Is it possible to conduct wiring and an Internet cable in one cable channel?
Is it possible to lay wiring and an Internet cable (not optics) in one cable channel? Is it possible not to trick a multicore cable into an outlet?
Yes, for this there are cable channels with compartments for different types of lines (power, information). Or in different channels. regarding the second question - No multicore cable (I wonder what is it with you? Is it not a PVA wire by accident?), tinning or crimping is mandatory when used with screw terminal blocks. Therefore, either crimping with the tip of the NShVI, or tinning.