How big a duct for future wiring?
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Posted by Al Dykes on April 8, 2005, 12:07 pm
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>>
>> >> California dude wrote: >> >> > I have a 2 story house where we are going to be putting in central
>air
>> > conditioning in a few weeks. I want to take advantage of this
>> > construction to put in some kind of pipe or duct that I can use to >get
>> > video and Cat 5-type wiring up to the second floor
>> > >> > The contractor needs to run a 10" round "return" duct from the >crawl
>> > space under the house up to the attic above the second floor
>ceiling.
>> > I want to be able to tell the contractor that I need "X" size
>> > additional clearance for this pipe. So I have some questions. >>
>> Since he probably will be framing up a square around the round >> duct, just find out what size round conduit will fit into the corners >> left vacant. ( Off the top I'd guess a three or four inch round would >> fit nicely, but a few minutes with a piece of paper and a ruler will >> give you the answer. ) Put in four of them. Do remember that you >> want to put in fire stop barriers for this as well. >> This gives you a conduit for power, a conduit for data, a conduit >> for video, and a spare for future use. >> >> --Dale >
>One can be used for the mice to crawl thru. ;-) > >Seriously, keep the RG-6 and other low level signals in their own >conduit, away from the datacomm and telecomm signals. > > Why ? -- a d y k e s @ p a n i x . c o m Don't blame me. I voted for Gore. | ||||||||||||||||||||||||||||||||||||||||||||||
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Posted by California dude on April 9, 2005, 2:15 am
Please log in for more thread options On Fri, 8 Apr 2005 05:53:13 -0700, "Watson A.Name - \"Watt Sun, the >
>>
>> >> California dude wrote: >> >
>One can be used for the mice to crawl thru. ;-) Yo, California dude here. Don't have mice in the Golden State. Politicians scared them all off. :) :) >
>Seriously, keep the RG-6 and other low level signals in their own >conduit, away from the datacomm and telecomm signals. OK, but then how come you see bundled cables for sale at "ahem" very high prices. The ones I've seen on web sites are usually 2 Cat 5e plus 2 RG-6 or RG-6 QS. Are those vendors selling us something that is "bad for us?" | ||||||||||||||||||||||||||||||||||||||||||||||
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Posted by Watson A.Name - \"Watt Sun, th on April 9, 2005, 1:54 pm
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> On Fri, 8 Apr 2005 05:53:13 -0700, "Watson A.Name - \"Watt Sun, the
> > >
> >>
> >> > >> California dude wrote: > >> >
> >
> >One can be used for the mice to crawl thru. ;-) >
> Yo, California dude here. Don't have mice in the Golden State. > Politicians scared them all off. :) :) > >
> >Seriously, keep the RG-6 and other low level signals in their own > >conduit, away from the datacomm and telecomm signals. >
> OK, but then how come you see bundled cables for sale at "ahem" very > high prices. The ones I've seen on web sites are usually 2 Cat 5e > plus 2 RG-6 or RG-6 QS. Are those vendors selling us something that > is "bad for us?" Ahnold has really scared a lotta mice. And all the public service workers like teacher and nurses, too. They're running TV ads in prime time saying that he's "after us", meaning the workers! Finally he backed down on his pension plan, after a lotta his GOP supporters found that their constituents might not vote for them in the 2006 election! Stoopid politicians. Anyway, the signals on the RG cables are in the millivolt and microvolt levels. They will pick up noise from the other digital cabling much easier and sooner than they will interfere with the digital signals. So it's best to run them separately, as far apart as possible. Of course you can still get interference from digital signals leaking into other places beside the cables, such as into antennas or dishes. "Stuff happens." | ||||||||||||||||||||||||||||||||||||||||||||||
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Posted by California dude on April 10, 2005, 1:01 am
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On Sat, 9 Apr 2005 10:54:21 -0700, "Watson A.Name - \"Watt Sun, the >>
>> Yo, California dude here. Don't have mice in the Golden State. >> Politicians scared them all off. :) :) >> >
>> >Seriously, keep the RG-6 and other low level signals in their own >> >conduit, away from the datacomm and telecomm signals. >>
>> OK, but then how come you see bundled cables for sale at "ahem" very >> high prices. The ones I've seen on web sites are usually 2 Cat 5e >> plus 2 RG-6 or RG-6 QS. Are those vendors selling us something that >> is "bad for us?" >
>Ahnold has really scared a lotta mice. And all the public service >workers like teacher and nurses, too. They're running TV ads in prime >time saying that he's "after us", meaning the workers! Finally he >backed down on his pension plan, after a lotta his GOP supporters found >that their constituents might not vote for them in the 2006 election! >Stoopid politicians. Yeah, You could even say, "even stoopider voters." Wot-in-heck did they expect from a guy whose pecs are bigger than his brain. Course, the Democrats haven't done too well either for the voters. >
>Anyway, the signals on the RG cables are in the millivolt and microvolt >levels. They will pick up noise from the other digital cabling much >easier and sooner than they will interfere with the digital signals. So >it's best to run them separately, as far apart as possible. Ah. So it is NOT WISE to do long lengths of RG-6 cabel right up next to Cat5e. Thanks. That makes a lot of sense. >
>Of course you can still get interference from digital signals leaking >into other places beside the cables, such as into antennas or dishes. >"Stuff happens." Alla time. Especially to guys who don't exactly know what they are dong, but won't ask. (Ever see a guy ask for driving directions, on front of his wife or girlfriend? ) >
> | ||||||||||||||||||||||||||||||||||||||||||||||
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Posted by Robert Redelmeier on March 30, 2005, 10:53 pm
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> How big a pipe? What kind of materials would be OK
As big as he can conveniently fit -- 4-6" would be my choice. 2" minimum. I'd use any PVC unless there was some local code against it. Ditto for touching the return duct. I don't think "plenum rules" should apply for residential (wood) construction -- always lots of toxic smoke. Plenum rules become important in less flammable/fireproofed situations when gasses could be carried outside the fire zone. -- Robert | ||||||||||||||||||||||||||||||||||||||||||||||
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