Color coding for more than 25-pair copper cables

Color codes
Back to the list of cabling color codes
More than 25 pairs? Now it's time for colored pair wrapping. Usually cabling vendors use two flat plastic strips, helically wrapped around each group of 25 pairs. Each strip is colored. First strip uses one of five tip colors. Second strip uses one of five ring colors. So wrap number equals to pair number with the same combination of tip and ring colored conductors. In general, the formula looks like pair number = 25*wrap # plus pair # in this particular bundle as per 25 pairs color coding table When the cable's pair count exceeds 600, bundles are grouped into super bundles. Every super bundle uses wrapping, colored with one of first three tip colors. It gives color codes for cables with up to 1800 pairs. For real big cables, having more than 1800 pairs, vendor-specific color coding is used.

Example: pair #45 - yellow/grey pair in the orange/white wrapped bundle.

45
(UL LISTED) CMR 24/050

Pairs numbered 1 to 125

navigate by pair number 1-125 | 126-250 | 251-375 | 376-500 | 501-600
pairs figure wrap #1 wrap #2
1
.
.
25



(UL LISTED) CMR 24/050
white blue
26
.
.
50



(UL LISTED) CMR 24/050
white orange
51
.
.
75



(UL LISTED) CMR 24/050
white green
76
.
.
100



(UL LISTED) CMR 24/050
white brown
101
.
.
125



(UL LISTED) CMR 24/050
white grey
pairs figure wrap #1 wrap #2
navigate by pair number 1-125 | 126-250 | 251-375 | 376-500 | 501-600
Residential Cabling Guide

Home Cabling Guide

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