

 

[R G]

I also have never used it , what use is it , cables have to be run in prescribed zones , pvc oval capping is what I use, see no use for it myself...

 

[123]

Pit is not meant to, right?

So what's the point in it other than to waste dollars on it?

 

[davesparks]

So what's the point in it other than to waste dollars on it?

The point of capping is to stop cables being damaged by the plasterers when they spread their muck around.

 

[R G]

One thing I have noticed when I have seen it is the very sharp edges on the ends of the capping , not good , when I noticed it already in place I had to bend the edge outwards and tape the edge up , I would and never have used it ...

 

[Jay Sparks]

The odd time I have used it, due to it being part of someone else's spec, I normally double over about two inch on both ends of the capping, this gives a smooth edge. Other than that, I don't use it. Don't see the point.

Jay

 

[SPARTYKUS]

Csn't believe theres another thread about this....

The only time I think it is warranted is if the wall the cables are being clipped to is going to be plastered DIRECTLY onto the wall.

Dot and dabbed, then no point.

cutting a groove and rewiring, as has been said, no point.

Nowt to do with mechanical protection, or for detectors. You get plastci capping.

it is just to stop the spreads trowel damaging the cables!

The lack of knowledge of that small point still astounds me, not just in our trade but also decorators, builders, plumbers, chippies, I even explained to (admittedly the best Ive ever met) a builder once as he was adamant it should be there and he still walked off muttering

"well I like to see it....."

well he wasnt paying for it or the extra time required for its completely pointless installation.....

 

[shanky887614]

How do you guys fix the oval conduit to the wall? I have never used it and tend to use capping on jobs where i don't know the plasterer and when working along side a couple of plasterers i know locally then as Trev said, i prefer and they prefer a small neat chase!

conduit and use crampets to fix to the wall, quicker than capping.

 

[Anthony S]

conduit crampers, quicker than capping

Last time I used them they were Crampets ? lol

 

[shanky887614]

Last time I used them they were Crampets ? lol

fat fingers on tapatalk lol

 

[Tidy Max]

Any form of nail knocking brick bashing activity is bound to give me a head ache, whenever i use capping i don't even bother with the capping nails at all, i have a small tub full of 1.5" 8s with penny washers on and red plugs, capping on the wall, sharpie down each side, 6 x hammer drill, plug screw job done.

What are those crampets like at sticking in a wall?

 

[shanky887614]

Any form of nail knocking brick bashing activity is bound to give me a head ache, whenever i use capping i don't even bother with the capping nails at all, i have a small tub full of 1.5" 8s with penny washers on and red plugs, capping on the wall, sharpie down each side, 6 x hammer drill, plug screw job done.

What are those crampets like at sticking in a wall?

? ---- that.

you dont need plugs in thermalite blocks screw straight in, they cut them with a woodsaw afterall

 

[Anthony S]

Crampets were designed for metal conduit so you won't be using them on capping.

 

[shanky887614]

conduit and use crampets to fix to the wall, quicker than capping.

Crampets were designed for metal conduit so you won't be using them on capping.

read again

 

[davesparks]

One thing I have noticed when I have seen it is the very sharp edges on the ends of the capping , not good , when I noticed it already in place I had to bend the edge outwards and tape the edge up , I would and never have used it ...

Just use plastic capping, it's cheaper, has no sharp edges and does the same job

 

[Tidy Max]

? ---- that.

you dont need plugs in thermalite blocks screw straight in, they cut them with a woodsaw afterall

And in two years of being on my own i have come across thermalite...twice! Once on a a job i started in December and another on a job i started last week! Everything else is @#@2~@ Accy Nori!

 

[Anthony S]

read again

I was refering to tidy max and his capping, then you got in before me and know think I'm digging you out lol

 

[Tidy Max]

I was refering to tidy max and his capping, then you got in before me and know think I'm digging you out lol

and i was referring to using the crampets with oval conduit its all a big confusing mess

 

[123]

Just use plastic capping, it's cheaper, has no sharp edges and does the same job

So again, what's the point of metal capping, other than to waste money on it?

 

[SPARTYKUS]

So again, what's the point of metal capping, other than to waste money on it?

Its just an alternative to plastic. When capping is desired (as in when the wall is going to be plastered onto the brick)

 

[Des 56]

So again, what's the point of metal capping, other than to waste money on it?

You have not included preparation,it may also need to be painted with red oxide paint before fitting

 

[123]

Although we don't use it here I know what capping is for. I just can't work out what metal capping would be for at all though, it just seems pointless.

 

[ipf]

Although we don't use it here I know what capping is for. I just can't work out what metal capping would be for at all though, it just seems pointless.

A bit like rubbish threads, I suppose.

 

[Pete999]

Last time I used them they were Crampets ? lol

What Jed Crampets lol

 

[spark 68]

What Jed Crampets lol

Hillbillies, that is

 

[Des 56]

Although we don't use it here I know what capping is for. I just can't work out what metal capping would be for at all though, it just seems pointless.

How dare you suggest such a thing !
Just wait a while and I will rack my brain to think of one!

Mmmmmmmmmmmmmm
Still thinking

Mmmmmm
No,sorry can't think of anything (however trivial the anything may be)

I think you have just sussed out that some of the means of protection that could be afforded gets muddled up by designers who believe myths rather than how to comply,now where's that pot of paint gone

 

[Pete999]

Hillbilies, that is

Showing your age, I expected lots of comments, like whats he on about.

 

[SPARTYKUS]

Although we don't use it here I know what capping is for. I just can't work out what metal capping would be for at all though, it just seems pointless.

Answer in post 64. And then again in 77.

 

[Gavin A]

So again, what's the point of metal capping, other than to waste money on it?

if you bond it to earth then it becomes an earthed metallic covering as per 522.6.101 (i).

If you don't bond it to earth then it's as much use as a chocolate fireguard, certainly doesn't class as mechanical protection against nail penetration, only protection by sending the fault current down the earth path (and probably tripping the MCB) rather than through the body of the numbnuts who's just banged a nail into the cable, or anyone else who happened to come along at a later date and touch the nail and a radiator or something at the same time.

 

[Gavin A]

I'm a little surprised to find I'm the first to make that point on page 8 of this thread.

The regulation for mechanical protection is 522.6.101 (iv), the 2 things (mechanical protection and earthed metallic covering) are different classes of protection within the same regulation for protection of cables buried under 50mm from the surface, and can be applied instead of an RCD (unless that's needed for other reasons) and / or when not running cables in safe zones.

(ps that's from the BGB, haven't got the yellow version yet)

 

[Anthony S]

I'm a little surprised to find I'm the first to make that point on page 8 of this thread.

The regulation for mechanical protection is 522.6.101 (iv), the 2 things (mechanical protection and earthed metallic covering) are different classes of protection within the same regulation for protection of cables buried under 50mm from the surface, and can be applied instead of an RCD (unless that's needed for other reasons) and / or when not running cables in safe zones.

(ps that's from the BGB, haven't got the yellow version yet)

I was thinking of conduit for some reason that's why I've edited.

But I think the metallic covering your talking about is refering to the cable ie s.w.a and not capping.

 

[123]

if you bond it to earth then it becomes an earthed metallic covering as per 522.6.101 (i).

If you don't bond it to earth then it's as much use as a chocolate fireguard, certainly doesn't class as mechanical protection against nail penetration, only protection by sending the fault current down the earth path (and probably tripping the MCB) rather than through the body of the numbnuts who's just banged a nail into the cable, or anyone else who happened to come along at a later date and touch the nail and a radiator or something at the same time.

Well that's entirely different as I wasn't aware it could be used like that.

We don't use capping here, its generally 20mm conduit although oval can be used. To the best of my knowledge no wholesalers stock capping, be it plastic or metal.

 

[Gavin A]

I was thinking of conduit for some reason that's why I've edited.

But I think the metallic covering your talking about is refering to the cable ie s.w.a and not capping.

hmm actually, looks like you're right with that regulation as all the BS's referenced relate to SWA or similar. I'm sure it complies with one of 1,2,3 of that regulation for earthed metal conduit, trunks, ducting etc. Can't see why it wouldn't as long as the capping was equivalent to the CSA of the CPC, but I'm not forking out £100 or so for mutiple BS regulations to see exactly what they say.

It's possible that technically it doesn't comply with those british standards though, but that's how we've used it on occasions where we can't use a 30mA RCD due to the leakage current of inverters. Can't see why there'd be a need to try to have to channel so far into the brick / block to get full conduit in when it only needs protecting from one direction, and isn't relying on mechanical protection.