Phone Wiring Color Code Book
In other jurisdictions only a few conductor colors are so codified.
Phone wiring color code book. Phase 3 phase 3 wiring should be blue. In the old iec color code all the lines in three phase supply are either brown or black. The wire pair colors are blue orange green and brown. During the second half of the 20th century is of the following kind.
White red white black white yellow white violet red black red yellow red violet black yellow black violet yellow violet blue orange blue green blue brown blue slate orange green super unit binder colors for full color code s u. For all new telephone wiring projects you should use cat 5 cable. This created a lot of problem. Ground ground wiring can be green or green with a yellow stripe.
Tip ring green. Most phone wire installed in the u s. Wiring for ac and dc power distribution branch circuits are color coded for identification of individual wires. Not used in new installations anymore pair one green and red used for phone line 1 pair two yellow and black used for phone line 2 pair three white and blue used for phone line 3 pair four brown and orange used for phone line 4 color code two is the new industry standard used today.
Uk started using the iec code from march 2014. Neutral neutral wiring should be white. Also buy wiring materials and tools here. Before that it had its own code for electrical wiring.
Older telephone wiring was a basic cat 3 4 conductor or 2 pairs with red green black yellow. Cec color code for canada. Binder color pair range white1 600 red601 1200. In some jurisdictions all wire colors are specified in legal documents.
Newer homes can have anything from cat 3 3 pair on up to cat 5e with 4 pairs with the insulation colors being a combination of solid and solid with white for each wiring pair. The old color code in uk until 2004 is shown below. The kind of wire shown above has recently become obsolete. Color code one is the old solid color code.
All of the cat 5 wire i ve seen uses the following color coding. In some uncommon situations one phase will have a higher voltage than the others. Advice for home phone wiring and jacks with information about adding second or third line dsl and reference for wire color codes.