I am building a new house and am planning to hardwire network cables into each room.
Can I run CAT5/6 cables parallel to electrical wires without introducing any general safety issues or losing much in connection quality?
Wiring runs for up to 25 metres from patch panel and distribution board in garage to rooms.
My research indicates that is should be fine if they are in separate conduits or if the CAT cables are shielded.
While a shielded Cat5/6 cable is designed to protect itself from outside interferance, it isn't recommended to run them side-by-side to your electrical wiring. Typical is to run electrical down one stud and the Cat5/6 down a different stud. Basically do the same as you would for telco.