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Discuss Issue with cat 6 connection in the Electrical Forum area at ElectriciansForums.net

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Hey guys
I installed a cat 6 ftp cable last week around 50metres. It goes from one cat6 faceplate to another. When I originally tested the connection it was fine with my network tester,we tested with a couple of cat 5e patch leads to check connectivity and was fine. Today the customer has brought a couple of cat 6 patch leads and re tested (getting no connection). I popped out tonight and tested the line with my tester and getting nothing, would you point towards it being a module issue as the tester would pick up open circuits so I know it’s not that.
From your experience what would you guess it could be.
 
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Deleted member 105166

Sounds like some damage has occurred somewhere along the 50m of cable. Are other trades working on the site?
 
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  • #3
No other trades although it does have a couple bends as it was installed in conduit to outside wall as it goes from the house to barn down the garden. I understood the tester would pick up any open circuits along the run. I’m praying there ain’t a break in the cable haha
 
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Deleted member 105166

So when you installed it last week, you had continuity on all four pairs and today you have used the same instrument and get no continuity on any of the four pairs? Have you checked the punchdowns on each of the face plates are still intact? Have you checked everywhere the cable enters and exits the conduit for damage?
 
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  • #5
I have pal was continuity last week but nothing today at all, repunched them all and checked all where there may be kinks, obviously bar stripping the cable and checking the connections will be difficult to tell if there is damage anywhere, that’s why I’m aiming towards one of the modules which I will pop back and change, but just curious to see if there could be any others issues apart from the mods and hopefully not the cable.
So when you installed it last week, you had continuity on all four pairs and today you have used the same instrument and get no continuity on any of the four pairs? Have you checked the punchdowns on each of the face plates are still intact? Have you checked everywhere the cable enters and exits the conduit for damage?
 
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Deleted member 105166

I can't see how it is a module, if all pairs worked last week and none work today. Something has happened to that cable, it shouldn't be too difficult to find and is most likely to be where it isn't in conduit. At the barn end, check for rodent damage.
 

Strima

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Arms
Esteemed
I doubt it’s a module as they are normally a solid link from the punch down to the socket. Tony has suggested rodent damage to the cable which is pretty common.
 
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  • #8
If it was a break in the cable would the tester which is only a cheap network tester from Screwfix (does the job) not show an open circuit which it is there to detect. I would be very unlucky to have all pairs broken. No rodent damage to barn to cable from what I can see, I could carry out a continuity test on all the pairs to check for any breaks in the cable.
 
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Deleted member 105166

As an aside, how many Cat6 runs have you got in that conduit? Always best to install data cabling in pairs and if in a higher risk environment such as yours, as Cat5/6 is cheap as chips, it doesn't hurt to run a spare line in the conduit to future proof. If you can't find and fix it, can you use the existing cable as a draw string to pull new runs through?
 
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  • #11
I really can’t see where it would be broken (obviously not ruling it out) it’s encased in conduit outside before it enters the loft and clipped round and down to dining area, it’s just strange how it’s lasted 3 days then completely packed up. I think your right sparky chick that external duct cable should have being used to maybe give better protection. (Lesson learnt) just hoping it’s a simple resolution this time.
 
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  • #13
Good idea that pal and one I will carry out in the future. If I do have replace the cable I could pull a new one in. (Just have to take a hit on the job and learn my lesson) tbf the cable I installed was cat6 ftp and cost around £110 for 305 metres so not the cheapest.
 

Strima

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Arms
Esteemed
Was the cable pure copper or copper coated aluminium?
 
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