Fitting a double dimmer switch.

[Knightsnovice]

Hi all,
Im after some help please? I'm trying to replace a double light switch with a double dimmer and seem to be having trouble. I have added the existing wiring and the back of the existing switch. Then a picture of the back of new dimmer switch. Tried like for like but no luck. Any advice would be greatly appreciated. Thanks

 

[flameport]

Common on the old switch is the wavy line on the new switch, 2 & 3 are L1 and L2.

Your existing switch is still 2 separate switches but they are arranged like this:

rather than having all 3 terminals in a line as with the new ones.

 

[Knightsnovice]

Thank you. That makes a bit more sense now. Will have another look in the morning when I have light. Thanks again

 

[Joazinho]

Good Afternoon All

Pretty similar to the above I am changing a standard double switch to a standard dimmer switch. Stansard double is much like the pic above (it's an MK) with a Common L1 L2 across the top and L1, L2 and Common across the bottom.

Looking at the split I essentially swap the Common around on the new dimmer configuration?

Thanks

Joazinho

 

[EFLImpudence]

Stansard double is much like the pic above (it's an MK) with a Common L1 L2 across the top and L1, L2 and Common across the bottom.

Sort of - there are two triangles -

Just transfer the wires but do not mix them up.
The dimmers are likely to be both the same way up - not one upside down.

 

[Joazinho]

Many Thanks - when I wired it up yesterday I matched it exactly per the old fitting and it didn't work as I have now learnt that there is a split as per your pic and they should be wired as per above. I will give it a go tomorrow night - Thanks in advance

 

[securespark]

The cable with the Red Yellow Blue is for one switch. The Red Black goes to the other one.

In both cases, the reds are the commons (or wavy line with arrow.)

Yellow & Blue goes to L1 and L2 of the switch with the red from the same cable.

Black goes to L1 of the other switch with the red from the same cable.

 

[ban-all-sheds]

I have now learnt that there is a split as per your pic

You would have known that already had you paid attention to the markings on your switch:

 

[ban-all-sheds]

The cable with the Red Yellow Blue is for one switch. The Red Black goes to the other one.

In both cases, the reds are the commons (or wavy line with arrow.)

Yellow & Blue goes to L1 and L2 of the switch with the red from the same cable.

Black goes to L1 of the other switch with the red from the same cable.

Joazinho doesn't have cables with those colour cores....

 

[Joazinho]

You would have known that already had you paid attention to the markings on your switch:

Ben-All-Sheds

I did - but most likely naively. The top was Common, L1, L2 and the bottom was Common, L1 and L2 I just patched them as is to the dimmer (I labelled them for brevity and my sanity). I'll give it a go in a couple of days when I get some time. One switch controls the hall lights and the other the stairs and upper landing - the stairs and upper landing can be switched off and on from the upper landing floor

Thanks in advance

 

[securespark]

Joazinho doesn't have cables with those colour cores....

No, that's right.

Strangely enough, my comment was directed to the OP.

 

[ban-all-sheds]

Mmmm.

I doubt that, 6 months on, he is still wondering what goes where...

 

[flameport]

Threads over 3 months old should be locked automatically. Or at least only open for those who have already posted on them.
The big red warning doesn't work.

 

[ban-all-sheds]

But then we wouldn't be able to poke fun at each other for not noticing the date.

 

[Joazinho]

Thank you all for your help I fitted the switch perfectly yesterday and all working