1. Cable Management

2. DATA CABLE IS SUSCEPTIBLE TO DAMAGE
INSTALLING CAT5 CABLE DOES NOT GUARANTEE CAT5 PERFORMANCE
HOW CABLE IS INSTALLED, NOT ONLY WHAT TYPE OF CABLE IS INSTALLED

3. IF CABLE NOT INSTALLED PROPERLY PROBLEMS WITH
ATTENUATION
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4. ANSI/TIA/EIA-568-A 10.6.3.2 SPECIFIES
APPROPRIATE CABLE MANAGEMENT MUST BE USED TO ELIMINATE
CABLE STRESS • UNTWISTING OF PAIRS
CABLE CINCHING • TWISTING OF CABLE
CABLE MUST ALSO BE INSTALLED TO MANUFACTURES SPECIFICATIONS

5. COVERED BY EIA/TIA-569 SECT.4.7 LISTED IN FOUR (4) SUBGROUPS :
SURFACE RACEWAY
COVERED BY EIA/TIA-569 SECT.4.7
LISTED IN FOUR (4) SUBGROUPS :
SURFACE RACEWAY
RECESSED RACEWAY
MOLDING RACEWAY
MULTICHANNEL RACEWAY

6. AGAIN CABLE MUST (BOTH COPPER & FIBRE) NOT BE PUT UNDER STRAIN
MAINTAIN A MINIMUM BEND RADIUS
BE SUPPORTED (REGARDLESS OF TYPE)
BE IN A SUITABLE ENVIRONMENT
PROTECTED FROM EMI (e.g. RFI) (COPPER ONLY)
(BOTH COPPER & FIBRE)

7. DON’TS
NEVER PULL CABLE DIRECTLY ACROSS SUSPENDED CEILING TILE OR ACROSS FLORESCENT LIGHT BOXES (EMI)
CABLE SHOULD NOT BE TIED TO CEILING GRIDWORK WIRES

8. WHAT NOT TO DO

9. MANAGEMENT TYPES
THERE ARE VARIOUS DIFFERENT TYPES OF CABLE MANAGEMENT EACH GIVING DIFFERENT DEGREES AND TYPES OF PROTECTION

10. CABLE TIES USED TO SECURE CABLE TO TRAYS, TRUNKING ETC.
NYLON, POLYPROPYLENE
RELEASABLE, NON-RELEASABLE
RIBBED INNER SURFACE TO SECURE CABLE

12. “J” HOOK BENEFITS DESIGNED FOR “HIGH PERFORMANCE” CABLE
USED SPARINGLY OVER SHORT RUNS
LIMITS THE NEED FOR CABLE TIES

13. “J” HOOKS SHOULD NOT BE USED AS A REPLACEMENT FOR CABLE TRAY

14. D-RINGS AS WITH J-HOOKS FOR SMALL BUNDLES OF CABLE
USED SPARINGLY OVER SHORT RUNS

15. A B THE J-HOOKS ARE NOT ADEQUATE SUPPORT HERE
THE CABLE IS UNDER STRESS AT POINTS A & B  A  B

16. CABLE LADDER
GALVANISED STEEL OR PVC
CABLE SECURED AT RUNGS

17. CABLE LADDER
WITH LARGE BUNDLES CABLE UNDER PRESSURE AT RUNGS BECAUSE ITS WEIGHT IS NOT DISTRIBUTED ALONG A RUN

18. CABLE BASKETS
AS WITH CABLE LADDERS CABLE WEIGHT NOT EVENLY DISTRIBUTED. BASKET IS CHEAPER AND EASIER TO INSTALL THAN LADDER

19. SNAKE TRAY
SIMILAR TO CABLE BASKET
FLEXIBLE
EASIER TO INSTALL?

20. FLEXIBLE

21. CABLE TRAYS GALVANISED STEEL OR PVC VARIOUS DIMENSIONS
MAY BE RESIZED WITH HACKSAW
ANGULAR INSERTS AVAILABLE

22. CABLE TRAYS PERFORATED BOTTOM HORIZONTAL & BACKBONE FLEXIBLE
EASY ACCESS TO CABLE
CURVED TRAYS
SUPPORTS WEIGHT OF CABLE ALONG WHOLE RUN

23. CONDUIT COMPLETELY ENCLOSED NO REMOVABLE LID GALVANISED STEEL PVC
ACCESS TO CABLE LIMITED

24. CONDUIT EMI PROTECTION OUTLET DENSITIES LOW MEDIUM TO LONG TERM
NEAT & AESTHETIC

25. TRUNKING SIMILAR TO CABLE TRAY BUT
REMOVABLE LID (BETTER PROTECTION) (EMI & RODENT)

26. TRUNKING
MORE DIFFICULT TO CUT (LID)
NEATER

27. RACEWAYS
SIMILAR TO TRUNKING
VISUALLY PLEASING
EASILY MODIFIED

28. POWER AND DATA CABLING

29. POWER AND DATA SEPARATION

31. MIN BEND RADIUS

32. A  DROPOUT PIECE ENSURES MIN BEND RADIUS IS MAINTAINED
PRESSURE AT RUNG A IS ALLEVIATED  A

33. CABLE TRAY ASSEMBLIES

34. What is EMI? ELECTRO MAGNETIC INTERFERENCE
DESCRIBES ALL KINDS OF ELECTRICAL AND MAGNETIC INTERFERENCE
EMI IS A FIELD THAT EMANATES FROM ‘LIVE’ CONDUCTORS
CAN TRAVEL LARGE DISTANCES AND INTERFERE WITH OTHER CONDUCTORS
RFI (RADIO FREQUENCY INTERFERENCE)
98FM CAN INTERFERE WITH CONDUCTORS

35. Sources of EMI
SOME ‘LIVE’ CONDUCTORS CAN CAUSE MORE INTERFERENCE THAN OTHERS
DEPENDS ON SEVERAL FACTORS, SUCH AS THE AMOUNT OF CURRENT THEY ARE CARRYING AND THE AMOUNT OF SCREENING AROUND THE CONDUCTOR
FLUORESCENT LIGHTING, SUBSTATIONS, MOTORS, SWITCH MODE POWER SUPPLIES

36. Vulnerability
SOME CONDUCTORS CAN PICK UP INTERFERENCE MORE EASILY THAN OTHERS
UTP IS PARTICULARLY VULNERABLE TO PICKING UP EMI
SCREENED CONDUCTORS OR CONDUCTORS IN EARTHED ENCLOSURES ARE LESS VULNERABLE BUT HAVE TO BE CAREFUL
FIBRE IS IMMUNE TO EMI

37. EN 50174
MAKES THE FOLLOWING RECOMMENDATIONS

38. } En 50174 EUROPEAN STANDARD SUBMITTED TO CENELEC THREE PARTS
SPECIFICATION
IMPLEMENTATION
OPERATIONS }
OF INFORMATION
TECHNOLOGY CABLING,
BOTH COPPER & FIBRE

40. EMI PERFORMANCE DIFFERS WITH THE DIFFERENT TRAY TYPES

41. THE BUNDLE HEIGHT INTO THE CABLE TRAY SHALL BE LOWER THAN THE SIDE WALLS AS ILLUSTRATED ABOVE
OVERLAPPING LIDS PROVIDE MORE PROTECTION
DEEP CONDUITS ARE PREFERRED

42. CABLE SUPPORT
PROPER CAT 5 PERFORMANCE WILL ONLY BE ACHIEVED WITH CAREFUL CABLE INSTALLATION AND ADEQUATE SUPPORT
MAKE SURE “YOUR” INSTALLATIONS ARE NOT PART OF THE 80 % THAT WILL NOT SUPPORT TRANSMISSION IN THE FUTURE OF 100 Mbps AND BEYOND