Instrumentation cables have a wide range of usage in process control and data processes, in analog and digital signal transmission. Factories, refineries, petrochemical plants, power plants, natural gas filling plants, etc. make up the general areas that these cables are used.
Annex C (Normative)
Pair Identification: Two-pair cables without individual pair screens (quads) shall be color-coded in clockwise order of rotation: Black, blue, green, brown. All other cables up to 50 pairs shall be color-coded in accordance with Table C. 1.
Table C.1 Identification of cable pairs other than two -pair cables without individual pair screens (quads)
* For individually screened pairs: Black/Blue, Numbered pairs.
* Two-pair cables without individual pair screens (quads) shall be color-coded in clockwise order of rotation: Black, Blue, Green, Brown
* Single triple: Black- White-Red