I use Hager switches.Hi,
Why do people tend to use by way of terminals when looping in at switch? My default are the 16amp translucent terminal blocks.
They do. I have to say that, in the context of a DIY forum, those switches worry me a little. With 'conventional switches' one can be confident that no matter what instructions are given (and perhaps misunderstood or disregarded) as regards what to do with the connections to the switch, the worst that can happen is incorrect (or no) functionality - and the same is true of those oft-maligned DIYers who take a 'trial and error' approach to the permutations of 'which wire goes in which terminal'. However, when one of the wires going into a terminal is a neutral, there is clearly plenty of scope for some 'bangs'.He means Hager switches have an extra terminal for 'parking' the neutrals.
I don't really see what difference it would make. A ceiling rose is the same. If they're gonna mess it up, they're gonna mess it up. It's well labelled and isolated. Unless they put the N into SL (that could happen if there was no N loop) nothing is gonna happen.It might have been 'safer' if they had included a neutral terminal which was clearly distinct (ideally physically separate) from the switch terminals in the main switch body, rather than having it looking like any of the other switch terminals.
It's obviously true that they can mess anything up (be it a switch, rose, plug or whatever), but I do think that (when there is a neutral loop) the Hager switches make it a bit easier for them to do so (or "... so to do" if EFLI is watching!)! Apart from anything else, what we see here seems to suggest that the practice of 'trying all permutations' of conductors into identical-appearing terminals is more common with light switches than with anything else.I don't really see what difference it would make. A ceiling rose is the same. If they're gonna mess it up, they're gonna mess it up.
I'm not sure I fully understand that bit in brackets. In the absence of N looping, there wouldn't normally be an N present, would there?Unless they put the N into SL (that could happen if there was no N loop) nothing is gonna happen.
That's true, but other manufacturers might start following suit - since N looping seems to be becoming more fashionable, and there is no doubt that such switches make for a neater job in the hands of those who know what they are doing.I also suspect DIYers are less likely to use Hager, as I am yet to see them stocked anywhere but a wholesaler
Probably true but, in this case, I think that the design we are talking about also makes it more likely that some of those who "do have a clue" will, as a result of 'human error', create a bang (hands up every electrician who has never put the wrong conductor in the wrong terminal!!).A switch may be fairly simple but I don't think, in general, manufacturers design their products in such a way that those who haven't a clue can fiddle with them safely.
I'm not sure that is necessarily a very good example/analogy. 25 or so years ago, I would have agreed with you - but I think that if you took the back off a more recent TV, you'd probably be very hard-pressed to find anything hazardous to touch. They might mess the TV up by fiddling, but I doubt that it would be 'unsafe'.Take the back off a TV.
Yes, up with such things I shall not put.(or "... so to do" if EFLI is watching!)
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