Wiring Advice for 2G 2W light Switch

jaybee2 · 14 Apr 2010

Hi fellow members

Hope you can assist bought new 2 way 2 Gang switch unclear as to wire the new one.

Old switch controls one hall light and two other lights top and bottom of stairs but as you can from picture of existing switch a link wire is used.

Advice on how to wire new switch please. Thanks in advance.

J

Untitled

jaybee2
14 Apr 2010
1

new one

Untitled

jaybee2
14 Apr 2010
1

old one[/url]

1john · 14 Apr 2010

swap the switches over one terminal at a time, all terminals chould be marked, look out for

C / common

L1
L2

i suspect the link will go from one C on one switch to the C on the 2nd switch.

jaybee2 · 14 Apr 2010

jaybee2 said:
Hi fellow members

Hope you can assist bought new 2 way 2 Gang switch unclear as to wire the new one.

Old switch controls one hall light and two other lights top and bottom of stairs but as you can from picture of existing switch a link wire is used.

Advice on how to wire new switch please. Thanks in advance.

J

Untitled

jaybee2

14 Apr 2010

1

new one

Untitled

jaybee2

14 Apr 2010

1

old one[/url]

Is it the case on old switch the 2 Gangs are opposite directions compared to new one.

ColJack · 14 Apr 2010

1john said:
i suspect the link will go from one C on one switch to the C on the 2nd switch.

#

no it won't ...

the link goes from the red in the 3 core and earth which is in the L1 ( or L2 ) terminal of one switch, to the common of the other..

your existing switch is 2 triangles, one upside down to the other.. ( as can be seen by the diagonal line on the back of the switch.. )

the yellow goes in one com, the blue from the same cable to L2, the red form the same cable to L1 ( and linked to the other com )
then your other cables go in L1 and L2 of the other switch..

and don't forget a link from the earth in the backbox to the switch plate itself..

sparkwright · 14 Apr 2010

Look on the back of the old switch.

Observe there is a line dividing the back into two sections (for two switches).

You will notice the common terminal is at one end on it's own for each switch.

The common is on it's own at each switch on the new switch too.

ColJack · 14 Apr 2010

View media item 21579
quick and dirty, but a picture paints a thousand words so the say..

( the earth is for illustration only, you need to run a fly lead from the backbox where bote earts are already connected. )

jaybee2 · 14 Apr 2010

ColJack said:
View media item 21579
quick and dirty, but a picture paints a thousand words so the say..

( the earth is for illustration only, you need to run a fly lead from the backbox where bote earts are already connected. )

It may be quick and dirty, thats the best kind lol, many thanks it does the trick

Do I still need to earth the plate as the screws will connect the plate to back box

securespark · 14 Apr 2010

Yes.

Best to take the cpc to the box terminal, then another to the switch plate.

That way, it's all securely earthed even with the switch off the wall.

sparkwright · 14 Apr 2010

You must earth the metal faceplate with a flylead and not rely on the fixing screws, if the faceplate was loosened off for decorating etc, it would no longer be earthed.

333rocky333 · 14 Apr 2010

Good practice to do it.

ColJack · 14 Apr 2010

jaybee2 said:
It may be quick and dirty, thats the best kind lol, many thanks it does the trick

Do I still need to earth the plate as the screws will connect the plate to back box

and once you remove those screws and pull the switch forward a bit to paper round it while it's still live ( we've all done it / seen it done ) and one of the wires falls out of a terminal and contacts the metal face plate?

ColJack · 14 Apr 2010

securespark said:
Best to take the cpc to the box terminal, then another to the switch plate.

is it still a CPC once it's terminated at the backbox?
the flylead would surely be a bonding conductor?

securespark · 14 Apr 2010

OK, whatever! And they call me a pedant at work....

Taylortwocities · 14 Apr 2010

securespark said:
OK, whatever! And they call me a pedant at work....

Is that a low energy pedant?

securespark · 14 Apr 2010

Wish it was!!

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Wiring Advice for 2G 2W light Switch

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