How much space between cables is enough?


I understand that proximity between power cables and interconnects or power cables and power cables is a problem, but is there a rule of thumb as to how much space is required to NOT be a problem. 1/2", 1", 6"? Also, are all cables the same? I would assume that the higher the current, the more isolation, but belief and reality are seldom the same.
128x128tony1954
Thanks guys. I like touching minds.

Once we start talking about cable elevators of all sorts, such rooms look boobytrapped to me.
Do people really want to be in the room with cables floating in the air hanging on fishing lines?
It makes vacuuming so much easier...

"It makes vacuuming so much easier..."

"Hmmm, what is that in that ceiling corner? Spider web or my speaker cables? I'd better be careful when cleaning."