More domestic 2 way

I was out yesterday to a 2 way lights problem, customer had taken pics before he started (Good man).

Single &E for L & SL and 3C without E. He added a metal intermediate to this by cutting and rerouting the 3C, adding some new 3C&E and a Wago box.

This is how I found it but in the meantime he had tried all sorts of other arrangements as adding the intermediate didn't provide the function he expected.



He even showed me printouts of the various systems he found on line including the craps AI had concocted that he had tried to achieve, this was still on his ipad:

Power Source
|
(Black)
|
Switch 1 (3-Way)
|---COM (Common) ----------------- (Black to Light)
| |
| |
(Red) (Traveler 1)
| |
| Switch 2 (4-Way)
|----|----|----|----------------- (Traveler 2 to Switch 3)
| | | |
(Red) (Traveler 1)
| | |
| Switch 3 (3-Way)
|----COM (Common) ------------------ (Light)
|
(Black wire to Light)
|
Light




Very simple solution



It hadn't occurred to me to post it, but the concurrent thread...

Absolutely no advantage in the way it was originally wired (2 way only) though, just one of the many alternative methods I suppose.

We'll have to draw out every conceivable 2 way method - I think I came up with 12, decades ago.

3 core from rose to switch twice, anyone used that method?

pete01 said:

3 core from rose to switch twice, anyone used that method?

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Yes, and I think there's more than one way of connecting that.

sparkwright said:

Yes, and I think there's more than one way of connecting that.

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Ive never done it but I suppose it's easier at the switch having only one 3 core?

It’s been mentioned before on here.

Don’t know what advantage is of taking 2 3+e to the rose?

AndyPRK said:

It’s been mentioned before on here.

Don’t know what advantage is of taking 2 3+e to the rose?

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In my experience, it meant less cables to chase in, or could re-use old narrow conduits.

pete01 said:

3 core from rose to switch twice, anyone used that method?

Click to expand...

Yup a number of times and the reason I tend to use 3C&E for switchdrops