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Originally Posted by dexman
At the bottom of each post is a bunch of boxes. The last two that I see say "Notify" and "Email Post". Do they appear for you as well?

Ok, got it. I thought the "Email Post" was if I wanted to have a copy of the post emailed to me. But, I have seen that there is a extra button to get replys sent as well.

Thanks!!

Les

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dexman,

I would bet that the FIOS cable is an armored drop (most likely aluminum shield) which is used for rodent protection, strength, and more importantly, so that they can locate the the buried line. Lightning probably entered where the cable is bonded to a locate terminal and followed it all the way to the ONT. Just my guess.

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Originally Posted by ffej010
dexman,

I would bet that the FIOS cable is an armored drop (most likely aluminum shield) which is used for rodent protection, strength, and more importantly, so that they can locate the the buried line. Lightning probably entered where the cable is bonded to a locate terminal and followed it all the way to the ONT. Just my guess.

Could not have said it better myself.

Les

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Originally Posted by ABLE1
Originally Posted by hbiss
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How does the surge protector take a hit that blows it out so it will save or give of itself to protect the downstream equipment when the Upstream is the KSU?? AND it was NOT damaged?? I jumpered the surge protection and all worked Ok.

Improper ground. The overvoltage was present on the ground wire, went back through the surge protectors and was taken care of by the internal surge protectors on the extension ports of the KSU thereby blowing the fuses in the surges.

-Hal

So your thinking that the #6 Copper cable that was run to the phone system by others was or is not connected properly to building structure or has some other bad connection??

Les

I would bet on it. Also, I've written extensively about system grounding and it should not be connected to the building structure. In many cases that would be the cause of the problem you encountered. The system and any surge protectors should be connected to the same electrical ground that the system line cord is connected to, preferably right at the receptacle.

-Hal


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I will look into it next week and report back findings.

Care to share a link your "writings"??

Thanks,

Les

Last edited by ABLE1; 07/27/14 01:26 PM.
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I'm on a tablet at the moment...

If you search "Partner Grounding" in the Avaya-Lucent forum with a target date of 7/4/06, a link to a discussion on grounding that was posted by Hal will be displayed.


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Hal,

Thanks I got it.

Also like the tip on the DTK-3GTP. It seems they have since dropped the -X from the part number. Will use that in the future for sure.

Thanks again.

Have a good week.

Les

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FO drop cable, here in western PA, is made up of aramid and kevlar for aerial drops and the underground has an aluminum alloy overwrap to protect against backfill stones and sharp debris as well as varmint control. However, if the aerial cable is wet, a near lightning strike can travel the wet "non conductive" cable right to the ONT. Of course, if the armored FO is hit, the overwrap will conduct the lightning directly to the ONT.

Some LECs use FO aerial drop cable with a figure 8 make-up. The strand is galvanized steel and is a wonderful lightning conductor.

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On alot of our FO drops that we have installed lately, we have pulled in a di-electric drop w/ a separate locate ground wire (all inside 3/4" UD) w/ the ground floating on both ends, just to avoid the chance of lightning damage. In fact, all of the cell sites around here require that on new construction.

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-Hal [/quote]

I would bet on it. Also, I've written extensively about system grounding and it should not be connected to the building structure. In many cases that would be the cause of the problem you encountered. The system and any surge protectors should be connected to the same electrical ground that the system line cord is connected to, preferably right at the receptacle.

-Hal [/quote]

Ok, more input.

I was on site today cleaning up the wiring and installing some different protection.

Here is what I have since found out.

The Line 2 that I perceived was dead from the Comcast Modem was in fact shorted at the Surgegate M9COM ports that were to be protecting the Lines before the KSU. This was determined by Comcast and the Tech just jumped into and out of a different port on the SurgeGate.

The #6 cable that I assumed went to building ground in fact just went to the KSU chassie ground point. The KSU is then grounded thru electrical ground as it passes thru a APC UPS plugged into Backup Power and Surge protection.

I reconfigured the wiring from the Comcast modem on the 66 Block so that I could install some ITW UP3P-235 connected to a ground bar and connected to the #6 Copper which I bonded to electrical ground.

Hope that makes sense. I think I got it as it should be.

What I still find amazing is that this spike or surge got thru the Comcast Modem with no damage, then blew out only the line 2 protector on the SurgeGate, then had to pass thru the KSU and blow out Extension port protection on the Surgegate MLLT1 2 port protector.
All the while "APARENTLY" not damaging the KSU or any of the extension phones.

BOGGLES the mind.

I am on to other windmills now. Ya'll have a good weekend.

Les

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