522.6.6 & definition of a cable, and mods for a newbuild

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Went to look at a house a couple of days ago with an ageing relative. There are several under construction, so it was easy to see the different stages - and what's normally hidden alongside how they are finishing off.
Apart from the plastic plumbing installed to "average" standards, the plumbing that seems designed to catch out the unwary (plastic pipes in places I wouldn't expect them, gas pipes buried where I'd not expect them), I noted that the tails from meter in fugly box to CU are (as best I can see) not in compliance with 522.6.6 in that the bottom of the CU is above the hole in the wall where the tails come through and so there are meter tails buried in the wall (<50mm deep) with no protection.
But then I spotted something else. Now, it's been said on here that things like aerial leads don't have to be in safe zones, but I see nothing in 522.6 (or indeed, the whole of 522) exempting them. So when I see the (cheap and nasty aluminised plastic foil) aerial cables clipped up the bedroom walls (2 stories worth) above with absolutely nothing to indicate they are there once plastered in (no trunking so not repairable without ripping the house apart) - I'm wondering if 522.6 applies or not. I thought there might be something in the definition of "Cable" - but I don't see a definition for cable so I guess we have to assume the everyday use of the term which I think has to include non-power cables.
I've been asked to do a list of things that we want customising. One is to install network cables - so I really hope the builders left some gaps in the dabs as that's one of the (for me) non-negotiable bits.
I'm also wondering if an installation with no provision for "electric cooking" can be considered to comply with reasonable design standards - the only electrics are the RFC so I assume that they assume that the only power requirement is for the ignition/clock in the gas hob & oven. I'd be wanting a good induction hob - nice and easy to clean !
 
Would you consider an aerial cable part of an electrical installation?
For what it's worth, I wouldn't, but nor do I think that that, in itself, necessarily means that it's outside the scope of BS7671.

110.1.2 indicates that the scope of BS7671 includes:
...
(iii) wiring systems and cables not specifically covered by the standards for appliances.
...
(v) fixed wiring for information and communication technology, signalling, controlling and the like ...

I'm not sure whether one should regard any of that (particularly the "...and the like"!!) as encompassing areial cables!

Kind Regards, John
 
I would say TV's come under the definition of IT:

"the study or use of systems (especially computers and telecommunications) for storing, retrieving, and sending information."
 
And while on the subject of "is it, isn't it" ...
Earth bonding cable to the water supply point - plastic service pipe, so no extraneous conductive part, so bonding not required. BUT, I've read a few comments on here of "inadequately educated plumbers" refusing to service boilers etc without it being there. So on a new-build, is it worth mentioning ?
 
To who?

Many modern boilers have a metal plate to which all the pipework attaches, making supplementary at the boiler pointless.
 
To who?

Many modern boilers have a metal plate to which all the pipework attaches, making supplementary at the boiler pointless.

Indeed - Worcester for one. But the installers still did it on mine and when I asked why they said "our electrician says it's required". I couldn't be asked to argue the point! :(
 
BUT, I've read a few comments on here of "inadequately educated plumbers" refusing to service boilers etc without it being there. So on a new-build, is it worth mentioning ?
As has been asked, 'mention it' to whom? Whatever, I wouldn't 'mention it' to anyone, but, rather, would probably look for an "adequately educated plumber".

Kind Regards, John
 
I'm not as good as John at knowing what is meant when not written clearly, so -

Is what worth mentioning?
 
I'm not as good as John at knowing what is meant when not written clearly, so - Is what worth mentioning?
Yes, that too. From the context, one assumes that the issue he was considering 'mentioning' (to someone) was that of some plumbers approach to 'unnecessary bonding', but what he was considering saying about it is another matter!

Kind Regards, John
 
I took it he meant mention it to the housebuilders in regard to the fact they have run a Main water bond, to where theres a main incoming water pipe, hence no Extrauneous Metal

Shop I was in today had plastic supply pipe, then 6inch of metal, a metal stopcock, then back to plastic, the Main bond was on that section of metal pipe, which I think we all agree is pointless
 
Shop I was in today had plastic supply pipe, then 6inch of metal, a metal stopcock, then back to plastic, the Main bond was on that section of metal pipe, which I think we all agree is pointless
I think we do. However, the way in which the regs are written is such that I can't really blame anyone for believing that main bonding is required by those regs, even if there is no electrical reason for it!

Kind Regards, John
 
Rocky's example definitely should not be bonded; it is just introducing a hazard.


What I'm not clear about is:

And while on the subject of "is it, isn't it" ...
What?

Earth bonding cable to the water supply point - plastic service pipe, so no extraneous conductive part, so bonding not required.
True, but if all copper inside premises it doesn't introduce any more hazard.

BUT, I've read a few comments on here of "inadequately educated plumbers" refusing to service boilers etc without it being there.
I have myself come across them but the bonding is not required nor necessary.

So on a new-build, is it worth mentioning ?
Is which bit worth mentioning?
 
Rocky's example definitely should not be bonded; it is just introducing a hazard.
True - but hardly even a significant hazard, since the only hazardous thing being created would be 6 inches of metal pipe (plus a stopcock) !! So, not really significantly hazardous in this case - just totally pointless.

The thing that the regulation doesn't make clear enough is that it is only talking about extraneous-c-ps - so, if there isn't one, there is no need to bond anything. However, as you know, it then goes on to get even sillier by saying that, if one does have an extraneous-c-p, one should bond it on the customer's side of an insulating interruption (if there is one) - which clearly indicates that the person who wrote it didn't have a clue as to what main bonding is all about!

Kind Regards, John
 
Yes, quite agree.

Like cables concealed <50mm. must be RCD protected - automatically makes DIYers think "I must go deeper".
 

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