Hello Mark, We've been running cable like this at several HUB sites for more than 5 years now. We do have lots of lightning and storms here in North Texas and have either been extremely lucky (not likely) or our installation methods have been satisfactory.
PoE hasn't been an issue over 25pr CAT5 cable. Keeping the pairs together IS important, meaning don't split a pair apart no different than you'd split a pair apart in a single CAT5 cable. We take the leftover "Slate Colored" pairs out of each "master bundle" (e.g. the White-Red-Black-Yellow-Violet) and use them for the sixth CAT5 cable. We have not seen any Ethernet or PoE problems with this Slate bundle for the 6th CAT5 cable. So for example, in the White bundle punch down the Blue, Orange, Green and Brown pairs just as you would normally in your panel. Then move on to the Red bundle, etc, etc. You'll be left with: White bundle Slate pair (punch down as your 6th CAT5 cable Blue Pair) Red bundle Slate pair (punch down as your 6th CAT5 cable Orange Pair) Black bundle Slate pair (punch down as your 6th CAT5 cable Green Pair) Yellow bundle Slate pair (punch down as your 6th CAT5 cable Brown Pair) Violet bundle Slate pair (Unused Spare Pair) In the NEMA4 enclosure topside we punch the 25pr down into something like this. One of these will handle two 25pr CAT5 cables. http://cgi.ebay.com/Cat5e-12-Port-Wall-Mount-Patch-Panel-Cat-5e-W-Bracket_W0 QQitemZ130306652481 I'm not a master electrician, but I don't see how one cable vs. several cables would pose a greater lightening risk. Best, Brad -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Mark Nash Sent: Thursday, May 28, 2009 11:42 AM To: WISPA General List Subject: Re: [WISPA] Tower Cat5 Bundles WAS: Re: Ethernet Cabling Thanks Brad. I remember that thread, and I just re-read all the posts that I didn't delete. So, in your experience, you feel it's OK for your equipment to run PoE through a 25-pair cat5 cable? We don't have much during the year here for lightning strikes...at all. Mark Nash UnwiredWest 78 Centennial Loop Suite E Eugene, OR 97401 541-998-5555 541-998-5599 fax http://www.unwiredwest.com ----- Original Message ----- From: "Brad Belton" <[email protected]> To: "'WISPA General List'" <[email protected]> Sent: Thursday, May 28, 2009 9:21 AM Subject: Re: [WISPA] Tower Cat5 Bundles WAS: Re: Ethernet Cabling > This was discussed on this list as recent as 3-10-09 in the "Easy Ethernet > up the tower" thread, but here ya go again... > > > Run a 25pr CAT5 cable (or two if you need) up the tower and then break it > out into a punch down inside a NEMA4 enclosure on top. I believe Mohawk, > Superior Essex or both have armor jacketed outdoor cable for this purpose. > > Each 25pr cable is the equivalent of running six individual CAT5 cables. > (plus a spare pair) > > Punch down the cable in patch panels on both ends using the following color > code and you're good to go. > > http://en.wikipedia.org/wiki/25-pair_color_code > > Best, > > > Brad > > > -----Original Message----- > From: [email protected] [mailto:[email protected]] On > Behalf Of Mark Nash > Sent: Thursday, May 28, 2009 11:08 AM > To: WISPA General List > Subject: [WISPA] Tower Cat5 Bundles WAS: Re: Ethernet Cabling > > How about bundles of cat5's up a tower? I'm needing to run about 12 to 15 > cat5's up a leg of a water tower, using clamps & standoffs. Does anyone > have a recommendation for this? How have you done this before? Bundles of > so many routed through a rubber standoff mount? > > Mark Nash > UnwiredWest > 78 Centennial Loop > Suite E > Eugene, OR 97401 > 541-998-5555 > 541-998-5599 fax > http://www.unwiredwest.com > ----- Original Message ----- > From: "Tom DeReggi" <[email protected]> > To: "WISPA General List" <[email protected]> > Sent: Wednesday, May 27, 2009 6:25 PM > Subject: Re: [WISPA] Ethernet Cabling > > > > Michael, > > > > I see my last post was redundant to some comments others already made. But > > to answer your question... > > > > We use Superior Essex for critical infrastrucure. We use Shireen cable > > (allrfcables.com) for all other. > > Its depended whether you need a .45" dia cable or .18" cable, based on the > > hole size of the radio pass thru. > > > > Note the Mohawk is awesome cable from a durabilty and cost perspective. > But, > > we found it was to hard to work with, to put on the CAT5 ends. It required > > use of a dremel to grind off the outer cable. > > The Superior Essex did not have that problem, which is why we migrated to > > it. > > > > Tom DeReggi > > RapidDSL & Wireless, Inc > > IntAirNet- Fixed Wireless Broadband > > > > > > ----- Original Message ----- > > From: "Michael Baird" <[email protected]> > > To: "WISPA General List" <[email protected]> > > Sent: Wednesday, May 27, 2009 11:42 AM > > Subject: [WISPA] Ethernet Cabling > > > > > > > We are getting ready to order ethernet cabling, and looking at some > > > different options for the towers and client installs. I was wondering > > > what people here liked to use. Particularily I'm interested in what you > > > look for in shielding/water protection, should I get a flooded cable, if > > > so with what? Will the gel filled type overheat in the sun? Should i run > > > all of this in conduit, at least for the AP's at the towers? > > > > > > Regards > > > Michael Baird > > > > > > > > > > -------------------------------------------------------------------------- > ------ > > > WISPA Wants You! Join today! > > > http://signup.wispa.org/ > > > > -------------------------------------------------------------------------- > ------ > > > > > > WISPA Wireless List: [email protected] > > > > > > Subscribe/Unsubscribe: > > > http://lists.wispa.org/mailman/listinfo/wireless > > > > > > Archives: http://lists.wispa.org/pipermail/wireless/ > > > > > > > > -------------------------------------------------------------------------- > ------ > > WISPA Wants You! 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