Dos and Don’ts of Cable Routing (Part 1)
Posted 05/18/07 at 01:45:19PM | by  

Michael Brown

As I mentioned in a previous blog post, I’m in the process of building a new house. Since I’m starting from an absolutely clean slate, I’ll be incorporating many home-automation features into the design. Much of this technology will be wireless (Intermatic Z-Wave lighting controls, for instance), but I’d be crazy to not string Ethernet cable throughout the house, too.

I would have loved do this work myself, but since it’s not something I do every day, I’m not very efficient at it. Besides, I already have a day job, and I didn’t want to delay the construction process. So I brought in a professional: Allen Wilson of Premier Telecom Systems. Allen is doing all the low-voltage work in the house: Ethernet, telephone, coax (for satellite TV), and speakers. I recently visited the job site to document his progress—and to pick his brain about professional network installation.

DO INSTALL A HOME RUN
No matter how large or small your network is going to be, you should have a home-run location where all your cables will terminate. This Leviton Structured Media Center can be flush mounted, as seen here (when the drywall goes in, the opening of the cabinet will be flush with the finished wall) or installed atop sheetrock. This cabinet is 28 inches tall, which should be large enough to accommodate my current and future needs, and it includes a knock-out panel for a power receptacle at the bottom.

Many people install their home run in the garage, but since I intend to use my home as a practical product-testing lab for my work for Maximum PC, I’m locating this one in the closet of my home office.
DON’T MIX YOUR COLOR SCHEME
The black bundle of cables is coaxial cable for satellite TV, most of the white cables are telephone lines, and the blue cables are for data. As is typical, Allen is using CAT5e for both data and voice traffic.Since he needed to run many more data lines than voice lines (we’re installing four independent phone lines, even though I might never use more than one), he cheated and used some of the white cable for data.

 

DO LABEL YOUR CABLE
As you string each cable, label it so you know what it is (especially if you’ve mixed your color scheme), which room it goes to, how it should be terminated (with an RJ-11 jack, for telephone, or an RJ-45 jack, for Ethernet), and which patch block it will occupy at the other end. A Sharpie pen, with its indelible ink, is the perfect tool for this job.

DO SEGREGATE YOUR CABLES AND PLAN FOR FUTURE GROWTH
Allen separated the coax cable, which will be used to carry video, from the data and voice cables. In addition to installing an enclosure that’s larger than I’ll need right now, Allen drilled an extra hole in the top plate so that he could install a third conduit in case I ever decide to run even more cable into and out of the enclosure. (Note: The bright light in the background of this shot is from a skylight that has not yet been boxed in.)

There’s much more to cover on this topic, so I’ll pick up where I left off in a future blog post.

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Comments

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Cat 5?
Submitted by D Waterhouse on Fri, 2007-05-18 13:10.

To make it really future proof, shouldn't you have used CAT6 cable for the data? I'm pretty sure that you need CAT6 for gigabit ethernet, and I don't think it's much more expensive.

I think most high quality
Submitted by nam112381 on Fri, 2007-05-18 13:55.

I think most high quality Cat 5e runs can run gigabit speeds without an issue. Since this installation is brand new and looks pretty professional in staying away from power sources and other inteference, I don't think he would have a problem running gigabit if he wanted. Also, even multimedia streaming works pretty well at 100mbps.

Cat5e Should be Good Enough
Submitted by MrMick on Fri, 2007-05-18 14:26.

As much as I like overkill, I decided not to go with Cat6 because I'm building in a rural area and don't think I'll ever get fiber to my curb (I'll likely get a curb first--right now, there's just a drainage ditch running alongside the street.

Cat5e should enable me to run a gigabit network, which should be plenty for streaming audio and video.

Mike

Watch your termination scheme
Submitted by justjoehere on Sat, 2007-05-19 11:01.

A couple of things. First, don't assume you can make up your own wiring scheme for terminating. I made the mistake of thinking I could. I had to go back and change it to 568A (you could also use 568B). The point is, just because both ends are terminated the same doesn't mean they will work for Ethernet. It was a lesson learned the hard way. Also, try not to mix brands of terminations. It is easy to flip the scheme 180 degrees by accident.

While you are running cat5e, coax, etc... why not run fiber. I don't have any current use for fiber, but while remodeling my family room, I ran fiber to 25% of the jacks; just in case.

When I rewired my house I
Submitted by Bobaxos on Sun, 2007-05-20 15:17.

When I rewired my house I made the mistake of under estimating the number of jacks I was going to use in a room. I now have a switch in that room to accommodate the extra devices.

The lesson to be learned is you are better off over wiring a room than under wiring.

I have a functional Gigabit
Submitted by DRAGONWEEZEL on Mon, 2007-05-21 09:22.

I have a functional Gigabit network also. Cat5e was double plumbed to each room for a total of 6 jacks in three rooms. I'm waiting on wiring my living room and kitchen 'till I go through a remodel. It's going to be 1 more year as I just don't need it right now, and all funds are planned for my wedding.

My home run is in the Garage, and I am in the process of dedicating an S3 "on Demand" file server. We'll see how that goes...

I found the hardest part of wiring my house (it wasn't that hard) was being confident of where to drill. Drilling into a finished house tends to cause a little apprehension for most people.

THERE ARE ONLY 11 TYPES OF PEOPLE IN THIS WORLD. Those that think binary jokes are funny, those that don't, and those that don't know binary



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