How to ground STP cat5e cable

August 19, 2009 at 12:38:09
Specs: Windows XP
I've been thinking of wiring up my house for ethernet. I have a ton of STP Cat5e cable given to me from a friend, and I want to use it. I've read that you need to ground the STP cable. This feels like a really stupid question, but... how exactly do you ground the cable?

When I strip the cable, I know there is a thin foil layer going around the cable... but how do I go about grounding that foil? I'm a real newbie at this, so please help me out. Thanks!

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August 19, 2009 at 14:08:11
Not sure you have what you think. Shouldn't be a shield on it.

Kind of depends. I know on a Navy ship you have to ground everything on both ends. On almost all industrial equipment the data lines are only grounded on one side.

I have never seen a ground on a cat5 but you may wish to be sure to look at your local building codes. Some have really odd deals.

I'd be more worried on the type of insulation. Be sure it is plentium grade and be sure not to ruin and firestops. Might run two lines or a spare line just in case you get a fail.

Playing to the angels
Les Paul (1915-2009)

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August 19, 2009 at 14:38:18
*sigh* *shakes head*

STP stands for shielded twisted pair and is the same as UTP but is SHIELDED against EMF.

My understanding is STP requires different patch panels/connections than UTP though I have never worked with STP

theblackhole you may wish to review this;

recommendation is both ends should be grounded.

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August 19, 2009 at 19:16:25
Funny, I read ONE side in capitol letters. Must be the Loop caution deal.

I doubt it is a true shield as in the industrial use. I doubt a home would possibly need a shield unless you run it over a fluorescent lamp or air compressor. If you maintain 2 feet away from junk you'd be fine.

You have to watch out with shields. I have seen many an instance where data issues were caused by not having a connection. This was all in rugged environments. You can also run into a major NEC issue with bonding and dual paths for current.

If you really have a shield and you want to use it. It has to be at least grounded on one end. To be safe, I wouldn't even attempt it since it is foil and not wire over foil. Unless you have wires over the foil you don't have a real shield that needs to be connected.

We run all of our can data with one end grounded.All ethernet is run in emt.

Playing to the angels
Les Paul (1915-2009)

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