We strap the conduit to the tower, junction boxes only where needed to drop cable out for equipment. Normally just at the top To handle the weight of the cable on itself, we bundle the cable on the ground with 1 or 2 separate pull strings that are wound around the cable and taped every 5 feet. At the top, we attach the pull string to the top of the conduit (inside the jboxes). Cable weight just pulls down on the conduit.
Using conduit brings up an important issue. assume you will not be able to add another line for something you need a couple of years down the road. Make sure you put in extra cable for any future "stuff" you might add. On one tower where the conduit was much larger than the cable bundle, we shot expand-a-fome in the top 40' - 70' of conduit just in case the pull string broke Inside the conduit we use shielded cable with shielded ends, do not run the conduit down the leg of the tower, run down a face. If you must run down a leg, get the conduit spaced away from the leg. Since we started retrofitting towers with this, we take ALLOT less damage. Scott ----- Original Message ----- From: "Wisp" <[email protected]> To: "WISPA General List" <[email protected]> Cc: "WISPA General List" <[email protected]> Sent: Friday, March 06, 2009 2:26 PM Subject: Re: [WISPA] Knowing when to stop doing installs yourself,they are for the young > For cat5 runs is the weight of the cable not hard in it if it is just > hanging in the conduit? Du you put junction boxes every x feet to > strap down? > > Cliff Olle > > President > Eccentrix Technologies, LLC > (512) 426-4929 > [email protected] > > On Mar 6, 2009, at 1:39 PM, jp <[email protected]> wrote: > >> several sections of that stuff gets heavy. I pushed 100' up the inside >> of a tower once. We used it for the power cable coming down from a >> windmill. Dropped a weight on a fishing line for the pull string pull. >> >> On Fri, Mar 06, 2009 at 02:26:21PM -0500, RickG wrote: >>> I stacked 15 - 20' sections of the grey pvc up to the 300' level >>> where our >>> equipment was located. What a job that was! -RickG >>> >>> On Fri, Mar 6, 2009 at 11:30 AM, Joe Miller >>> <[email protected]> wrote: >>> >>>> >>>> Here is an idea for the tower sites....Run your cat5 in electrical >>>> conduit, >>>> the gray PVC type. That way the cat5 will be protected from the >>>> weather. >>>> I've done this and I haven't had to replace cat5 on the towers on >>>> over 3 >>>> years now. >>>> >>>> >>>> --- On Fri, 3/6/09, Marlon K. Schafer <[email protected]> wrote: >>>> >>>>> From: Marlon K. Schafer <[email protected]> >>>>> Subject: Re: [WISPA] Knowing when to stop doing installs >>>>> yourself,they >>>> are for the young >>>>> To: [email protected] >>>>> Date: Friday, March 6, 2009, 10:06 AM >>>>> I have had a few customers look at us crosswise. A couple >>>>> have even asked for wall plates, or had us install ethernet >>>>> jacks. We'll do this if asked, but I don't carry >>>>> the parts with me. >>>>> >>>>> I also try REALLY hard to NOT put any ethernet wall plates >>>>> in. I don't want the extra connection in a poe >>>>> situation. It's probably fine, but as an ex lineman I >>>>> know that connections are almost always the reason for a >>>>> failure so I want the fewest possible. >>>>> >>>>> We try to hide all cable as much as possible, we ask for a >>>>> vacuum to clean up any drillings, we do NOT leave the little >>>>> ends from the cat5 crimps laying around - not even outside. >>>>> >>>>> Hell, until recently we always ran indoor WHITE cat 5 >>>>> cable. People REALLY liked that, I have just gotten tired >>>>> of cables with water in them. Luckily it seems to almost >>>>> exclusively happen at my towers not at the customer's >>>>> sites. It's usually cheap and easy to replace the bad >>>>> cable and ruined poe. But I hate service calls! >>>>> >>>>> Sure wish I could find a double insulated white cable to >>>>> use instead of this black stuff we're using now. >>>>> >>>>> laters, >>>>> marlon >>>>> >>>>> ----- Original Message ----- From: "Joe Miller" >>>>> <[email protected]> >>>>> To: "Marlon K. Schafer" >>>>> <[email protected]> >>>>> Sent: Friday, March 06, 2009 7:59 AM >>>>> Subject: Re: [WISPA] Knowing when to stop doing installs >>>>> yourself,they are for the young >>>>> >>>>> >>>>>> >>>>>> I just had to ask......very interesting. >>>>>> >>>>>> >>>>>> --- On Fri, 3/6/09, Marlon K. Schafer >>>>> <[email protected]> wrote: >>>>>> >>>>>>> From: Marlon K. Schafer >>>>> <[email protected]> >>>>>>> Subject: Re: [WISPA] Knowing when to stop doing >>>>> installs yourself,they are for the young >>>>>>> To: [email protected], "WISPA General >>>>> List" <[email protected]> >>>>>>> Date: Friday, March 6, 2009, 9:51 AM >>>>>>> Not at all. We hide the holes behind a desk or >>>>> something >>>>>>> when ever >>>>>>> possible. You'll never notice them. Unlike a >>>>> big, >>>>>>> ugly wall plate. >>>>>>> >>>>>>> marlon >>>>>>> >>>>>>> ----- Original Message ----- From: "Joe >>>>> Miller" <[email protected]> >>>>>>> To: "WISPA General List" >>>>>>> <[email protected]> >>>>>>> Sent: Friday, March 06, 2009 6:40 AM >>>>>>> Subject: Re: [WISPA] Knowing when to stop doing >>>>> installs >>>>>>> yourself,they are >>>>>>> for the young >>>>>>> >>>>>>> >>>>>>>> >>>>>>>> Marlon, >>>>>>>> >>>>>>>> You are joking......right? >>>>>>>> >>>>>>>> >>>>>>>> --- On Fri, 3/6/09, Marlon K. Schafer >>>>>>> <[email protected]> wrote: >>>>>>>> >>>>>>>>> From: Marlon K. Schafer >>>>>>> <[email protected]> >>>>>>>>> Subject: Re: [WISPA] Knowing when to stop >>>>> doing >>>>>>> installs yourself, they >>>>>>>>> are for the young >>>>>>>>> To: "WISPA General List" >>>>>>> <[email protected]> >>>>>>>>> Date: Friday, March 6, 2009, 8:30 AM >>>>>>>>> Who uses wall plates anyway? We just try >>>>> to get >>>>>>> the hole >>>>>>>>> right at the top >>>>>>>>> of the baseboards. Then, someday when >>>>> all this is >>>>>>> gone and >>>>>>>>> some new >>>>>>>>> technology (TV band with no external >>>>> antenna?) >>>>>>> replaces it >>>>>>>>> they'll just have >>>>>>>>> to plug one small hole and give it a dab >>>>> of paint! >>>>>>>>> marlon >>>>>>>>> >>>>>>>>> ----- Original Message ----- >> >>>>> From: "Scott Reed" >>>>>>>>> <[email protected]> >>>>>>>>> To: "WISPA General List" >>>>>>>>> <[email protected]> >>>>>>>>> Sent: Thursday, March 05, 2009 9:08 AM >>>>>>>>> Subject: Re: [WISPA] Knowing when to stop >>>>> doing >>>>>>> installs >>>>>>>>> yourself, they are >>>>>>>>> for the young >>>>>>>>> >>>>>>>>> >>>>>>>>>> Don't they still make plates >>>>> with just a >>>>>>> 1/4" >>>>>>>>> hole in it. No need to >>>>>>>>>> drill. >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> George Rogato wrote: >>>>>>>>>>> I was trying to drill a hole >>>>> into a blank >>>>>>> wall >>>>>>>>> plate. All of the sudden, >>>>>>>>>>> it shattered into about 10 >>>>> pieces. >>>>>>>>>>> >>>>>>>>>>> That happens a lot with a >>>>> typical >>>>>>> bakerlite type >>>>>>>>> wall plate. >>>>>>>>>>> >>>>>>>>>>> Next time you buy blank plates, >>>>> try to >>>>>>> find the >>>>>>>>> lexan flexible ones. >>>>>>>>>>> Everyone makes them, they are >>>>> rubber like >>>>>>> and when >>>>>>>>> you drill a hole in >>>>>>>>>>> it, it doesn't crack or >>>>> shatter. >>>>>>>>>>> They come in white ivory etc and >>>>> like I >>>>>>> said, >>>>>>>>> everyone makes them , >>>>>>>>>>> Leviton, eagle, p&s, hubble >>>>> etc. >>>>>>>>>>> >>>>>>>>>>> They cost no more. >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>> >>>>>>> >>>>> >>>> --- >>>> --- >>>> --- >>>> --- >>>> -------------------------------------------------------------------- >>>>>>>>>>> WISPA Wants You! 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