Can person make realistic wires in blender?

Can you use blender to make a realistic wiring, and a room with lots of wires. I know about the bezier curve, but wondering if anyone has made a really nice and realistic wires with it? I have played around and have done alright with it. Thank you.

show some pics so we can better understand what you mean !

and is this in cycles ?

also depends on the quality needed !

thanks
happy cl