Hi and welcome
you need 3 core and earth cable for two way switching you only have 2 core and earth so your going to have to pull a new cable in

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There would be less trouble in the world
if l had not had six daughters

Oh no you don't need 3-core. You can do it in 2-core.

2-core for the strappers, connected to L1 and L2. Then Live to the C of one switch and the switch wire to the C of the other switch.

If you wire like that, would it mean that one of the switches has to always be on for the light to come on (i.e. if it was off, the position of the other switch would not matter and thr light would not come on?)

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I went to a bookstore and asked the saleswoman, "Where's the self-help section?"
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I'll move this to the sparks forum

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DIY | Donnas dream house

A picture would probably help Chris please

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DIY | Donnas dream house

No.

Either switch can switch on or off, just like any normally wired 2-way switch circuit. There are two strappers, let's call them A and B. Switch 1 switches live to either strapper A or B. Switch 2 connects the lamp to strap A or B. So if A is live, switch 2 can switch the lamp on & off.

If you leave the lamp off, and it's connected to strapper B, switch 1 can switch the lamp on by switching the live to strapper B instead of A.

And so on.

OK, I'll take your word for it (makes me wonder why 3-Core cable is normally used for 2-way switches though)

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I went to a bookstore and asked the saleswoman, "Where's the self-help section?"
She said if she told me, it would defeat the purpose.

3 core cable is normally used to save having to wire more than one cable to the second switch as you would have to feed the switch at one end, and then have 2 cores betwwen then another s/live from the second switch so makes it confusing for DIYers LoL

Nick

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If it isnt broke dont bloody touch it until it bloody well is and if it is broke then make drawing of the connections before you remove the broken one and replace with a new one LoL

The advantage of the 3-wire method is that provided you feed and take the switch wire from one end, the net current over the cable is nil.

In the 2 strapper case, there is no return current over the strappers. This leads to some magnetic field leakage that can be heard in induction loops, for example. It's just not good practice to wire in a way that allows magnetic fields to leak around.

Thanks for the update Chris, glad you got it sorted.

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I no longer skinny dip, i chunky dunk these day's.