Pulling cat6a through existing electrical conduit?

[OCP]

In our previous house there was no ceiling access either so i chased channels in the wall and had 25mm pipes running from every room - all connected to each other and terminated in the garage where the cab was mounted above the door.

My poor wife was in tears when she saw the mess i created but we were going to paint anyways.

After i screeted the walls and painted them there was no evidence what so ever other than additional 4x4 plates with 2x R45 connections in all the right places

 

[savage]

In our previous house there was no ceiling access either so i chased channels in the wall and had 25mm pipes running from every room - all connected to each other and terminated in the garage where the cab was mounted above the door.

Which is the correct way to do it yes (I have a ceiling, so I just chase straight up into the roof normally). These days, you get wall chaser machines which makes the perfect width/depth channel for either 20mm to 25mm conduit, very quickly cleanly and efficiently. No more manual hammer work. The dust is still a mess though.

Next year when I start building again at my place, I too have about 6 new pipes that needs to go into the existing walls. It's unfortunately a PITA, but it is the correct way to do it.

 

[Gnome]

6.4.1 Positioning
A cable shall not be run
a) in the same trench or wireway as a supplier's cable, except with thesupplier's permission,
b) in the same wireway as the cables or wires of telecommunication,radio and signalling circuits that are not covered by this part of SANS 10142 (SABS 0142),
c) where it is likely to be damaged by liquids such as oil, acid, acetoneand alkali or by gases such as sulfur dioxide,
d) within 150 mm of hot services such as hot pipes and flues if the heatis likely to damage the cable, unless the cable is cooled or shieldedfrom heat, or ..

https://www.scribd.com/doc/32614384...n-1-7-the-Wiring-of-Premises-LV-Installations

In SA it is a criminal offense to tamper with an electrical installation.
If anything happens, not only will insurance not cover it, you will be charged with a crime, should for example anything serious happen (eg. fire/electrocution/etc.)

Btw. the primary concern for not running the two types of cable in the same wire way has nothing to do with interference.

Electrical systems have stringent requirements around circuit breakers and safety.
Telecoms cables have none.

The risk exists that these two wiring systems can come in contact with each other creating a fire or electrocution hazard where you connect a system with no safety requirements to a system that has a stringent requirement. Thereby negating the safety of the primary system.
The risk is very well founded and led to a number of incidents in the country in the early years before legislation came into effect.

I've rewired two of places I've bought and both had ground faults due to conductor sheath being damaged over time. Usually because old cables and new cables are upgraded and then cables get damaged. It is a well founded concern and I for one support 100% the separation of electrical circuits from other circuits.

These laws exist because basically layman have absolutely no understanding of electrical systems and what makes them safe.

Btw. I don't do electrical wiring as a day job so I don't have a financial incentive to say this. Simply my experience which has shown me that the regulations we have are very practical and well thought out.