How big a duct for future wiring?
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Posted by California dude on March 31, 2005, 12:11 pm
Please log in for more thread options On Wed, 30 Mar 2005 18:49:24 -0500, Kenneth >>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. >
>Howdy, > >'Sounds like that would be enough for many dozens of >cables... Thnaks to all who responded. Isn't there some kind of guideline for installers about how many cabels of a certain type would fit into say a 2" conduit? dude >
>All the best, | ||||||||||||||||||||||||||||||||||||||||||||||
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Posted by Dmitri(Cabling-Design.com on March 31, 2005, 9:26 pm
Please log in for more thread options California dude wrote: > Thnaks to all who responded. Isn't there some kind of guideline for
> installers about how many cabels of a certain type would fit into say > a 2" conduit? > dude
Sure, check out this conduit fill capacity table: http://www.cabling-design.com/interaction/tips/19Apr20041.shtml -- Dmitri Abaimov, RCDD http://www.cabling-design.com Cabling Forum, color codes, pinouts and other useful resources for premises cabling users and pros http://www.cabling-design.com/homecabling Residential Cabling Guide ------------------------------------- ##-----------------------------------------------## Article posted with Cabling-Design.com Newsgroup Archive http://www.cabling-design.com/forums no-spam read and post WWW interface to your favorite newsgroup - comp.dcom.cabling - 1550 messages and counting! ##-----------------------------------------------## | ||||||||||||||||||||||||||||||||||||||||||||||
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Posted by California dude on April 3, 2005, 11:08 pm
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On Wed, 30 Mar 2005 18:49:24 -0500, Kenneth >On Wed, 30 Mar 2005 19:49:35 GMT, Dale Farmer
> >>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. >
>Howdy, > >'Sounds like that would be enough for many dozens of >cables... Thnaks to all who responded. Isn't there some kind of guideline for installers about how many cabels of a certain type would fit into say a 2" conduit? dude >
>All the best, | ||||||||||||||||||||||||||||||||||||||||||||||
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Posted by Dale Farmer on April 4, 2005, 8:54 am
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California dude wrote: > On Wed, 30 Mar 2005 18:49:24 -0500, Kenneth
> > >On Wed, 30 Mar 2005 19:49:35 GMT, Dale Farmer
> > > >>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. > >
> >Howdy, > > > >'Sounds like that would be enough for many dozens of > >cables... >
> Thnaks to all who responded. Isn't there some kind of guideline for > installers about how many cabels of a certain type would fit into say > a 2" conduit? > > dude > > >
> >All the best, The answer is, it depends. Low voltage cable or power cables? I could fit in one piece of 0000 gauge cable, or hundreds of strands of optical fiber. Rule of thumb is 3/4 fill maximum. Rule of my arm isn't strong enough is about 1/2 full unless it is a straight line conduit. Calculate the number of square inches for the conduit cross section. pieRsquared. Find out the outside diameter of the cable and calculate the cross section of the cable in square inches. Add them up until you reach the limit. For typical cat 5 cables, this is about 26, but that is off the top of my head. Some fat low-loss coax and you would only be able to get in seven to ten of them. --Dale | ||||||||||||||||||||||||||||||||||||||||||||||
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Posted by Watson A.Name - \"Watt Sun, th on April 8, 2005, 8:53 am
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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
get
> > construction to put in some kind of pipe or duct that I can use to > > video and Cat 5-type wiring up to the second floor
crawl
> > > > The contractor needs to run a 10" round "return" duct from the > > 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. | ||||||||||||||||||||||||||||||||||||||||||||||
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