Blue And White Phone Wires

Red green black and yellow.

Blue and white phone wires.

Now that you have your phone jack wiring complete you must now hook the telephone wire up to the connecting block. The national electrical code nec says that white or gray must be used for neutral conductors and that bare copper or green wires must be used as ground wires. The ring wire is mostly the primary color with marks of the secondary color i e blue with white marks. White and gray electrical wires.

A red and a green. Fyi if purchase multiwire cable with 4 pair 8 colored wires for four lines the wiring convention is the same as above with line 3 using blue white and line 4 using orange brown. The primary colors are blue orange green brown and slate or gray if you re not a phone tech. The tip wire is mostly the secondary color with marks of the primary color i e white with blue marks.

The single line set will use the following pairs depending on your cable. If you find wires in either of these colors you ve located the neutral wires. One pair of wires is used for one telephone line. The solid blue wire is the ring and gets connected to the red jack terminal.

If you re extending a line to a room or other part of the house you can use this type of cable or you can use newer category 3 or 5 cat 3 or cat 5 data cable which also has multiple wires but with a different color scheme. Beyond that are general industry accepted rules about wire color that indicate their purpose. Rear of phone jack with blue pair attached. Again depending on the age of you home the conecting block could be as simple as two screws.

Red wire green wire white blue wire blue white wire quick fix tip. In older telephone installations the phone cable typically has four wires inside. White is most. All telephones residential telephone jacks connectors etc that you can buy today follow this wiring convention.

This is a gray or tan box that measures roughly 8 inches by 12 inches. The white wire with a blue stripe is terminated on the green tip screw. After you connect the wire pair to the jack and you get a dial tone but you do not hear tones. The network interface device box is where the telephone wire from the phone company terminates and also where the phone wiring going into the house will connect to your landline phone.

But looking deeper the color of the wires inside of the sheathing reveals that different colored wires serve different purposes. The blue pair is connected as the primary telephone line. Then blue wires are most often used as travelers for three or four way switches for instance if you have switches at the top and bottom of a staircase that control the same light that s a three way switch.