Using short lengths (horror!) of un-twisted cable?

Hi Everybody,

It's been some time since I've been in here.

I'm planning the next expansion of my own homes C-Bus system. It's been a long time coming... mainly because of the existing roof structure, the cabling is largely inaccessible.

There are a couple of locations in my house (bathroom and toilet) where the existing Active/Switched Active light cabling is buried in the brick wall with no conduit! These are interior walls with no cavity and in the case of the bathroom there are vintage 1970s ceramic tiles to deal with... cutting into the wall would not be an nice option.

I know it's not "right"... but I'm after opinions on stability issues of a C-Bus network with the addition of two ~1.5m lengths of un-twisted 1.0mm White/Red cable.

I understand the voiding of warranty issues, etc.

What are your thoughts?

Regards,

Michael.

 

Short length of untwisted cable are sold by clipsal for their products now.

Take the outdoor motion sensor with its flylead. It is untwisted.

The comment has been made here - "C-bus will over two rusty fence wires".

UTP is used for noise rejection, especially needed for longer runs, but in your case where you have a very short run you will not see any issues with it at all.

The other option you have is to go wireless switches. A little more costly, but can give you the results you need (Ii think there is a battery powered switch available). You of course need a wireless network bridge to connect the two networks together.

Mick

 

I have done that in two places. One is about 4 meters long and I have no issues on my network.

It is certainly better than the wireless solution which is not very reliable in my installation

 

I went to a job recently where they used Orange and Orange and white for the + and Blue and Blue White for the - meaning the entire installation was not twisted. still worked fine.

Charles