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Topic:
Grounding Shielded Twisted Pair
This thread has 35 replies. Displaying posts 31 through 36.
OP | Post 31 made on Tuesday September 4, 2018 at 21:25
InVision Systems
Long Time Member
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March 2010
119
Not exactly as I'm familiar with this material. The information and diagrams represent my understanding of this process. I guess the part I'm having a hard time with is why so many say not to ground on both sides. I'm not even sure how that is possible.
Elevate Technologies
Nashville, TN
Post 32 made on Tuesday September 4, 2018 at 23:24
Ernie Gilman
Yes, That Ernie!
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December 2001
30,104
You're sounding a bit like westom. "so many say not to ground" meaning exactly who? And where are the quotes or links so we can add our understanding to yours instead of shooting in the dark?

Are they talking about audio cables? THOSE do well to have a shield grounded at only one end.

And WHAT DOES THE MANUFACTURER SAY TO DO? I mean EXACTLY what have they said to do? Maybe they think they wrote something clear but it's not clear to you! That happens, you know. Read my friggin' signature.

If they haven't written it on their site, call them up!
A good answer is easier with a clear question giving the make and model of everything.
"The biggest problem in communication is the illusion that it has taken place." -- G. “Bernie” Shaw
Post 33 made on Wednesday September 5, 2018 at 00:40
Techsquad
Long Time Member
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August 2010
355
on my HDBT certification class I was told that Shielded CAT cable could bring more problems than advantages..... such as potential difference, when at the TV end you have a faulty ground, or a different voltage in that phase, these differences will be trying to come to equality via that shield. and that is a problem.
Post 34 made on Wednesday September 5, 2018 at 01:15
davidcasemore
Super Member
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January 2003
3,352
On September 4, 2018 at 21:25, InVision Systems said...
I guess the part I'm having a hard time with is why so many say not to ground on both sides.

The rack end of the shielded RJ-45 is grounded to the patch panel in the rack, and the rack is bonded to the copper bonding bar - just like in the diagram provide by Ernie.

The other end is usually a keystone RJ-45 jack connected to a PLASTIC plate, in a non-grounded mud ring.

One-sided grounding.
Fins: Still Slamming' His Trunk on pilgrim's Small Weenie - One Trunk at a Time!
OP | Post 35 made on Wednesday September 5, 2018 at 08:16
InVision Systems
Long Time Member
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March 2010
119
On September 5, 2018 at 01:15, davidcasemore said...
The rack end of the shielded RJ-45 is grounded to the patch panel in the rack, and the rack is bonded to the copper bonding bar - just like in the diagram provide by Ernie.

The other end is usually a keystone RJ-45 jack connected to a PLASTIC plate, in a non-grounded mud ring.

One-sided grounding.

Exactly what I was looking for.
Elevate Technologies
Nashville, TN
Post 36 made on Wednesday September 5, 2018 at 08:38
ericspencer
Active Member
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December 2011
536
[Link: cablinginstall.com]


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