24-core optical fiber cable wire sequence color

A 24-core optical fiber cable uses the standard 12-color sequence repeated for fibers 13–24, with optional stripe markings for unique identification.

Standard 12-Color Sequence

The TIA-598-C standard defines the following 12-color sequence for individual fiber strands:

1. Blue
2. Orange
3. Green
4. Brown
5. Slate (Gray)
6. White
7. Red
8. Black
9. Yellow
10. Violet
11. Rose (Pink)
12. Aqua

Extending to 24 Fibers

For a 24-core cable, the 12-color sequence repeats for fibers 13–24. To maintain unique identification, the second set of 12 fibers often includes a black stripe or other distinguishing mark on each fiber, depending on manufacturer practices: 13. Blue with stripe 14. Orange with stripe 15. Green with stripe 16. Brown with stripe 17. Slate (Gray) with stripe 18. White with stripe 19. Red with stripe 20. Black with stripe 21. Yellow with stripe 22. Violet with stripe 23. Rose (Pink) with stripe 24. Aqua with stripe This approach ensures that each fiber in the 24-core cable can be uniquely identified during splicing, termination, or testing, even though the base color sequence repeats .

Additional Notes

• In loose-tube cables, the same 12-color sequence may also be applied to buffer tubes, with each tube carrying its own set of fibers.
• For high-density ribbon cables, some European standards may use a 16-color sequence, but the 12-color TIA-598-C sequence is the most widely adopted globally.
• Proper identification of fibers is critical for data centers, FTTH deployments, and backbone networks, reducing errors and maintenance time . By following this standardized color-coding system, technicians can reliably trace and manage fibers in a 24-core optical fiber cable.