Add neutral wire to wall switch

[kinman]

Now that right there is just scary. Is that what you pulled directly out of the wall? No sheath or anything?!

Yes thats all. Just one layer of red/black plastic and no more sheath. No neutral and ground wire inside all lighting switches.

 

[kinman]

kinman,

I looked in your profile but it is not listed, where do you live? That wiring sounds real "interesting"...

Hi, I live in hongkong should be British Standard.

 

[kinman]

okay, new theory:

You have concrete walls with conduit. There is no sheath required in conduit and that twist looks awfully familiar.

Your builder ran BX inside the wall, and that is what you pulled that out of.

That twist looks exactly like what is found in BX. Am i correct?

The original wire inside the light switch does not twist. Actually this one is the same wire (7x22) but twisted for the audio amplifier (someone told me twisted power cable helps to reduce external interference, and more flexible).

 

[mustangcoupe]

Thanks 123. I have checked the circuits for lighting in my home. They run on seperate circuit breakers and pipes. They also have different standard: no sheathing, no ground/earth, plastic pipe. I prefer variation #1. I will try to trace all existing wires and follow the same practise.

But as I quoted above he said plastic pipe...... so he still would not have ground like in the installs where they use metal conduit using the conduit as ground.