Positioning and fixing of cables

To clear up the discussion with regards to AC/DC cabling ... different voltages and data.

Regulations from the latest SANS 10142- 1 ed (3.1) 

6.1.7 If conductors that operate at different voltages run in the same wireway,
the insulation of each conductor shall be able to withstand the highest
conductor voltage in the wireway. Alternatively, the conductors shall be
separated by a continuous barrier of insulating material or earthed metal.

6.1.10 Conductors that form part of a d.c. installation shall not be run in the
same wireway as conductors that form part of an a.c. installation.

6.4 Positioning and fixing of cables
6.4.1 Positioning

A cable shall not be run

a) in the same trench or wireway as a supplier's cable, except with the
supplier'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,

c) where it is likely to be damaged by liquids such as oil, acid, acetone and
alkali or by gases such as sulphur dioxide,

d) within 150 mm of hot services such as hot pipes and flues if the heat is
likely to damage the cable, unless the cable is cooled or shielded from
heat, or

e) in a position where it is likely to be damaged, unless it is mechanically
protected.