5 installing premises cabling system
DESCRIPTION
Installing Premises Cabling SystemTRANSCRIPT
1
InstallingInstallingPREMISES CABLING SYSTEMPREMISES CABLING SYSTEM
2
Twisted Pair Installation Considerations
NEXTAttenuationReturn Loss
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3
Tensile Load/Installation Pull
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
5
Bend Radius
UTPno less than 4x
10x (multi-pair)
STPno less than
7.5cm (3”) non-plenum15cm (6”) plenum
6
Compression
Correct
Incorrect
7
EMI
8
Optical Fiber Installation Considerations
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9
Optical Fiber Installation Guidelines
15/20x=pulling10x=static
50lbs.
@700% greater than CAT5
10
Polarization
B
AB
A
B
BA
ANumber 1
Number 2
11
Cable Management - Rack Rear
12
Cable Management - Rack Front
13
Cable Management - “Towel Bar”
14
Cable Management - Cable Ties
15
Slack - Outlet
16
Slack - Rack
17
Horizontal Pathways
• Underfloor Duct• Cellular Floor• Conduit• Raised/Access Floor• Cable Trays and Wireways• Ceiling Pathways• Perimeter Pathways• Furniture Pathways
18
Underfloor Duct
19
Cellular Floor
20
Conduit 1
21
Conduit 2
TC
1”
1-1/2”
1-1/2”
InnerductPull Tape
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
23
Raised/Access Floor
24
Ceiling Pathways
11 ft/3.4mmax
T TT T TT
J J J J(4-5 ft/1220-1525mm)
25
Cabling Installations inCeilings and Access Floors
26
Cable Trays & Wireways
ChannelLadder
Solid-BottomVentilated/Trough
Wireway
27
Furniture Pathways & Installation
28
Perimeter Pathways
29
Vertical Pathway Cabling Installations
Conduit Sleeve
Strand
3-bolt Clamp
(Shoe or Pulley)
Conduit Sleeve
D-Rings or Straps
(Firestop)
30
IDC and Color Coding
White/Blue
Blue/White
White/Orange
Orange/White
White/Green
Green/White
White/Brown
Brown/White
Pair 4Pair 1 Pair 2 Pair 3
25 pair Color Code
RedBlack
Violet
WhiteWhite
YellowYellow
Wires with predominant family color are tip.Wires with predominantpair color are ring.
5th pair = Slate
31
Interconnection Hardware Installation
32
Wiring Patterns
2 3 4 5 6 7 82
3 1 4
2
2 3 4 5 6 7 82
2 1 4
3
2 3 4 5 6 7 82
3 4
2
1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8
T568A T568B/AT&T 258A
33
Wiring Patterns
Pin/Pair Assignment - T568A
1 2 3 4 5 6 7 8
Pair 2, (Orange)
Pair 3, (Green)
Pair 1, (Blue)
Pair 4, (Brown)
Pin/Pair Assignment - T568B
1 2 3 4 5 6 7 8
Pair 2, (Orange)
Pair 3, (Green)Pair 1, (Blue)
Pair 4, (Brown)
34
T568A Wiring Pattern
White/GreenPin 1
Green
White/Orange
Blue
White/Blue
Orange
White/Brown
Brown
Pin 2
Pin 3
Pin 4
Pin 5
Pin 6
Pin 7
Pin 8
Pair 1
Pair 3
Pair 4
Pair 2
35
T568B Wiring Pattern
White/OrangePin 1
Orange
White/Green
Blue
White/Blue
Green
White/Brown
Brown
Pin 2
Pin 3
Pin 4
Pin 5
Pin 6
Pin 7
Pin 8
Pair 1
Pair 2
Pair 4
Pair 3
36
Untwist and Jacket Removal