two way switching using T&E

[Norv]

How would you wire a 2 way switching circuit using twin & earth cable between the switches?

 

[securespark]

1. If you have (or can arrange to have) a switchwire at one end and a live feed at the other, then you would link between the two switches using the T&E in terminals L1 & L2, connecting the others to the common terminals.

2. If you are trying to make a one way switch into two way without rearranging the wiring, you can't. NEVER USE A CPC (earth conductor) for anything other than earth potential.

This not only includes 2-way switching, but also passive infra-red & timer fan wiring, amongst others.

If a cpc IS used as a live conductor, another person cutting into the circuit cable may reasonably assume the green/yellow wire (in flexible cable) or bare copper wire (in cable) is at earth potential, when it is not.

 

[baz1968]

Have a look at the "How to pages"

 

[Norv]

I did but couldnt see any using t&e

 

[Norv]

Thanks securespark

This is how it looked, how should it be wired to work properly, my heads not working today

 

[securespark]

That diagram does not make sense.

For starters, you have a 1 way switch upstairs. 2nd, there seem to be too many cores at the upstairs switch position.

Third, a neutral connection would never go to a standard single pole light switch.

Can you clarify?

 

[Norv]

I drew it upside down. The top picure is the downstairs switches & vice versa.

I understand there needs to be a 2 way sw upstairs & the Black wire shouldnt have gone to the N of the light. The hallway was replastered & I'm guessing the switches were removed. Its strange that it had worked before plastering.

 

[ban-all-sheds]

How would you wire a 2 way switching circuit using twin & earth cable between the switches?

By using 2 T/E cables.

I believe the best practice guidelines are to sleeve the unused T/E core G/Y and earth it at each end.

 

[Norv]

sussed it now. It was easy after I'd had my tea