BS 6977:1991

Foreword
Committees responsible
Specification
Section one. General
1. Scope
2. References
3. Definitions
4. Voltage designation
5. Core identification
6. Marking
7. Dimensional test methods
8. Electrical test requirements and test methods
9. Mechanical strength test requirements and test
    methods
10. Durability of marking
Section two. Requirements for rubber-insulated, circular,
flexible cables with 4 to 48 cores
11. Harmonized code designations
12. Rated voltage
13. Construction
14. Conductors
15. Insulation
16. Core identification
17. Fillers
18. Textile braid on core insulation, over assembled
    cores and as overall protection
19. Sheath
20. Particular requirements
21. Testing
22. Preferred types of cable
Section three. Requirements for rubber-insulated and
sheathed, flat, flexible cables with 3 to 18 cores
23. Rated voltage
24. Construction
25. Conductors
26. Insulation
27. Core identification
28. Sheath
29. Particular requirements
30. Testing
Section four. Requirements for PVC-insulated, circular,
flexible cables with 4 to 72 cores
31. Rated voltage
32. Construction
33. Conductors
34. Insulation
35. Core identification
36. Fillers
37. Textile braid over assembled cores
38. Sheath
39. Particular requirements
40. Testing
Section five. Requirements for PVC-insulated, PVC-
sheathed, flat, flexible cables with 3 to 24 cores
41. Harmonized code designations
42. Rated voltage
43. Construction
44. Conductors
45. Insulation
46. Core identification
47. Sheath
48. Particular requirements
49. Testing
Section six. Requirements for rubber-insulated, circular
flexible cables with 36 to 72 cores having strain-bearing
centre
50. Rated voltage
51. Construction
52. Conductors
53. Insulation
54. Core identification
55. Fillers
56. Textile braid on core insulation, over assembled
    cores and as overall protection
57. Particular requirements
58. Testing
Appendices
A. Core identification by numbers
B. Solderability test
C. Recommendations for the installation of the cables
    specified in section two: rubber-insulated, circular,
    flexible cables with 4 to 48 cores
D. Recommendations for the installation of the cables
    specified in section three: rubber-insulated and
    sheathed, flat, flexible cables with 3 to 18 cores
E. Recommendations for installation of the cables
    specified in section four: PVC-insulated, circular,
    flexible cables with 4 to 72 cores
F. Recommendations for installation of the cables
    specified in section five: PVC-insulated, PVC-
    sheathed, flat, flexible cables with 3 to 24 cores
G. Recommendations for installation of the cables
    specified in section six: rubber-insulated, circular,
    flexible cables with 36 to 72 cores having strain-
    bearing centre
Tables
1. Particulars of rubber-insulated, circular, flexible
    cables
2. Preferred designs of rubber-insulated flexible
    cables
3. Summary of electrical tests for rubber-insulated,
    circular, flexible cables with 4 to 48 cores
4. summary of non-electrical tests for rubber-insulated,
    circular, flexible cables with 4 to 48 cores
5. Typical formations for rubber-insulated and sheathed,
    flat, flexible cables
6. Thickness of insulation and sheath for rubber-
    insulated and sheathed, flat, flexible cables
7. Summary of electrical tests for rubber-insulated and
    sheathed, flat, flexible cables with 3 to 18 cores
8. Summary of non-electrical tests for rubber-insulated,
    flat, flexible cables with 3 to 18 cores
9. Particulars of PVC-insulated, circular, flexible
    cables
10. Summary of electrical tests for PVC-insulated,
    circular, flexible cables with 4 to 72 cores
11. Summary of non-electrical tests for PVC-insulated,
    circular, flexible cables with 4 to 72 cores
12. Thickness of insulation and sheath for PVC-insulated,
    PVC-sheathed, flat, flexible cables
13. Summary of electrical tests for PVC-insulated, PVC-
    sheathed, flat, flexible cables with 3 to 24 cores
14. List of non-electrical tests for PVC-insulated,
    PVC-sheathed, flat, flexible cables with 3 to 24
    cores
15. Summary of electrical tests for rubber-insulated,
    circular, flexible cables with 36 to 72 cores having
    strain-bearing centre
16. List of non-electrical tests for rubber-insulated,
    circular, flexible cables with 36 to 72 cores having
    strain-bearing centre
17. Axial marks
18. Transverse marks
Figures
1. Positions for first measurement of insulation
    thickness
2. Position for measurement of sheath thickness
3. Positions of point of intersection of the cross-
    wires of the measuring microscope
4. Static flexibility test
5. Electrical wiring for test under fire conditions
6. Sheath thickness of PVC-sheathed flat, flexible
    cables
7. Axial arrangement of core-numbering marks
8. Transverse arrangement of core-numbering marks