DisasterGuy
Member
I am dealing with an issue with a site tenant. Does anyone have a standard reference for bonding CAT5/6 shield on a tower?
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Shielded CAT6 Bonding
- Thread starter DisasterGuy
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mmckenna
I ♥ Ø
I'm not sure if it's covered under the TIA/EIA rules. NEC would certainly apply.
Since the big risk is lightning, the standards/practices that apply to coaxial cable would apply also.
Ground the shield near the top of the tower.
Ground the shield near the bottom of the tower.
Ground the shield where it enters the enclosure.
Ground it at the equipment.
I've got a couple of cell sites here at work that are using RRU's that I could go look at if you need photos/proof, but there isn't any guarantee that these guys did it right.
More often what we are seeing is fiber/power going up the tower. Our DAS system is fiber based, but I think the macro cells are using Cat 5/6 from the hut up to the tower.
Since the big risk is lightning, the standards/practices that apply to coaxial cable would apply also.
Ground the shield near the top of the tower.
Ground the shield near the bottom of the tower.
Ground the shield where it enters the enclosure.
Ground it at the equipment.
I've got a couple of cell sites here at work that are using RRU's that I could go look at if you need photos/proof, but there isn't any guarantee that these guys did it right.
More often what we are seeing is fiber/power going up the tower. Our DAS system is fiber based, but I think the macro cells are using Cat 5/6 from the hut up to the tower.
DisasterGuy
Member
Thanks, I figured the same that applies to coax should apply to STP. This tenant has new LTE radios on the tower connected each with a fiber pair and a couple STP runs. The only protection is some APC (appears consumer grade) surpressors at the rack and bonded to the rack with #10AWG. I am used to bonding top, every 100', base, and building exterior and then surpressing at entry MGB.
My feet with their install is that a strike has no where to go but the rack and has a fair run to get back to the MGB exposing the other racks along the way.
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My feet with their install is that a strike has no where to go but the rack and has a fair run to get back to the MGB exposing the other racks along the way.
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DisasterGuy
Member
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mmckenna
I ♥ Ø
Yeah, I agree, that doesn't pass the sniff test. Seems like they are exposing your site to some risk.
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