5 Installing Premises Cabling System

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Installing Premises Cabling System

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5 Installing Premises Cabling System

  1. 1. Installing PREMISES CABLING SYSTEM 1
  2. 2. Twisted Pair Installation Considerations NEXT Attenuation Return Loss PSNEXT ELFEXT 2
  3. 3. Tensile Load/Installation Pull 3
  4. 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. 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. 6. Compression Correct Incorrect 6
  7. 7. EMI 7
  8. 8. Optical Fiber Installation Considerations NEXT Attenuation Return Loss PSNEXT ELFEXT 8
  9. 9. Optical Fiber Installation Guidelines 15/20x=pulling 10x=static 50lbs. @700% greater than CAT5 9
  10. 10. Polarization B A B A Number 1 Number 2 A B A B 10
  11. 11. Cable Management - Rack Rear 11
  12. 12. Cable Management - Rack Front 12
  13. 13. Cable Management - “Towel Bar” 13
  14. 14. Cable Management - Cable Ties 14
  15. 15. Slack - Outlet 15
  16. 16. Slack - Rack 16
  17. 17. Horizontal Pathways • Underfloor Duct • Cellular Floor • Conduit • Raised/Access Floor • Cable Trays and Wireways • Ceiling Pathways • Perimeter Pathways • Furniture Pathways 17
  18. 18. Underfloor Duct 18
  19. 19. Cellular Floor 19
  20. 20. Conduit 1 20
  21. 21. Conduit 2 TC 1” 1-1/2” 1-1/2” Pull Tape Innerduct 21
  22. 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. 23. Raised/Access Floor 23
  24. 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. 25. Cabling Installations in Ceilings and Access Floors 25
  26. 26. Cable Trays & Wireways Channel Ladder Solid-Bottom Ventilated/Trough Wireway 26
  27. 27. Furniture Pathways & Installation 27
  28. 28. Perimeter Pathways 28
  29. 29. Vertical Pathway Cabling Installations 3-bolt Clamp (Shoe or Pulley) D-Rings or Straps Conduit Sleeve Conduit Sleeve (Firestop) Strand 29
  30. 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. 31. Interconnection Hardware Installation 31
  32. 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. 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. 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. 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. 36. Untwist and Jacket Removal 36

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