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5 Installing Premises Cabling System
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5 Installing Premises Cabling System

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Installing Premises Cabling System

Installing Premises Cabling System

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  • 1. Installing PREMISES CABLING SYSTEM 1
  • 2. Twisted Pair Installation Considerations NEXT Attenuation Return Loss PSNEXT ELFEXT 2
  • 3. Tensile Load/Installation Pull 3
  • 4. Tensile Load/Installation Pull Guidelines • Limit 90º bends in conduit to 2 • Cable should not be pulled through a length of conduit exceeding 30m (100 ft) • Support cables every 4 - 5 ft (1200mm - 1500mm) • Avoid sharp objects, turns and corners • Use a pulley or a third man at turns and corners • Do not “jerk” cable • Pull around obstructions (HVAC) as required 4
  • 5. Bend Radius UTP STP no less than 4x no less than 10x (multi-pair) 7.5cm (3”) non-plenum 15cm (6”) plenum 5
  • 6. Compression Correct Incorrect 6
  • 7. EMI 7
  • 8. Optical Fiber Installation Considerations NEXT Attenuation Return Loss PSNEXT ELFEXT 8
  • 9. Optical Fiber Installation Guidelines 15/20x=pulling 10x=static 50lbs. @700% greater than CAT5 9
  • 10. Polarization B A B A Number 1 Number 2 A B A B 10
  • 11. Cable Management - Rack Rear 11
  • 12. Cable Management - Rack Front 12
  • 13. Cable Management - “Towel Bar” 13
  • 14. Cable Management - Cable Ties 14
  • 15. Slack - Outlet 15
  • 16. Slack - Rack 16
  • 17. Horizontal Pathways • Underfloor Duct • Cellular Floor • Conduit • Raised/Access Floor • Cable Trays and Wireways • Ceiling Pathways • Perimeter Pathways • Furniture Pathways 17
  • 18. Underfloor Duct 18
  • 19. Cellular Floor 19
  • 20. Conduit 1 20
  • 21. Conduit 2 TC 1” 1-1/2” 1-1/2” Pull Tape Innerduct 21
  • 22. Ducts and Conduit Guidelines • Fiber and copper pulled in separate conduit − Use innerduct if in same conduit • Clear internal obstructions, ream conduit ends, and use bushings • Pull all cable at same time, if possible • Use a partner at the entry point • Use lubricants if necessary (do not use petroleum-based) • Pull in a continuous manner without stopping • Do not pull a pull line through at the same time as the cable • Do not pull a terminated cable through the conduit • If pull boxes are used, pull to the first box, coil up the cable, then feed it back into the pull box and then pull through to the next one 22
  • 23. Raised/Access Floor 23
  • 24. Ceiling Pathways J J J J (4-5 ft/1220-1525mm) T T T T T T 11 ft/ 3.4m max 24
  • 25. Cabling Installations in Ceilings and Access Floors 25
  • 26. Cable Trays & Wireways Channel Ladder Solid-Bottom Ventilated/Trough Wireway 26
  • 27. Furniture Pathways & Installation 27
  • 28. Perimeter Pathways 28
  • 29. Vertical Pathway Cabling Installations 3-bolt Clamp (Shoe or Pulley) D-Rings or Straps Conduit Sleeve Conduit Sleeve (Firestop) Strand 29
  • 30. IDC and Color Coding White/ Blue/ White/ Orange/ White/ Green/ White/ Brown/ Blue White Orange White Green White Brown White Pair 1 Pair 2 Pair 3 Pair 4 25 pair Color Code White Wires with predominant 5th pair = Slate Red family color are tip. Black Wires with predominant Yellow pair color are ring. Violet 30
  • 31. Interconnection Hardware Installation 31
  • 32. Wiring Patterns 2 3 3 1 4 2 1 4 2 2 3 4 5 6 7 8 2 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 T568A T568B/ AT&T 258A 32
  • 33. Wiring Patterns Pin/Pair Assignment - T568A Pin/Pair Assignment - T568B Pair 1, (Blue) Pair 1, (Blue) Pair 2, (Orange) Pair 3, (Green) Pair 3, (Green) Pair 4, (Brown) Pair 4, (Brown) Pair 2, (Orange) 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 33
  • 34. T568A Wiring Pattern Pin 1 White/Green Pair 3 Pin 2 Green Pin 3 White/Orange Pin 4 Blue Pair 2 Pair 1 Pin 5 White/Blue Pin 6 Orange Pin 7 White/Brown Pair 4 Pin 8 Brown 34
  • 35. T568B Wiring Pattern Pin 1 White/Orange Pair 2 Pin 2 Orange Pin 3 White/Green Pin 4 Blue Pair 3 Pair 1 Pin 5 White/Blue Pin 6 Green Pin 7 White/Brown Pair 4 Pin 8 Brown 35
  • 36. Untwist and Jacket Removal 36

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