1 Gang 2 Way Dimmer

frank1976 · Posted: Fri Sep 15, 2006 6:08 pm Post Subject: 1 Gang 2 Way Dimmer

I am installing a Chrome 1 Gang 2 Way Dimmer switch. At the back of the switch I have 3 slots \\\'L1\\\', \\\'L2\\\' and \\\'C\\\'. The wires that is coming through my wall is 4 Reds, 1 Yellow, 1 Blue and 1 Green/Yellow (Earth wire i think) Can you advise me which slot these wires go into.

breezer · Posted: Fri Sep 15, 2006 6:43 pm Post Subject:

same as the old ones did. please dont say you did not note which went where

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Steve · Posted: Fri Sep 15, 2006 8:30 pm Post Subject:

frank, there is no "NORM" to connect 2-way lightswitches. You might learn something from the diagrams in the WIKI at the top of the forum, or the "for reference" at the top of electrics UK, but you do need to

a) miraculously remember how the old switch was connected, or
b) learn how to use a mutimeter and open up the other switch on the 2-way side or
c) call an electrician.

securespark · Posted: Fri Sep 15, 2006 9:34 pm Post Subject:

You need to ID the red which is in the same sheath as the Y & B.

Then you need to sort out the other 3 reds. Probability is there will be 2 lives and a switchwire.

Have you got one twin red cable and one single red?

In which case you'll need to ID the live (which red of the twin red is it?) The other red in the same cable will be the switch, and the remaining red wire may be another live looping out of switch to another (back to back?)

So try putting: Red of three core and earth cable into Common, yellow + switchwire of twin red into L1, and the two red lives and the blue into L2.

BUT ONLY DO THIS IF YOU CAN IDENTIFY THE CONDUCTORS AS I HAVE DESCRIBED. IF THEY ARE DIFFERENT, DO NOT ATTEMPT MY SUGGESTION!

THIS ALSO ASSUMES THAT THERE IS THE RED OF THE 3 CORE &E CABLE IN COMMON ON THE OTHER SWITCH, AND YELLOW IN L1 AND BLUE IN L2.

(THE L1 & L2 MAY BE REVERSED)

Yes, I know I'm shouting, but it is deliberate...

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Taylortwocities · Posted: Fri Sep 15, 2006 10:44 pm Post Subject:

Hi SS. Not shouting at customers, are we?

Its amazing, it seems, how many folk take wires off lights & switches without noting what went where. Sometimes its quite tricky to work out on site when you have years of knowledge and all the test gear. Even more tricky to do it blind, on a PC keyboard and after many glasses of Merlot! Have a good weekend.

securespark · Posted: Sat Sep 16, 2006 11:02 am Post Subject:

No, sorry to disappoint you, TTC.

I have had no alcohol for several months.
I was only shouting to warn the OP not to follow my advice unless my hunches were correct.

There was no rudeness or disrespect intended.

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As George Michael once said, "..if you're gonna do it, do it right, right?"