At home, the power cables in my hallway are running parallel (for about 4-5 metres) to the Cat6 UTP ethernet cables, with a gap of about 100mm. One of the ethernet cables will be PoE and the others are non-PoE.
Where one of the non-PoE ethernet cables branches off into the adjoining rooms, they do so at a perpendicular angle over the power cables. The PoE cable will continue to run without crossing over the power cable.
I haven't yet moved into the house, so haven't tested the signal or observed any issues yet.
Q: Is the 100mm gap sufficient? Or is this going to present any issues?
Here is a link describing my Cat6 UTP cable: https://www.securiflex.co.uk/cat6-u-utp-colours
– MAK AK Jan 26 '22 at 11:18