I'm installing some additional runs of ethernet. I'm just surface mounting these for now. The wall they are running along will be replaced in the medium term and the cables will be hidden then. There will be max 6 runs of cable.
The last time I did this, I used 25x25 mm conduit / trunking like this. This was plenty big enough for 6 parallel runs of cable. BUT I didn't factor in the corners. I am using Dynamix cat 6 cable which is pretty rigid; it certainly prefers sweeping bends and there was no way of getting 6 runs of cable around a corner using a 25x25 mm conduit.
What's the right way of doing this? Bigger conduit would probably help, but even then there is always going to be a limit on 90 degree bends. Some kind of clever corner piece?