What is the color of the second wire pair in UTP wiring?

The second wire pair in Unshielded Twisted Pair (UTP) wiring is represented by the color combination of orange-white and orange, which corresponds to the choice of orange-white. UTP cabling typically follows a standardized color-coding scheme that helps ensure consistency in wiring, especially for applications involving Ethernet and telecommunications.

In this color-coding scheme as per the TIA/EIA standards, the first pair is blue with blue-white, the second pair is orange with orange-white, the third pair is green with green-white, and the fourth pair is brown with brown-white.

Understanding these color conventions is essential for anyone working with networking cabling because it aids in troubleshooting, installation, and maintenance tasks. While the color blue-white does appear in the context of UTP wiring, it is associated with the first pair rather than the second. Therefore, it is crucial to recognize the specific pair assignments for effective and accurate cable management.