Back
  • UTP CABLING INSTALLATION PRACTICES

    • To avoid stretching, pulling tension should not exceed 110N (25 lb ƒ ) for 4-pair cables.
    • Installed bend radii shall not exceed: 
           - 4 times the cable diameter for horizontal UTP cables.
           - 10 times the cable diameter for multi-pair backbone UTP cables.
    • Avoid cable stress, as caused by: 
           - cable twist during pulling or installation 
           - tension in suspended cable runs 
           - tightly cinched cable ties or staples 
           - tight bend radii
    • Horizontal cables should be used with connecting hardware and patch cords (or jumpers) of the same performance category or higher.
    • Important Note: Installed UTP cabling shall be classified by the least performing component in the link.

    Do's:

    • Use connecting hardware that is compatible with the installed cable.
    • Terminate each horizontal cable on a dedicated telecommunications outlet.
    • Locate the main cross-connect near the center of the building to limit cable distances.
    • Maintain the twist of horizontal and backbone cable pairs up to the point of termination.
    • Tie and dress horizontal cables neatly and with a minimum bend radius of 4 times the cable diameter.
    • Place cabling at a sufficient distance from equipment that may generate high levels of electromagnetic interference.

    Don'ts:

    • Do not use connecting hardware that is of a lower category than the cable being used.
    • Do not create multiple appearances of the same cable at several distribution points (called bridged taps).
    • Do not locate cross-connects where cable distances will exceed the maximum.
    • Do not leave any wire pairs untwisted.
    • Do not over-tighten cable ties, use staples, or make sharp bends with cables.
    • Do not place cable near equipment that may generate high levels of electromagnetic interference.