3 Gang 2 way light switch - different naming conventions

[AMusgrove]

Hi all,

Recently bought a house and been changing sockets, switch and light fittings. It's been straight forward so far as I've been copying the wiring from the old fitting and matching it to the new fitting.

However, I've just come to change a 3 gang 2 way light switch and I'm a little stuck. The left switch controls the hallway light, the middle switch controls the outdoor light and the right switch controls the upstairs landing light (which has a switch upstairs too). The switch I'm replacing has a different naming convention:

• A1, A2, A COM
• B1, B2, B COM
• C1, C2, C COM

The new switch has the following naming:

• L2, L1, COM
• L2, L1, COM
  
• L2, L1, COM

I was just wondering if anyone would be able to help me understand how the wiring from the old switch maps to the new switch?

Below is my attempt at creating a diagram of the current wiring:

Here's an example I found online that compares to the new switch layout/naming:

Any help is much appreciated.

 

[EFLImpudence]

It would be better if you had written them in order.

A Com, A1, A2. switch 1
B Com, B1, B2. switch 2
C Com, C1, C2. switch 3

Com, L1, L2 switch 1
Com, L1, L2 switch 2
Com, L1, L2 switch 3

Then they correspond.

You might also find
L1, L2, L3
and
L, L1, L2

Most are just triangles which correspond whichever way up they are.

We have met some switches lately which have the terminals in a haphazard design.

 

[terryplumb]

Mark all the conductors in your existing switch ,and take pics.
In essence com is the same on new and old switches. So transfer all the same.
A1 is now L1
A2 is now L2
Same for the other gangs .I.e....
B1 is now L1
Etc ,etc.
By the way on metal switch plates that you have replaced ,did you connect the earth conductors to the earth terminal on the back of the switch plate ? It seems to be a common thing that diyers don't do.

 

[AMusgrove]

It would be better if you had written them in order.

A Com, A1, A2. switch 1
B Com, B1, B2. switch 2
C Com, C1, C2. switch 3

Com, L1, L2 switch 1
Com, L1, L2 switch 2
Com, L1, L2 switch 3

Then they correspond.

You might also find
L1, L2, L3
and
L, L1, L2

Most are just triangles which correspond whichever way up they are.

We have met some switches lately which have the terminals in a haphazard design.

Thanks for the quick response, I thought it might be something like but I didn't want to chance it with electrics.

Mark all the conductors in your existing switch ,and take pics.
In essence com is the same on new and old switches. So transfer all the same.
A1 is now L1
A2 is now L2
Same for the other gangs .I.e....
B1 is now L1
Etc ,etc.
By the way on metal switch plates that you have replaced ,did you connect the earth conductors to the earth terminal on the back of the switch plate ? It seems to be a common thing that diyers don't do.

Thanks! I think I had a bit of a panic when I didn't recognise the names but thinking it through logically and considering each switch individually it makes a lot more sense. Yeah I've made sure to earth the new fittings. Much appreciated.