Color Identification Codes​

Standard Identification Code – See Standard Identification Code Table.

Telephone Identification Code – Conductor identification code for telephone cable consists of the following:

The pairing of conductors for forming pairs is as follows:

No. 1 paired with nos. 2 thru 12 for first 11 pairs.
No. 2 paired with nos. 3 thru 12 for next 10 pairs.
No. 3 paired with nos. 4 thru 12 for next 9 pairs.
No. 4 paired with nos. 5 thru 12 for next 8 pairs.
No. 5 paired with nos. 6 thru 12 for next 7 pairs.
No. 6 paired with nos. 7 thru 12 for next 6 pairs.
No. 7 paired with nos. 8 thru 12 for next 5 pairs.
No. 8 paired with nos. 9 thru 12 for next 4 pairs.
No. 9 paired with nos. 10 thru 12 for next 3 pairs.
No. 10 paired with nos. 11 thru 12 for next 2 pairs.
No. 11 paired with No. 12.

Twisted Pair Identification Code – This code consists of the numbers in sequence running from 1 through the number corresponding to the total number of twisted pairs in the cable. Both conductors in each pair are numbered the same, with the sequence number of the pair. Distinction between the conductors is provided by different colored insulation, with one conductor being colored white, and the other one black. Conductors of a cable with a single pair are not numbered.

Twisted Triad Identification Code – This code consists of the numbers in sequence running from 1 through the number corresponding to the total quantity of twisted triads in the cable. Three conductors are numbered the same, denoting the sequence number of the triad. Distinction between the conductors is provided by different colored insulation, with one conductor being colored white, one black, and the other one red. Conductors of a cable with a single triad are not numbered.