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06-13-2008, 04:18 PM
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#1
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God Bless America
Trade:
Electrician
Join Date: Dec 2006
Location: Rahway, New Jersey
Posts: 3,400
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Those Verizon Fios Tech's!
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06-13-2008, 04:31 PM
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#2
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Member
Trade:
residential remodeling/construction
Join Date: Nov 2007
Posts: 57
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Are you referring to cross-talk? I thought (I'm no sparky) that running things parallel over 6ft in length would cause problems.
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06-13-2008, 04:35 PM
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#3
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God Bless America
Trade:
Electrician
Join Date: Dec 2006
Location: Rahway, New Jersey
Posts: 3,400
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This run of coax cable is for a television, not phone.
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06-13-2008, 04:38 PM
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#4
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DGR,IABD
Trade:
Electrical; Commercial and Residential Service
Join Date: Mar 2005
Location: Central PA
Posts: 9,665
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You'd think by now the word would pretty much be out that you can't drill the top and bottoms of I-joists.
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06-13-2008, 09:54 PM
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#5
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Pro
Trade:
Low Voltage
Join Date: Oct 2006
Location: Burlington, Ontario
Posts: 1,218
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The only reason I can see that they drilled through the I-joist was because they just drilled down through the floor above. Why wouldn't they have just gone inside the wall?
Dumbasses should know to never use the same hole as the electricians (and vice versa would be nice too).
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04-11-2009, 08:38 PM
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#6
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B&W Building Maintence El
Trade:
Electrical
Join Date: Mar 2009
Location: north east
Posts: 8
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their still not quite as bad as cox techs
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04-14-2009, 11:33 PM
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#7
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New Guy
Trade:
Mechanical Contractor
Join Date: Apr 2009
Posts: 20
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how far away should you run coax ... from power lines ?
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04-15-2009, 01:26 PM
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#8
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God Bless America
Trade:
Electrician
Join Date: Dec 2006
Location: Rahway, New Jersey
Posts: 3,400
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There are no specific requirements that I'm aware of. However, the closer you run the coax (such as RG6), to a 120 volt power line, the magnetic field of the power line could interfere with the signal from the coax cable. Never should the cable be run through the same bored holes as the power lines, and obviously never through the 'I' portion of an engineered joist.
In short, just keep the cable as far away from the power lines as possible.
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04-15-2009, 01:50 PM
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#9
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Electron Flow Manipulator
Trade:
Electrons for cash
Join Date: Jan 2009
Location: Iowa
Posts: 1,430
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If someone else installed that RG6, then whatever happens to it is their problem.
I have enough problems of my own without worrying about plumbers, tinners, brickies, framers, roofers, painters, landscapers, sheetrockers............
__________________
Age is just a number but mine is unlisted.
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04-15-2009, 07:49 PM
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#10
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Registered User
Trade:
Home Theater Design & Installation
Join Date: Jan 2009
Posts: 15
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The hole in the joist was probably un-intentional. Looking at the photo, you can see that the hole was drilled from above. I am assuming that the drilled the hole on the floor against the baseboard...this is typical for DTV and cable installers for basic installs...rather than wall fishing.
I see the horror all the time...
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04-21-2009, 01:40 PM
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#11
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ampman
Trade:
providing pathways for electrons and protons
Join Date: Apr 2009
Location: central florida
Posts: 733
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and when the cust. calls them back for a bad picture/sound they will always blame it on a bad ground at the service
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04-21-2009, 02:02 PM
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#12
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Pro
Trade:
Control Systems
Join Date: Mar 2009
Location: Ottawa, ON
Posts: 740
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I'm not trying to play devil's advocate, nor would I ever share an electrician's hole unless I absolutly had to....but that is almost insignificant. The guy probably didn't have his own slugbuster or grommets and wanted to get out as fast as possible since he's paid by the job. I see things far worse then this and the cross talk effect on RG6 used for digital bidirectional and RF is very very little espicially in such a short distance.
I've done a few odd-ball custome homes where all the wires in the house had to pass through the same bulkhead....and it was PACKED to the point where another elecrtical or lowvoltage wire couldn't go through...but the designer wouldn't allow it to be any bigger.
What kills me is people using T25 staples on CAT-5E cable....by by bandwidth!
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04-21-2009, 04:31 PM
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#13
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God Bless America
Trade:
Electrician
Join Date: Dec 2006
Location: Rahway, New Jersey
Posts: 3,400
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Quote:
Originally Posted by Inner10
I'm not trying to play devil's advocate, nor would I ever share an electrician's hole unless I absolutly had to....but that is almost insignificant. The guy probably didn't have his own slugbuster or grommets and wanted to get out as fast as possible since he's paid by the job. I see things far worse then this and the cross talk effect on RG6 used for digital bidirectional and RF is very very little espicially in such a short distance.
I've done a few odd-ball custome homes where all the wires in the house had to pass through the same bulkhead....and it was PACKED to the point where another elecrtical or lowvoltage wire couldn't go through...but the designer wouldn't allow it to be any bigger.
What kills me is people using T25 staples on CAT-5E cable....by by bandwidth!
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It may not be that big of a deal, however, this is a forum for professionals and if an installation could be done better I'm going to point it out.
Also, if you look closely the guy could have just gone behind the metal stud without having to make a hole. I installed the electrical cables the way I did for neatness.
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04-21-2009, 05:53 PM
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#14
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Pro
Trade:
Control Systems
Join Date: Mar 2009
Location: Ottawa, ON
Posts: 740
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You should head to Ottawa and see what BMI, Spectrum and Frontiere Technologies (three major cable subcontractors) are up to...makes that look professional. The cable tech's here quite often do not get proper training and don't know the basic rules of construction, its an unlicenced trade. The subs are paid poorly and have to supply their own vehicles and tools, in a way I kinda feel bad for them.
Quote:
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this is a forum for professionals and if an installation could be done better I'm going to point it out.
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Ok, I agree its a good example of when an ignorant non-professional makes an installation. I've seen so many little things like that I tend to turn a blindeye to it; I only get upset when they decide to open my pannels, cut up my hard work and re-do the hook-up, leaving a rats nest behind...I should really carry a camera.
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05-01-2009, 06:10 PM
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#15
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Member
Trade:
electrician
Join Date: Mar 2009
Location: virginia
Posts: 45
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Used to do work that required understanding at least some basics of trusses, Ijoists, etc and it was sad to me how often it was ignored by folks that should know better.
The trade should also know better, but I do not think it is getting passed on by schools or tradesmen enough to those coming up.
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05-01-2009, 08:29 PM
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#16
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ampman
Trade:
providing pathways for electrons and protons
Join Date: Apr 2009
Location: central florida
Posts: 733
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Quote:
Originally Posted by s.kelly
Used to do work that required understanding at least some basics of trusses, Ijoists, etc and it was sad to me how often it was ignored by folks that should know better.
The trade should also know better, but I do not think it is getting passed on by schools or tradesmen enough to those coming up.
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most likely not
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05-10-2009, 05:54 PM
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#17
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Member
Trade:
Electrical
Join Date: May 2007
Posts: 51
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However, the closer you run the coax (such as RG6), to a 120 volt power line, the magnetic field of the power line could interfere with the signal from the coax cable.
I think we need to dispel this right here. Never going to happen, especially with coax and what it carries. There is no problem with running coax, telephone or data through the same holes or next to runs carrying 120 or 240 volts. It's all a sparkie wives tale.
And if anybody wants to say that they have seen problems, before they start I'll say that they don't know what they are talking about. Awhile back I remember that there were actual tests done where CAT5e carrying data was run in contact for several feet with some NM cable carrying various loads up to the maximum for the cable. Never at any point was the data disrupted.
So, should you, if you are running low voltage drill your own holes? I think so only for the fact that it is better workmanship. Your picture above of the coax run through the bushing in the top plate really is no problem though. You can't expect a cable installer to carry a stud punch (or a 1- 3/8" hole saw) and bushings. Would you rather see a hole hacked out with a screwdriver and hammer?
-Hal
Last edited by hbiss; 05-10-2009 at 05:56 PM.
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05-10-2009, 08:52 PM
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#18
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Pro Tech Advisor
Trade:
"Alarm Company" CCTV PERS GPS 24Hr LV AV
Join Date: Aug 2008
Location: Northern Indiana
Posts: 60
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http://www.lanecoburn.com/images/BN_Sept-Oct07.pdf
Notice the 2" seperation referance... 2005 NEC 800.133(A)(2)
Jim
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05-10-2009, 09:46 PM
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#19
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Member
Trade:
Electrical
Join Date: May 2007
Posts: 51
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Notice the 2" separation referance... 2005 NEC 800.133(A)(2)
Read Exception #1
Exception #1:
Where either (1) all of the conductors of the electrical light, power, Class 1, non power limited fire alarm and medium power network powered broadband communications circuits are in raceway or in metal sheathed, metal clad, nonmetallic sheathed, type AC or type UF cables, or (2) all of the conductors of communications cable are encased in raceway.
The rest is BS from some BICSI PE that carries no weight.
-Hal
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05-10-2009, 10:16 PM
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#20
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Handle It!
Trade:
Everything The Union Guys Do Not Want To Do
Join Date: Feb 2008
Location: Brooklyn, NY ~ Haverford, PA
Posts: 7,901
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There is a relatively sharp 90 degree bend in the CoAx. Another No-No!!!
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