Intermediate switching - line in and switch line out positioning.

FatAlan · Nov 20, 2018

Probably a stupid question but need to get it straight in my head. Am I right in thinking that with a strapper line of two way and intermediate switches you can’t take the line in and the switch line out to the the light at one of the intermediate switches?

telectrix · Nov 20, 2018

you can as long as the L and s/L are coneected to the strappers, any way round, they can go anywhere on the switching part of the circuit.

FatAlan · Nov 20, 2018

So are we looking at feed in to L1 and SL out at L2 on the same side of the intermediate?

Richard Burns · Nov 20, 2018

The core from a specific terminal on the two way switch to the matching terminal on the intermediate switch is a continuous conductor so you can connect your L and SL anywhere along that conductor. Once you move to the other side of the intermediate both L and SL must be on that side.
In the below diagram you can connect any one SL 1-5 at any point so long as one of the L1-5 is also connected at any point. Similarly with SL 6-9 and L6-9.

[ElectriciansForums.net] Intermediate switching - line in and switch line out positioning.

FatAlan · Nov 20, 2018

Thanks Tel and Richard. Must admit I was hoping for one of Mr Burns fantastic schematics

DPG · Nov 20, 2018

He loves a diagram.

Rpa07 · Nov 20, 2018

I think diagrams love him!

DPG said:
He loves a diagram.

spanishash · May 10, 2020

telectrix said:
you can as long as the L and s/L are coneected to the strappers, any way round, they can go anywhere on the switching part of the circuit.

Would this still be the case if you had more than one intermediate switch? My brain says no but wanted clarification

Leesparkykent · May 10, 2020

spanishash said:
Would this still be the case if you had more than one intermediate switch? My brain says no but wanted clarification

Yes still the case.

telectrix · May 10, 2020

when using a 3 core for strappers, brown and grey are the switch connections, black is straight through using choc block, wago or similar all 3 cores should be sleeved brown. no matter how mant intermediate switches you have, L goes to brown. S/L goes to grey, either at 1 of the 2 way switches ( L1 and L2) or anywhere along the strappers (brown and grey).