Cat 3 Cable Color Code

A common application of the 25 pair color code is the cabling for the registered jack interface rj21 which uses a female 50 pin miniature ribbon connector as shown in the following table the geometry of the pins of the receptacle right hand image corresponds to the pin numbers of the table.

Cat 3 cable color code.

Every pair is identified by a combination of 5 tip and 5 ring colors. Category 3 cable commonly known as cat 3 or station wire and less commonly known as vg or voice grade as for example in 100basevg is an unshielded twisted pair utp cable used in telephone wiring. You will see the same color code in a lesser grade cable cat3 voice grade but the conductors of the pair will not be as close together and so. The colors in cat 3 wiring are green red black and yellow.

The cat 3 cable can also be used for the rj 14 pinout with the same color code as the cat5 and cat6. 25 pair telco cable pinout. Almost all phone jacks are color coded either with colored wires or colors next to the wire connections. Another way of remembering the color coding is to simply switch the green set of wires in place with the orange set of wires.

If you are using utp cat 5 cable than you have to follow cat5 color code in order to make a working cable. There are two color code standards tia eia 568a 568b for making a working network cable. Our extensive inventory of electronic and electrical wire and cable is maintained to enable our products to be respooled cut and stripped dyed printed and packaged to. The color codes above are the standard and defined within wiring guides.

The internal pairs to the pinout are trasmit and recieve 1 and 1 while the 2 side pairs 2 and 2 are your power. These cables are used to connect different devices over a network for instance you have to use straight cable if you are connecting. A good way of remembering how to wire a crossover ethernet cable is to wire one end using the t 568a standard and the other end using the t 568b standard. As there are 8 wires in every utp cables you have to follow color coding standard on where to place each wires at rj 45 connector.

Allied wire and cable is a distributor and manufacturer of data communication cable and computer cable including cat 5 cabling fiber optic cabling coaxial cable and a complete line of cat 6 cables and communications wire. Identify the color codes in the phone jack. It is part of a family of standards defined jointly by the electronic industries alliance eia and the telecommunications industry association tia and published in tia eia 568 b. 25 pair cable s color code table.

Plastic insulated communication cables 25 pair unit colors pair number ring color tip color pair number ring color tip color 1 blue white 13 green black 2 orange white 14 brown black.