3 way lighting

[nakbub]

Can anyone help I’v just taken over a job and 1st fix has been done I’m just doing 2nd the problem is I cant work out what the last “Electrician” was thinking when running the cables for a 3way switch between the dining room, kitchen and porch. In the kitchen light switch is a live feed and switch line from the light and two 3core&earth. One 3core goes to dining room switch & One goes to the porch switch. How would you get this to work?
Many thanks

 

[Mac]

Ultimate Handyman: three way light switching

Looks like you have too many cables at the kitchen switch.Can you post a picture of it

 

[amp]

it wont! you need three core from kitchen to dinning then three core from dinng to porch.
kitchen wires up just the same way as a two way and so dose the porch. The dinnig needs an intermediate switch. Through link the strapper(choc block together) and put L1's & L2's on either side of the switch

 

[ajelec10]

Its simple u connect the two switches with one 3 core up as normal br=c bl=l1 gr=l2
the middle switch should be an intermidate and you shloud conect the commons in a conector block the strapers as a normal intermidate so blacks one side greys the other also conect the permant live in with one of the blacks and the switch live in with one of the greys,
All he has done is a conversion switching arangement but with the twin switch wire in the intermidate switch
hpoe that helps
AJ

It will work how its wired at mo cant be botherd to draw it though

 

[davys]

You can do this quite easily, but the only downside is that you will need to sleeve the earth of one of the 3 cores as a live conductor.

Take the 3 core going to the porch.
Use it like a 2 way switch (ie strappers and a switch wire) Connect the switch in the porch as a 2 way.

Then take the 3 core going to the dining. Fit that switch in the dining as an intermediate using 2 cores as strappers to be block connected to the strappers coming back from the porch 2 way switch.
Then use the other live cable and sleeve the earth and use these as two more strappers going back to the kitchen 2 way switch.

I hope this hasn't confused the issue. If you want I could probably draw it out and email it

Regards

Davys
Easi-Est2 - Eazi-Est Electrical Estimating

 

[ajelec10]

you can do this quite easily, but the only downside is that you will need to sleeve the earth of one of the 3 cores as a live conductor.

Take the 3 core going to the porch.
Use it like a 2 way switch (ie strappers and a switch wire) connect the switch in the porch as a 2 way.

Then take the 3 core going to the dining. Fit that switch in the dining as an intermediate using 2 cores as strappers to be block connected to the strappers coming back from the porch 2 way switch.
Then use the other live cable and sleeve the earth and use these as two more strappers going back to the kitchen 2 way switch.

I hope this hasn't confused the issue. If you want i could probably draw it out and email it

regards

davys
easi-est2 - eazi-est electrical estimating

do not do this under any circumstances

 

[Mac]

it wont! you need three core from kitchen to dinning then three core from dinng to porch.
kitchen wires up just the same way as a two way and so dose the porch. The dinnig needs an intermediate switch. Through link the strapper(choc block together) and put L1's & L2's on either side of the switch

Agreed mate.Too many 3 cores at the kitchen switch

You can do this quite easily, but the only downside is that you will need to sleeve the earth of one of the 3 cores as a live conductor.

Take the 3 core going to the porch.
Use it like a 2 way switch (ie strappers and a switch wire) Connect the switch in the porch as a 2 way.

Then take the 3 core going to the dining. Fit that switch in the dining as an intermediate using 2 cores as strappers to be block connected to the strappers coming back from the porch 2 way switch.
Then use the other live cable and sleeve the earth and use these as two more strappers going back to the kitchen 2 way switch.

I hope this hasn't confused the issue. If you want I could probably draw it out and email it

Regards

Davys
Easi-Est2 - Eazi-Est Electrical Estimating

Why would you do this.The earth wire is there for a reason

 

[amp]

You cannot use the earth under any contions there will be no cpc in the swtich cables which run from kitchen to porch EXTREMELY DANGEROUS DO NOT DO THIS

 

[ajelec10]

It will work there are not too may wires at the kitchen switch i would draw you a schematic but i cant get it to up load

 

[Mac]

I reckon it was supposed to be only 2 way between the kitchen and porch.Are you sure this is not 2 2 way switches between the kitchen and dining room as well

 

[nakbub]

Thanks Guys! So in the intermediate switch i connect the live in one of the L1 terminals and the switch line goes in one of the L2 terminals.
Its meant to be 3 switches operating one set of lights in the kitchen. So you can turn them on/off from the dining room, kitchen or the porch.

 

[ajelec10]

Yes its the same as conecting them in L1 and L2 of the normal 2 way
AJ
it will work fine

 

[nakbub]

Thanks AJ think it just confused me as never seen it like. I’ll go give it a go later as the house is only down the road

 

[barney]

Hi hope this helps

 

[bazza2541]

You can do this quite easily, but the only downside is that you will need to sleeve the earth of one of the 3 cores as a live conductor.

Take the 3 core going to the porch.
Use it like a 2 way switch (ie strappers and a switch wire) Connect the switch in the porch as a 2 way.

Then take the 3 core going to the dining. Fit that switch in the dining as an intermediate using 2 cores as strappers to be block connected to the strappers coming back from the porch 2 way switch.
Then use the other live cable and sleeve the earth and use these as two more strappers going back to the kitchen 2 way switch.

I hope this hasn't confused the issue. If you want I could probably draw it out and email it

Regards

Davys
Easi-Est2 - Eazi-Est Electrical Estimating

WOW, just WOW!!!!
And you are a spark???