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Old 16 May 2005, 09:37 AM   #1
RoShamBo
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Default Do I need a twin dimmer ??

I have 2 light switches at both ends of the landing - both single switches that switch on the 3 wall lights together, on/off.
I want to fit a dimmer & took the switch off last night.
There are 2 groups of wires coming into the switch, red/earth/blue/yellow in each group.
Reds are together & blanked off.
Earths are together & earthed
1 blue & 1 yellow go into 2 L1 points
1 blue & 1 yellow go into 2 L2 points

Do I need a twin dimmer ? Or a single dimmer on each switch ? If so can anyone say how they should be wired (same goes if a single dimmer will do)
I want to be able to dimm/turn on/off all 3 lights together, not separate, though dont mind if i do need a double dimmer & can operate them independantly.

Cheers

R.
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Old 17 May 2005, 03:02 PM   #2
dsmith
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hmmm

Do they currently operate in a full 2way style. I.e. regardless of whether the light is currently on/off, either switch will turn the light on (if its off) or off (if its on) ?

Do the 2 switches look like the diagrams on here ?
http://www.diydoctor.org.uk/projects...d_switches.htm

Your description sounds like the middle switch of a 3-way setup :~
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Old 17 May 2005, 03:40 PM   #3
David_Wallis
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Quote:
Your description sounds like the middle switch of a 3-way setup :~
no it doesn't. Technically speaking the middle of a three way setup is an intermediate switch, but I know what your getting at
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Old 18 May 2005, 03:08 PM   #4
RoShamBo
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On that website, there is a block of 5 colour diagrams near the bottom. My switch is exactly like the one second from bottom of that block of 5, so a 3 way.
Yes either switch will turn the lights on/off.
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Old 18 May 2005, 03:24 PM   #5
RoShamBo
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Ahhh actually one of them does, the other one at the other end of the hall I dont know cos I didn't remove it. That one is a twin switch, one side operates the above mentioned lights, on/off just like the single switch, & the other side operates a light in a side closet.
The light in the side closet, operated by one side of the twin switch, is basic on/off just from that one switch, no other switch operates that light.
My head is hurting now.
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Old 18 May 2005, 07:16 PM   #6
sparkykev
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On a 2 way circuit you only replace one of the switches with a dimmer, in your case replace the one gang switch, the terminal markings on the dimmer, should be the same as the old switch that came off.
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Old 29 May 2005, 01:05 AM   #7
Dalthegooner
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Default Where to fit the dimmer

Quote:
Originally Posted by RoShamBo
I have 2 light switches at both ends of the landing - both single switches that switch on the 3 wall lights together, on/off.
I want to fit a dimmer & took the switch off last night.
There are 2 groups of wires coming into the switch, red/earth/blue/yellow in each group.
Reds are together & blanked off.
Earths are together & earthed
1 blue & 1 yellow go into 2 L1 points
1 blue & 1 yellow go into 2 L2 points

Do I need a twin dimmer ? Or a single dimmer on each switch ? If so can anyone say how they should be wired (same goes if a single dimmer will do)
I want to be able to dimm/turn on/off all 3 lights together, not separate, though dont mind if i do need a double dimmer & can operate them independantly.

Cheers



R.
Is there a third swich that controls these lights down/upstairs maybe as the connections you explain are for an intermediate switch and you can't fit a dimmer on an intermediate switch. You will be able to fit one at the other end of the landing, either a two gang dimmer which will allow you to dim the wall lights and the cupboard light or a grid switch (You buy the individual switches and front plate and fit them together, Its easier than it sounds) with a dimmer for the wall light and a one way switch for the cupboard light
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Old 29 May 2005, 01:05 AM
 
 
 
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