Because in the two diagrams which have coloured wires, the "L" and "SW.L" labels appeared to have been swapped into the wrong places.Why
Kind Regards, John.
Which is live wire?
- Thread starter Frankie14
- Start date
A
Alarm
At least here, if found wrong ( and not your fault you followed the other diagram), it does not end in a argument 
Well done lads.
Well done lads.
P
Paul_C
Indeed, I find it incredible that so many people are arguing about which is the "correct" way round when there simply isn't one. Supply to com. and light on L1 or supply to L1 and light on com. - It doesn't matter!
As for the diagrams on the various manufacturers' leaflets, they're merely representative of how the switches can be used. They don't have to be wired exactly as shown.
In those MK diagrams, for example, for both the traditional and the alternate 2-way arrangements the diagrams show L1 to L1 and L2 to L2 on the switches. But if you swapped the L1 and L2 connections at one end, it would still work perfectly well, the only difference being the relative positions of the two switches for the light being on and off (i.e. both switches up or down for off, or one switch up and one down for off).
Then there is the diagram with an intermediate switch for control from three positions. There's no diagram which shows the use of a second intermediate switch to control a light from four positions is there? So is anyone going to say it would be "wrong" to do that just because the arrangement isn't shown?
Besides, take a look at the note at the bottom of the diagrams for the Albany Plus range and what do you see?
Yes that drawing is correct, but I was and still am refering to this claim below
You was obviously talking about a switch with L1 and a common terminal and assuming the red was Live
Well when you do fault finding on large single red wired installs in trunking it does help a lot if you have to trace the live supply and you know what wire it is
A
Alarm
One has line in L1 the other C.
The C is the switched, and it is called a switched line isnt it?
The C is the switched, and it is called a switched line isnt it?
Thank you, and can you spot the diference between that drawing and the other one as clearly noone else can.
A
Alarm
Thought I just had 
P
Paul_C
True, there may be good reasons such as this for being consistent within an installation (along with things like consistent use of redyellow/blue or brown/black/gray for 2-way wiring, etc.). But you can consistently put the feed to C and use L1 as the switched output or vice versa without it making any difference.
As there is nothing which evenly remotely resembles a convention (even a loose one), even if you know that the C/L1 terminals have been wired consistently, you would still need to check which is which for that particular installation.
P
Paul_C
I've lost track here - The difference between which two?Thank you, and can you spot the diference between that and the other one as clearly noone else can.
As Paul has just implied, there is actually a potential hazard associated with such conventions, since they tempt people to make potentially dangerous assumptions. Although I'm sure you don't really mean it, what you've written above almost implies that you might make assumptions on the basis of what convention you thought had been adopted - and, as we all know, one can never assume. Even G/Y cables have been known to be used as live conductors!
Kind Regards, John
quite right I would not assume, it would be nice if everyone was the same, but i would follow the L connected back first before the common, but obviously if some of the blokes here wired it I would end up at the light rather than DB
I give up now, all i wanted was to see this MI from pbod with the switchline in L1 or L2 on a one gang switch as i have never known or seen it, i know its all irrevolant realy but i like someone to back up there claim.
Maybe one day
I give up now, all i wanted was to see this MI from pbod with the switchline in L1 or L2 on a one gang switch as i have never known or seen it, i know its all irrevolant realy but i like someone to back up there claim.
Maybe one day
Yep I still stand by that
- Joined
- 11 Jan 2004
- Messages
- 45,897
- Reaction score
- 3,522
- Country
Anybody got any more popcorn? I've run out.... 
DIYnot Local
Staff member
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
