[Q] Why are the wires inside of CAT 5 Cable color-coded?
[A]The color coding of twisted pair cabling uses a color pattern that identifies what conductors make up a pair, and what sequence the pair is relative to the total number of pairs.
This is also used to determine which conductor is the tip (positive), and which conductor is the ring (negative).
Because there are many cable types other than CAT 5, we will focus on its color code system rather than trying to cover every color code for every cable type.
The EIA color code for CAT 5 Cable is as follows:
Pair 1 - White/Blue and Blue
Pair 2 - White/Orange and Orange
Pair 3 - White/Green and Green
Pair 4 - White/Brown and Brown
The individual pairs have a different tightness/angle of twist, known as the twist ratio. The twist ratio of each pair is slightly different from the other pairs by design to prevent one pairs signal from effecting another, a phenomenon known as cross talk.
The standards EIA/TIA 568A and 568B discuss the placement of these pairs in the proper order for CAT 5 networking applications.
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FAQ QUESTION: What
is the difference between the TIA/EIA standards 568-A and
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