I have four 240V mains (United Kingdom) cables I would like to run along the side of a wall in a conduit/conduit(s).
Can you advise if it is safe to put all 4 cables in the same conduit or multiple conduits for heat considerations.
The cables themselves are standard household mains cables (3 mains wires contained inside plastic outer covering).
By conduit I mean a firm plastic rectangular plastic tubing, fitted against the skirting (bottom) of a wall in an internal household room.
Several google searches did not give be specific enough results for my requirements.
Pointers to official BSI/ISO and/or other official electrical safety standards to backup answers would be very useful.
Thank you for your help.