S
sivoodoo
Which method would you think uses the least amont of cable, looping in at the ceiling rose or at the switch?
Regards
Si.
Regards
Si.
Part P, eh? Welcome to the begining of the end of a once proud trade.
View attachment 8133
sorry you'll have to tilt your poor heads but here is the image from the AM2 notes showing feed to the switch for two way and inter lighting in twin and earth.
Look I'm not here to start an argument, it's already been started! All I'm saying is, that in addition to the 'solysta' range from Hager, that it is no longer just a 'do- not' from the old school boys, but a legitimate variation to traditional methods with it's own merits and need to be considered when designing lighting systems. There is nothing in the regs that says you can't have neutral at a switch, you just can't ONLY switch the neutral. There really are no other reasons that it can't be there.
And yes, i did misread a post on here that I replied hastily to so apologies for that. Must learn to read more carefully (lol, note to self!).
Thanks all.
to be honest my sentiments were as your own when I saw it. But you don't argue when they're the ones taking the money off you to assess you do you? I only posted this in answer to the wider debate, most fueled recently by a heated thread (was it even closed?) about neutrals at switches. This is the score, I'm a young entry to the profession, educated to degree level (not in engineering) but interested in intelligent debate. I don't make the rules. I came into the game being shown the feed to the switch method and have seen it signed off time and again. Only in time gained with other sparks to come up against this resistance to the first practice I was shown. now, years later, I've seen all sorts of methods, and I've done the 17th. Having recently read threads on this contentious topic and sat my AM2, and reading the electricians monthly publications I thought I would add (the business') two-penneth worth in the hope that clever old boys would see past the old accepted ways and embrace the new ways based on sound reason.
Regards.
Is there any such endorsement for the looping at light method?
Tin hat on![]()
I would say that they are mere examples or diagrams, not endorsements.
For the record, I don't loop at switches, I'm just playing devils advocate.
"There goes yet another nail into the coffin of our industry!! "
Not really.
Its safer, fact.
Most electrocutions occur when a DIYer switches off the switch and removes his ceiling rose believing it is dead "but I switched it off!" he says. Zap.
Its so much more logical to have the neutral at the switch. Turn of the switch and the light is dead, unless of course the missus comes in a switches it back on.
I think my first question is a bit daft anyway. It would all depend on the circuit arangements, I was just wondering and thought there may be a magical equation
Regards
Si
I'll see if I can find the IET notes for the pre- AM2 with diagram. off to walk the dog now though.
Cheers.
I presume you're referring to the NET (National Electrotechnical Training). Unless I'm missing something I can't see the connection between the IEE and the AM2.
agreed I use what ever method is best suited to what is being installed .I would have thought either method is acceptable as both employ barriers and enclosures as a means of basic protection.....
And...in the case of a new install (17th)....additional protection by RCD........agreed I use what ever method is best suited to what is being installed .
What electronic devices, and would you need a neutral at every switch in the installation?? I think not to be honest!! I don't have anything against having a neutral at the switch position, but ONLY when a neutral is needed. I would never and have never looped through switches as a matter of course. To-date, i have never seen any official body either showing wiring diagrams or describing switch looped lighting circuits or in any other way endorsing such a wiring scheme.
Unlike this bloody house we have been goin to recently.....believe me there were joint boxes in places you would not have thought possible.....we ended up virtually rewiring the gaf and all the client thought was needed origionally was a new ring for the kitchen....the further into the job we got ...the more JBs we found and they just kept on coming....and coming....and coming....at least 20-25 at last count......and all in inaccessible places too....didn`t comply with owt ...that un...........Yeah, always accesible through the first downlight hole.
If you take that line Eng54 lighting using T/E cable would be impossible other than using joint boxes. Neutrals at switches not allowed because they are not required?...Well permanant lives are not required at a light,so presumably you do not approve of looping in at lights either?...which leaves only the JB method.
The fact is neutrals used to be frowned on at switches....but nobody has ever been able to give a reason why. For that reason common sense has prevailed and neutrals at switches are just as valid as any other method.
.......Absolute rubbish!! And who said anything about neutrals not being allowed at switches? Your making things up as you go along. As for commonsense, who the hell wants to open up a switch plate to find it full of cables bunched up with connectors galore?? If you loop through a switch you will have one connector for the neutrals per circuit. If it meant keeping unwanted and certainly unneeded cables out of switch back boxes then your right, i'd certainly plumb for using modern day types of JB's over looping in switch boxes. Can't see how you could get around wiring a multiple down-lighter installation without the use of JB's anyway, no matter what looping method you used......Take the feed through the switch and loop to each light...two or possibly three cables at the switch and two maximum at each light
Let's get this straight, it's the looping thru switches that i have a problem with, NOT having a neutral connection at the switch, when it's Needed...And you have never given a satisfactory reason why,other than the wad of wires you seem to think is inevitable,but if you work it out,is actually not.
Yep...it isn`t just about whats going on behind the switch front......its getting the cables there (and back) n all in any semblance of order............Personally, I think you both have very valid points. I guess its as others have stated in that it all depends on the situation. Mind you, not that I have any experience of doing it but I'd imagine clipping three cables into every switch chase instead of one could become very tedious.
Just to add my twopenneth here eng before bedtime......we often find it can get a bit congested behind switch fronts.....so just go for a deeper box................So ....no containment at the down-lighters for the building wire loops, ...really, ...OK , lol!!!
At a single 1 way one gang maybe, but that's not always the case is it, especially in hallways/porches etc!! The last thread on this subject someone actually posted a photo of a switch looped switch, it looked as if you would need to force the dammed switch plate back into the box. So not my imagination at all!!
What you may call a satisfactory answer, is not necessarily anyone else's! I think i've made my position just about as clear as i can, if you don't agree that's fine too. I'm not telling you how to wire anything, you've been in this game long enough to decide that for yourself.
Just to add my twopenneth here eng before bedtime......we often find it can get a bit congested behind switch fronts.....so just go for a deeper box................
I almost always fit a 35mm box. I've easily managed to fit 8 cables (2* feed's, 3* switch lives and 3 3core's) into a single 35mm backbox no trouble, dress it in all neatly and it will push in like a dream
Way too much like hard work for me! How on earth do you contain 8 cables in a chased out wall? Must be a right old mission!I almost always fit a 35mm box. I've easily managed to fit 8 cables (2* feed's, 3* switch lives and 3 3core's) into a single 35mm backbox no trouble, dress it in all neatly and it will push in like a dream
So ....no containment at the down-lighters for the building wire loops, ...really, ...OK , lol!!!
At a single 1 way one gang maybe, but that's not always the case is it, especially in hallways/porches etc!! The last thread on this subject someone actually posted a photo of a switch looped switch, it looked as if you would need to force the dammed switch plate back into the box. So not my imagination at all!!
What you may call a satisfactory answer, is not necessarily anyone else's! I think i've made my position just about as clear as i can, if you don't agree that's fine too. I'm not telling you how to wire anything, you've been in this game long enough to decide that for yourself.
A perfect example!! I Rest my case!! lol!!!