Color code telephone wiring diagram uk. Bt solid colour telephone wiring colour code this socket is connected to the latest solid colour coded bt internal cable which oddly is the same colour code as very early bt cable. Never use stranded wire mains cable or bell wire. 3rd secondary socket etc. 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.
If you do not understand that diagram then you are breaking. In 2006 amendment 2 of 17 th edition bs7671 wiring regulations saw a change to harmonise the uk colours with the european cable colours for consistency and to avoid confusion. If the lead has a bt adapter at one end the colour swap is usually made there usr tended to swap it in the rj11 plug others do their own thing. Wiring modern telephone sockets ljus fact file.
No need to terminate the brown wire. Bt telephone wiring colour codes common faults cable quality april 28th 2016 1154 am a a in this post we cover some common bt wiring faultsmistakes colour code schemes why cable quality with broadband is very important. Extension wiring was introduced in 1986. Its important that properties get their wiring checked to see if the wiring colours are out of date have deteriorated over time and to check if they comply with bs 7671 wiring regulations.
It is important that this size of wire is used or a good electrical connection cannot be guaranteed and there could be problems in the future with the system. All of this is of only. Wiring diagram for master extension telephone sockets. Older telephone wiring was a basic cat 3 4 conductor or 2 pairs with red green black yellow.
The diagram should be self explanatory as it shows what colours go where. House telephone wiring uses cable containing six 05mm diameter solid conductors. Normally the center two pins on the rj11 are connected to. Now since adsl filters only filter the main telephone pair they must re generate the ring signal themselves.
Technical information telecommunications color code chart 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 3 green white 15 slate black 4 brown white 16 blue yellow 5 slate white 17 orange yellow 6 blue red 18 green yellow 7 orange red 19 brown yellow 8 green. In the uk the british post office later bt used this color code for what is now known loosely as cw1308 specification cables referring to the post offices cable and wire specification no. And the extra ring signal connected on an orange wire terminal 3 though these colour codes are not always followed.