Thread: Making a Cat 5 Cable
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February 29th, 2012 04:57 AM #16
Good post was thinking of doing something similar but never had the time. I just finished a job that we ran 16000 ft of Cat 5 including some plenum.
One thing I have noticed is that there seems to be a misconception in the industry about what is standard for the order of the 4 pairs and what they actually do.
When inserting the pairs holding the RJ45 connector with the clip facing down the correct order should be as follows (at least in the states):
1) white orange
2) orange
3) white green
4) Blue
5) white Blue
6) green
7) white brown
8) brown
The interesting thing is that the only pairs you actually need for an internet or network connection is pairs 1,2,3 & 6. (In other words you can actually make two connections out of one cable if you really wanted to)
Pair 4 and 5 are commonly used for POE or power over ethernet and the other spare pair 7 and 8 are also utilized for this in some cases.
Just wanted to share my knowledge since I run this cable on a daily basis for my company as well as utilize it for Surveillance Cameras to power them and send video.
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