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TWISTED-PAIR CABLING INSTALLATION PRACTICES

  • To avoid stretching, pulling tension should not exceed 110N (25 lbâ) for 4-pair cables.
  • Installed bend radii shall not exceed:
    • 4 times the cable diameter for horizontal UTP cables under no load conditions.
    • 8 times the cable diameter for horizontal ScTP cables.
    • 10 times the cable diameter for multi-pair backbone twisted-pair cables under no load conditions.
  • Horizontal cables should be used with connecting hardware and patch cords (or jumpers) of the same performance category or higher.
  • 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
  • Important Note: Installed twisted-pair cabling shall be classified by the least performing component in the link.