Difference Between Shielded FTP and Unshielded UTP Cables: Grounding & Gel Cables Explained

Hello, I would like to know what is the difference between the FTP and UTP cable ... apparently one is shielded and the other is not, and the shielded one must be well grounded .. for it to work well ... how to professionally ground it .. and how to check if it is grounded? ?


Oh, and there are some gel cables - what are they for?


Thank you very much for the answers .. I will repay you Ł

Talibanczyk wrote:

screened

You meant to say shielded

Talibanczyk wrote:

and the shielded one must be well grounded.

Nothing needs to be warmed up
Greetings

UTP - Unshielded
FTP - Shielded with foil with the 9th core of the so-called drain (connected to the screen)
STP - shielded with a braid
SSTP - shielded like STP and additionally individually shielded each pair.
They are generally shielded better at greater distances in environments prone to high electromagnetic disturbance
(max what I was able to connect for 100Mb / s is 160 mb via Belden ftp cable)
Gelled cables are suitable for outdoor and underground applications (ugly to work with due to the gel sticking to everything)
There are different schools with grounding,
one is talking about one-way grounding
another with two-sided
and the principle of earthing distribution points enforces earthing for e.g. inter-point connections on both sides.
In the case of a line to a subscriber outlet, it is grounded only at the distribution point. Well, but through the grounding of subscriber devices connected to the PE wire, the cable is grounded here as well.
The dangers of double-sided earthing at large distances is the possibility of (sometimes large) equalizing currents flowing through the cable screen, not necessarily related to our computer network devices.
Greetings J.

I would like to add that if you do not ground any shielded cable, the effect will be opposite to the intended one. The screen will simply start to act as an antenna, catching all the noise in the environment and between the cables, and instead of leading them to the "ground" it will accumulate and amplify them, the effects are probably obvious ...

And one more thing, a shielded cable is considered a bit slower than UTP, but it only matters at speeds of Gbps.

To visualize the matter, I present a few photos in the attachment

PS -> adamjur1; are you sure about this SSTP? It seems to me that STP also has a common screen, apart from those on pairs.

Regards