Originally Posted by WildBill
I think nitdawg took care of your main questions.
A couple additional items.
1 - I would see if it is possible to install a conduit run between your wiring closet or wiring box on the main floor and the attic. That would make any future changes VERY easy.
Great idea. If you have a crawl space, you should have one underneath, which can also help with future runs on the first floor/outside
2 - Be sure to have an outlet in or very near your main wiring box. Nitdawg mentioned reasons to have some outlets in the attic where you might put your antenna in case you need to amp the signal or put on a rotator.
I have a 110V outlet in my connection box (use it to power wireless router and cable modem) and I had them put another outlet in the closet itself so I could power my printer and NAS. With that said, think about possible TV wall mounts to plan for 110V and cable/audio runs, although putting in a 110 isn't too bad usually after the fact.
If you have the $ (it was $150 for my family room and bonus room) the prewiring for 5.1 speakers. Even if you don't have a setup, it is so worth it for when you are ready.
3- If the house is large and/or you want sufficient wireless coverage consider a run dedicated for wireless broadcast unit to a location on the 2nd or 3rd floor or attic. Sometimes, like in my case, a wiring closet is on the 1st floor and located between a bunch of HVAC items and wireless reception is not all that I desire. So a CAT5 run to a location near power where you will setup a Wi-Fi hub might be a point of consideration.
Great tip...very dependent on what's around, my 1st floor jobby gets it done just fine since all my HVAC is in the attic
A couple other thoughts somewhat on topic.
1 - Don't neglect coax runs to locations such as the garage and back-porch. Those are tons cheaper and easier to do in the build phase.
Garage is key...poker night or Sunday football frying up some wings...never would have thought of it if the builder didn't mention it.
2 - For Ethernet - Don't neglect somewhat overlooked areas to wire like near your TV or entertainment systems for game systems such as the XBOX360 and PS3 type hookups. Sure wireless works but at this stage you can get a wired connection there and put in a hub and have options for a HTPC and game systems in the future.
This is what I had them put wherever I had coax, I had Cat5e:
3 - Having done the wiring (low and high voltage) for my own house I decided against ANY phone wiring. Just a thought but I knew that I was done with landlines and went with a VOIP type solution. I put my efforts towards Ethernet, coax and speaker wiring. Just a thought.
With my setup, I have a telephone distributor (which I don't use) and router at my switch which allows me to send either phone or internet to any of the Cat5e jacks...no need for traditional phone wiring since it is backwards compatible.
Enjoy the build process. This stuff is easy compared to wall-color, carpets, house color...etc.