Replacing a 3 way switch
Ask questions and find answers to many subjects relating to electrics and electrical work

2 posts   •   Page 1 of 1
daz2710
Labourer
Labourer
Posts: 1
Joined: Sat Feb 27, 2010 4:16 pm

Replacing a 3 way switch

by daz2710 » Sat Feb 27, 2010 4:25 pm

I want to replace a old 3 way light switch with a modern new one.

I have 3 cables,black and red coming out of each one.

The new light switch has at the top L2 L1,common,L2,L1

The bottom has common,L1,L2,common.

The light switch is left side operates the upstairs light with a light switch upstairs,the middle one operates the downstairs light and the far right operates the outside light.
Can anyone tell me how to wire up as the instructions i got are rubbish.

ericmark
Project Manager
Project Manager
Posts: 2855
Joined: Fri Oct 02, 2009 9:49 pm
Location: Llanfair Caereinion, Mid Wales.

by ericmark » Sun Feb 28, 2010 2:37 am

Each cable will have one wire to top and one to bottom so cable A will likely be Red to L1(top left) and Black to com(bottom left) cable B will likely be Red to com(top middle) and Black to L1(bottom middle) cable C will likely be Red to L1(top right) and Black to com(bottom right). If switch works wrong way around swap L1 to L2.

2 posts   •   Page 1 of 1
It is currently Tue May 21, 2024 11:07 pm