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What's the right size of smurf tube to use?

post #1 of 7
Thread Starter 
I'm about to buy a house and want to lay my smurf tube before the drywallers come in to do other work, that way they can close up after I'm done. Every endpoint is going to have cat6, speaker cable, and possibly phone line. Do you think 1/2" tubing will be enough, or will 3/4" work? I'm fully capable of clipping and crimping as needed, so it's really just the room for the cabling I'm concerned about.

To explain the basis for my concern, there's one room that is on a slab foundation and the lower floor. To run smurf tubing, I'd either have to go through every stud in the wall or run all the way up to the ceiling. I'm concerned 3/4" holes in every stud will take away from structural integrity of a loadbearing wall, so I'm considering the smaller tubing.
post #2 of 7
Install all cables outside of the flexible conduit, before the drywall goes in. Leave the conduit empty - it's for futureproofing., for stuff you forget or isn't invented yet.

'All the way to the ceiling' isn't far. Avoid sharp bends, and keep the number of bends to a minimum.

I'd use 3/4 inch, or larger, if possible. Makes life easier.

Take a look at the plumbing stud and top/bottom plate penetrations to see how it can be done.
post #3 of 7
From someone who has pulled cable through smurf tube....YUCK! I know it's super easy to run, but I would advise to run PVC with sweeping bends, if possible. The smooth pipe is a ton easier to pull wires through later. If possible, place a pull string (nylon) when fitting the sections together.

As it's been mentioned, run the current wiring outside the conduit and save the conduit for future proofing.
post #4 of 7
Thread Starter 
Got my smurf tubing installed to every room in the house! I went with 3/4" tube, and plan on running two cat5e cables and two phone cables in each one. The timing was right to do this before our drywaller came through to patch holes. w00t!
post #5 of 7
Thread Starter 
FWIW I also have a cable puller, and tested it out. It moves like butter through conduit. And since my tubes all go into the attic, there's no sharp angles to negotiate.
post #6 of 7
I used 1" smurf tube for XLR cables for subs..

BIG MISTAKE!!!

After two broken strings, lubing etc....we cut off the ends and re-attached.

I'm not looking forward to pulling 50ft of XLR cable for the rear sub!

Use PVC with sweeping curves....
post #7 of 7
Save yourself some hassle and money, pick up some 1.5" or 2" sump tube from menards, works great.
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