How do you properly join cat5 wire 
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Posted by decaturtxcowboy on November 26, 2006, 11:30 am
Please log in for more thread options Robert Redelmeier wrote: >
> No, I think this thread has been _extremely_ short > considering it is a question of violating standards. > Something that works now vs something that works later. > > This is exactly the sort of "gotcha" that emerges in a few > years when someone puzzles over why gigabit is slow, and a > tech like us spends time finding the hidden splice. > > Standards have excellent reason. Violating them can also > make sense. With no intent to disparage anyones' contributions to the NG, I see the replies as insight from different directions. There's no argument that sticking a splice up in the ceiling is not the best idea from the "best practices" standpoint, but it might be the only solution in a few rare situations. It certainly does not violate any formal EIA or NEC standard. Case in point, this is exactly what I had to do last week. I had to extend two each thirty foot CAT5 cables that had been installed before a wall was added and it was now impossible to simply run new cable. I terminated the existing cables with a CAT5 jack and the new extensions with a modular plug and CLEARLY made a note on the backboard those two cables had a splice in the ceiling. | ||||||||||||||||||||||||||||||||||||||||
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Posted by Robert Redelmeier on November 27, 2006, 1:18 pm
Please log in for more thread options > There's no argument that sticking a splice up in the ceiling is not
> the best idea from the "best practices" standpoint, but it might be the > only solution in a few rare situations. > It certainly does not violate any formal EIA or NEC standard.
This is the debateable part: EIA 568 calls for structured cabling to be up to 90m of unbroken cable. Field termination on jacks. Head end on jacks or an interconnect block (110) further run to jacks. Interconnect is from the 10m patchcord allowance. A splice (or coupler) would only fit if you considered it "an interconnect block". Since they're often 110 parts, they might qualify. > extend two each thirty foot CAT5 cables that had been installed
> before a wall was added and it was now impossible to simply run > new cable. I terminated the existing cables with a CAT5 jack and > the new extensions with a modular plug I don't like jacks/plugs. Nests of crosstalk made for quick connect/disconnect. Not reliable enough to be buried anywhere. In the few occasions I've spliced, I use a C4 on a bit of broken 110 seat. Then loop and Tye-Rap (ouch!) for strain handling. > and CLEARLY made a note on the backboard those two cables
> had a splice in the ceiling. Never though of writing on the back board. I labeled the cable on both ends with orange tape marked "SPLICED". -- Robert | ||||||||||||||||||||||||||||||||||||||||
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Posted by DLR on November 28, 2006, 12:41 pm
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> with a modular plug and CLEARLY made a note on the backboard those two
That's cheating. It's more fun to figure out these things by crawling
> cables had a splice in the ceiling. > through 1" of dust in an old closet tracing wires. | ||||||||||||||||||||||||||||||||||||||||
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Posted by Carl Navarro on November 26, 2006, 12:34 pm
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On Sun, 26 Nov 2006 16:05:28 GMT, Robert Redelmeier >> This thread has gone pretty far considering it is a simple
>> matter to Google Cat 5e couplers. >
I didn't see splice in the thread.
>No, I think this thread has been _extremely_ short >considering it is a question of violating standards. >Something that works now vs something that works later. > >This is exactly the sort of "gotcha" that emerges in a few >years when someone puzzles over why gigabit is slow, and a >tech like us spends time finding the hidden splice. > It's a coupler. Standards say that you NEVER splice a Cat5 cable. I would have used the plan where you terminate the cable on jacks and use a patch cord if I couldn't replace the run. In practice, I have never spliced a data in 10 years or so of running Cat5 cable, but I have extended data runs with visible jacks(or moved a server or drop) lots of times. Now voice cables are different and usually involve 709SD splices behind a jack. Carl | ||||||||||||||||||||||||||||||||||||||||
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Posted by decaturtxcowboy on November 26, 2006, 3:00 pm
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Carl Navarro wrote: > It's a coupler. Standards say that you NEVER splice a Cat5 cable.
Right...you can't "splice" is by soldering, crimping, or scotch locking the conductors together. I don't think he even had that in mind. | ||||||||||||||||||||||||||||||||||||||||
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>> matter to Google Cat 5e couplers.