Sorry copied and pasted from your post. I assumed it must have been in amendment 1 which I never bought.
I doubt that anyone would argue with that. It is, however, worth noting that the instructions do say:
That means that for the hazard you describe to arise would require a fault in the primary insulation AND appreciably wetness of the the overlying flooring (despite being in a 'dry location) AND someone with bare feet (not in a bathroom etc.) AND for them to touch something earthed to all occur simultaneously.
Yes, you're right - it was a typo of mine that confused you. My apologies - I'll give my typing fingers a reprimand
Several people (but not RF, the OP) have talked about tiles, but the manufacturer's instructions for RF's ufh say:
.. no mention of tiles ... and, as I've just written in another post, the instructions also say that it must only be installed in 'dry locations'.
Indeed, and I now see that I didn't make the point which was in my mind very clearly! I was wondering whether, in addition to the earthing issues, the installation was perhaps non-compliant because it had been installed under tiles, seemingly in contravention of the MIs. Indeed, if tiles/tilers indicate that it was not a 'dry location', then the installation is probably at least doubly (probably trebly!) non-compliant!
OK - so that's one non-compliance (with the MIs) you don't have.
That's an interesting one! - is a kitchen a 'dry location' (per MIs) or not? I would personally be inclined to say 'no', for the reason you give. However, if you were to think the same, you would never be able to 'certify' that product on a kitchen floor (regardless of the earthing issues etc.) - so you might no want to go down that road!
My view from reading that is as follows. Therefore the rest of the section 400 still applies - i.e. you can use any suitable protective measure including either automatic disconnection of supply, or double or re-inforced insulation, and apply the suitable supplementary regulations depending on that protective measure, i.e. either the supplementary 753.411... regulations or the supplementary 753.412... regulations (although you can, of course, apply 2+ protective measures if required/desired). They're only in their own chapter in Part 7 to make them easily accessible and convenient for both persons working in special locations, and those who aren't.
I'm not sure that I fully understand what you're suggesting. In particular, when do you think that 753.411.3.2 would apply? It appears to be giving very specific instructions about what has to be done if the product is supplied 'without exposed-conductive-parts', one might think 'regardless of everythong else'.
My post was not quite clear. As I read it, that regulation is supplementary to chapter 411, for Automatic Disconnection of Supply. So I would only read it if I am applying that protective measure.
Right, I now understand what you're saying and, on consideration, think that you are probably right. I must confess that I don't recall ever having read that bit at the start of Section 700 in the past.
It would, indeed, but I can't think of any other section where this would be as crucial as with Section 700. In any event, one would not have to repeat all of the 'general' section - I don't think it would need more than one little paragraph at the start of each 7xx section to underline the fact that what it contains are 'supplementary' to other sections, hence avoiding the misinterpretation - and that would have minimal impact on the heftiness of the book.
Indeed, but can you really blame people? Are there any other sections of BS7671 in which the regulations don't 'mean what they say', when taken in isolation?
As I've suggested, it's not the only way to avoid widespread confusion. I dare say I'll get flak for saying this, but IMO if a set of written regulations are such that one has to be 'trained' in order to avoid widespread misunderstanding/misinterpretation, then there's probably something non-ideal about those written regulations.
You won't get flak from me Just the opposite, I agree with you.
If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Are you a trade or supplier? You can create your listing free at DIYnot Local
