Replies

1. 
   JTC1 | Nov 04, 2009 03:52pm | #1

   Not sure about TV interference but running coax (low voltage) and 120v "next to" each other is considered a no-no.

   They cannot pass through the same bored hole and then must be separated by some forgotten (by me) distance.

   Not positive what NEC says about minimum separation distance. There is a minimum distance which I always exceed........I avoid running in the same joist / stud bay, or along/up opposite sides of the same bay.

   Others with better memories will weigh in......

   Jim

   Never underestimate the value of a sharp pencil or good light.
2. 
   Richie921 | Nov 04, 2009 04:50pm | #2

   I try to leave about a foot and if the 2 have to cross do it 90 degrees to one another.

3. 
   house567 | Nov 04, 2009 05:11pm | #3

   Thanx for the info.  I don't have too much to undo.  Luckily it isn't a paying job...and I learnt sumthin!

4. 
   gfretwell | Nov 04, 2009 05:57pm | #4

   I know people say it but there is no NEC restriction and I have never seen it to be a problem. Coax is very good at filtering out interference as is twisted pair. Most electronics also has 60hz rejection built in. I would worry a lot more about ground loops and that has nothing to do with how close wires are together.

5. 
   DanH | Nov 05, 2009 12:01am | #5

   It should be avoided, but running the two next to each other for a few inches will not result in any significant noise transfer to the coax.

   A strong nation, like a strong person, can afford to be gentle, firm, thoughtful, and restrained. It can afford to extend a helping hand to others. It's a weak nation, like a weak person, that must behave with bluster and boasting and rashness and other signs of insecurity. --Jimmy Carter
6. 
   junkhound | Nov 05, 2009 01:33am | #6

   If you use the coax that the cable company uses with braid and thick foil, you can run it taped together with 60 Hz romex around the whole house without any measurable viewing change to your TV signal

   Cant do that with a high Z microphone cable though!

   Cable company cable is exceptionally good shield, they dont want any of the signal to GET OUT!  In the first days of cable, you could lay a wire along the ground over where the cable co had their cable (or string it under a cable on the pole) and get a usable TV analog signal.  No chance nowadays.