When you run ethernet cable around the home (for a wired network) then should you avoid electrical wires? I've read somewhere that if you come across electrical wires then you should cross perpendicular to them. And if you want to run parallel to them then you should keep about 6inch distance from them.
What about copper pipes, especially the hot water ones.? Should you avoid them too? Can CAT6 cable run alongside a hot copper pipe?
Any other things to avoid?