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The 25-pair color code, originally known as even-count color code, [1] is a color code used to identify individual conductors in twisted-pair wiring for telecommunications .
File:25 pair color code chart.svg. Size of this PNG preview of this SVG file: 300 × 600 pixels. Other resolutions: 120 × 240 pixels | 240 × 480 pixels | 384 × 768 pixels | 512 × 1,024 pixels | 1,024 × 2,048 pixels | 375 × 750 pixels. This is a file from the Wikimedia Commons. Information from its description page there is shown below.
A mnemonic which includes color name (s) generally reduces the chances of confusing black and brown. Some mnemonics that are easy to remember: B eetle B ailey R uns O ver Y our G eneral B efore V ery G ood W itnesses. B each B ums R arely O ffer Y ou G atorade B ut V ery G ood W ater. B etter B e R ight O r Y our G reat B ig V acation G oes W ...
An electronic color code or electronic colour code (see spelling differences) is used to indicate the values or ratings of electronic components, usually for resistors, but also for capacitors, inductors, diodes and others. A separate code, the 25-pair color code, is used to identify wires in some telecommunications cables. Different codes are used for wire leads on devices such as ...
25-pair color code chart used in certain kinds of wiring. A color code is a system for encoding and representing non-color information with colors to facilitate communication. This information tends to be categorical (representing unordered/qualitative categories) though may also be sequential (representing an ordered/quantitative variable).
Unshielded twisted pair (UTP) cables are found in many Ethernet networks and telephone systems. For indoor telephone applications, UTP is often grouped into sets of 25 pairs according to a standard 25-pair color code originally developed by AT&T Corporation.
The tip conductor color scheme uses the same colors as the matching ring but switches the thickness of the primary and secondary colored stripes. Since the sets are ordered, an orange (color 2 in its set) with a yellow (color 4) is the color scheme for the 4·5 + 2 − 5 = 17th pair of wires.
A second pair is coded in black for tip and yellow for ring. A third pair consists of white tip coding and blue ring coding. For larger cable assemblies more complex schemes, such as the 25-pair color code, are used.
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