unsolved problem

[ktmhelp]

hello every1 i gotta query regarding the infrastructure sharing i.e. usually ethernet cable lay-outing are performed on the pole where a high tension line is running i mean under the electric lines so how is the possibility that the current on electric lines may have produced electric charges with the cables (cat5 or cat6) that may result in damages of our end system that may be a ata or even satellite receiver ethernet port.
and in our country there is a practice of laying cables 2m below the electric wires is there any standards ?????
similarly whats the possibility that the flow of surge from a computer or user end to the ata or even from that user through cables i.e.cat5 or cat6 into satellite receiver and damage its ethernet port?????

 

[Soundmanred]

Yes, of course.

 

[edro]

Electrons are your problem.
Have the local electrical utility open an investigation into whether or not electrons are in the lines.

 

[shortylickens]

Our first new member for June, ladies and gentlemen!!

:awe:

 

[Arik5405]

meow

 

[Juddog]

hello every1 i gotta query regarding the infrastructure sharing i.e. usually ethernet cable lay-outing are performed on the pole where a high tension line is running i mean under the electric lines so how is the possibility that the current on electric lines may have produced electric charges with the cables (cat5 or cat6) that may result in damages of our end system that may be a ata or even satellite receiver ethernet port.
and in our country there is a practice of laying cables 2m below the electric wires is there any standards ?????
similarly whats the possibility that the flow of surge from a computer or user end to the ata or even from that user through cables i.e.cat5 or cat6 into satellite receiver and damage its ethernet port?????

Too many question marks.

 

[Oil]

Here are a few periods: . . . . . .

Please take and input them into your post as needed.

Thanks

 

[PsiStar]

Your ethernet cables *are* inductively coupled to the power lines. In the US there are a plethora of stories about power being stolen from power companies with long runs of wire placed under the power lines.

In their case they are trying to get a useful amount of power. In your case, you want minimal to no power. So it is not a question of if there is coupling, but how much.

For the thieves, supposedly very long runs ... miles perhaps ... are required. What is/are the lengths of your runs under power lines?

What voltage is on the power lines? Lines carrying a great deal of power would be more of problem than those supplying single family homes.

My questions are more academic than directly useful for my directly solving your problem. But, if you had a talk with your power company, you might find someone that is useful.

 

[edro]

I'm not a communications engineer, but I assume outdoor communications lines are required to be shielded and any decent switchgear will have filters to stop transients and surge on the lines.

In your country, do they actually have standard indoor CAT5 running from the pole to your building? If so, that's your problem.

 

[DrPizza]

This might help:
http://www.youtube.com/watch?v=DNf8KtWeW1s

The longer the run, the greater the problem you're going to have.


edit: this might help more. Less explanation, but you can see the effects a lot better.
http://www.youtube.com/watch?v=2ODW-ntPHSU&playnext=1&list=PL8B8A8186492CC71D