Module Eight - Conductor Terminations and Splices - NCCER Substation Slides

Module Eight - Conductor Terminations and Splices - NCCER Substation Slides

1. Conductor Terminations and Splices Module Eight – 26208 -11

2. Upon completion of this module, you will be able to do the following: 1. Describe how to make a good conductor termination. 2. Prepare cable ends for terminations and splices and connect using lugs or connectors. 3. Train cable at termination points. 4. Understand the National Electrical Code ® ( NEC ® ) requirements for making cable terminations and splices. 5. Demonstrate crimping techniques. 6. Select the proper lug or connector for the job. Objectives

3. Under supervision of the instructor, you should be able to: 1. Terminate conductors using selected crimp-type and mechanical-type terminals and connectors. 2. Terminate conductors on a terminal strip. 3. Insulate selected types of wire splices and/or install a motor connection kit. Performance Tasks

4. Table 1 – Dimensions of Common Wire Sizes

5. Figure 4 – Heavy -duty cable stripper

6. Figure 5 – Types of cable stripping

7. Figure 7 – Chisel point on a conductor

8. Figure 9 – Proper stripping length

9. Figure 11 – Various mechanical compression connectors

10. Figure 12 – Method of installing heat-shrink insulators

11. Table 2 – Tubing Selector Guide

12. Figure 14 – Basic crimp connector structure

13. Figure 15 – Standard tongue styles of crimped connectors

14. Table 3 – Typical Color Codes

15. Figure 16 – Mechanical strength versus electrical performance of a crimped connector

16. Table 4 – Recommended Tightening Torques for Various Bolt Sizes

17. Figure 24 – Weatherproof connector used with Type MC cable

18. Figure 26 – Indent position

19. Figure 27 – Crimp centering

20. Figure 28 – Conductor positioning

21. Figure 29 – Terminal blocks

22. Figure 30 – Routing cabling

23. Figure 31 – Terminal bend radius

24. Table 5 – Minimum Wire Bending Space for Conductors Not Entering or Leaving Opposite Wall [Data from NEC Table 312.6(A ) ]

25. Figure 34 – Bending space at terminals is measured in a straight line

26. Figure 35 – Conductors entering an enclosure opposite the conductor terminals

27. Table 6 – Minimum Wire Bending Space for Conductors Entering or Leaving Opposite Wall [Data from NEC Table 312.6(B) ]

28. Figure 37 – MCC fed directly from a transformer secondary

29. Figure 38 – Typical method for taping motor lug connections

30. Figure 39 – Typical method of taping a split-bolt connector

31. Figure 40 – Stub and in-line splice connections

32. Figure 41 – Motor connection kits installed on splices

33. Supplemental Art

34. Figure 1 – Wire stripper/crimper

35. Figure 2 – Wire strippers

36. Figure 3 – Ratchet-type cable cutter

37. Figure 6 – Round cable slitting and ringing tool

38. Figure 8 – Cable and wire stripping tools

39. Figure 10 – Crimp-on wire lugs

40. Figure 13 – Fire alarm and instrumentation cable

41. Figure 17 – Hand crimpers

42. Figure 18 – Leveraged crimping tool

43. Figure 19 – Crimping tools used to crimp large connectors

44. Figure 20 – Battery-operated crimping tool

45. Figure 21 – Corded crimping tool

46. Figure 22 – Universal crimping tool

47. Figure 23 – Multiple crimps

48. Figure 25 – Labeled and terminated control cable

49. Figure 32 – Ratchet bender

50. Figure 33 – Hydraulic bender

51. Cable Strippers

52. Cutting Large Power Cable

53. Tightening Compression Connector Screws and Bolts

54. Electrical Tape