Right, but I have had at least one radio that was POE protected at entry and the 12AWG from the case to ground kept the Ethernet port from blowing.
Jim Patient wrote: > Scott, > > You might want to take a look at NEC 810. If you install an external > antenna mounting pole or mast, it must be grounded. The conductor > entry point must also be grounded (where the cat5 enters the > building). This isn't just good practice, it's the law and if you > don't follow the law you are setting yourself up for an ugly > negligence case in the event of a fire or other catastrophic event > that results from your installation. > > In Kurts' case, I would install a Citel PoE surge protector in the > enclosure with the radio. Install an external grounding block at the > conductor entry point. Use shielded cat5 with the trickle wire > grounded. Copper coated ground rods are available at most companies > that sell satellite installation hardware. > > In the attached picture, the radio survived this hit. Obviously the > Citel didn't;-) > > Jim > 314-565-6863 > jeffcosoho.com > > Scott Reed wrote: >> Since all you need is to bleed off the induced current, my normal way >> is to run 12AWG from the radio to the electrical ground rod. This >> has stopped a similar issue on a couple of radios for me. >> >> Kurt Fankhauser wrote: >> >>> I've got a problem client radio that almost always needs attention >>> after a >>> lightning storm. It is mounted with a gable mount on an eve so the >>> radio >>> itself is not physically grounded which I think is where my problem is >>> coming from. The cat5 wire is grounded with a tranzeo POE ground >>> lead but >>> that is not stopping the surges. I've got a RB532 board which has >>> lost 3 >>> ethernet ports due to surges on the POE line even while using the >>> tranzeo >>> POE's ground. Now I have never lost a radio at this location but I >>> have lost >>> 3 ethernet ports and 2 POE injectos. This last time around the radio >>> actually defaulted back to factory defaults. Radio is a TR-5a-21. Now I >>> suspect that if this radio was mounted to a TV tower and not the eve >>> that I >>> would not be having these problems since it would naturally be >>> grounded. >>> Anyone have any ideas on what I need to do to get this thing >>> grounded. How >>> heavy of guage do I need? >>> >>> >>> >>> Kurt Fankhauser >>> WAVELINC >>> P.O. Box 126 >>> Bucyrus, OH 44820 >>> 419-562-6405 >>> www.wavelinc.com >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> -------------------------------------------------------------------------------- >>> >>> >>> 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! 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/ -- Scott Reed Owner NewWays Networking, LLC Wireless Networking Network Design, Installation and Administration Mikrotik Advanced Certified www.nwwnet.net (765) 855-1060 -------------------------------------------------------------------------------- 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/
