[jaclaz]

Until that norm (as said I believe around 2010 or so) you could NOT mix low voltage (and signal) cables with mains (220V-240V AC usually) within a same conduit.

The new norm allows this mixing as long as the low voltage cables are certified as having insulation for 400 V.

Still you cannot strip the cable (i.e. you cannot put a terminator/receptacle) in the same box as mains.

The code is mainly about electrical safety, it doesn't consider the possibility of interference, that is "your" problem (but shielded cables give no problems in practice).