wiring for BT extension lead help

strawberryberry

When redecorating the wires to the extension lead box have been cut.:mad:
I need to put these colours into the correct terminals.

Red
Yellow
Green
Black

The terminals are screw down ones numbered like this

1 6
2 5
3 4

Ive tried lots of combinations but no luck and spent hours on the floor trying to put them in as there is no spare wire to play with but cant get a signal. Cant just buy another extension lead as the holes have been drilled in the wall and the wires pushed through and decorated over.
Please can any one help :beer:

david29dpo

Unscrew the front of the master socket to see which colours go where and just do the same at the extension.

Heinz

The colours of the wires can vary but the terminal numbers to use never do.

You need to connect JUST TWO of the wires - one each to terminals 2 & 5.

That'll reduce the number of possible combinations for you to try.

strawberryberry

thanks for the tips i will try the 2 and 5 first - the master socket is under the bed and wading through the stuff to get to it:eek: never has such a small place held so much cr*p

cheekyweegit

Hiya,

Thought this might help:-

In each socket the wiring HAS to be connected as follows:-

1 Green/White
2 Blue/White
3 Orange/White
4 White/Orange
5 White/Blue
6 White/Green



PS You can buy a little took for sticking the wires in for around £1 from B&Q which I did but if you have a small electrical screw driver it works just as well just be careful though.

cajef

cheekyweegit wrote: »

Hiya,

Thought this might help:-

In each socket the wiring HAS to be connected as follows:-


if you have a small electrical screw driver it works just as well just be careful though.

Rubbish a lot of phone cable is only four core anyway, and as Heinz has already stated the only wires that need to be connected are terminals 2 & 5.

DO NOT use a small electrical screwdriver to push cables into an IDC terminal it will splay the connector apart and cause bad connection which can and does cause future problems.

Lplates

Strawberryberry, I hope that this will get you sorted:


1) The cable colour coding you have mentioned (red yellow green black) is commonly used in USA for wiring to phone extensions. In the UK, BT would use a 4-core cable with cores coloured blue/white, orange/white, white/orange and white/blue.

2) Often, only two conductors would be needed to an extension (to terminals 2 and 5). However, with certain phones the extension would not ring, although it would work otherwise. To ensure full functionality with any phone, three conductors are required (to terminals 2, 3 and 5).

3) If BT wire an extension they connect it with 4-core cable, to terminals 2, 3, 4 and 5.


As you have 4-core cable already installed over the run required, you just have to ensure that you know which core colour corresponds to which terminal. As you are using a non-standard cable, there is no wiring standard for you to follow. I suggest you proceed as follows:

Remove the master socket from its box.
Examine the wiring, and confirm that the four cores of the extension wiring are connected to terminals 2, 3, 4 and 5. If they are not, correct this.
Note which colour corresponds to which terminal.

Now go to the extension socket, and connect the four cores in the extension wiring to terminals 2, 3, 4 and 5 following the same format as in the master socket.

Now you will know the core colours for the active terminals and you can check (and if necessary correct) the wiring in any other extension socket.


As shown in the diagram in cheekyweegit’s post, it is good practice to use a small cable tie in each socket to relieve strain on the terminations.

You have said that the extension socket uses screw-down terminals. This being so, you might not need to make any new connections to insulation-piercing terminals. However, if you do, don’t mess about using screwdrivers or other unsuitable tools to insert wires into the terminations. Buy the proper Krone tool. They are a joy to use, and they ensure a job quickly and properly done. When you have finished wiring your phone extensions, if you regret the expenditure on the tool it can easily be sold on eBay.

billsavings

Useful Source: http://www.telephonesuk.co.uk/wiring_info.htm

sicker

If you don't have the proper tool a thin PLASTIC knive can be carefully used to press the unbared wires into position 2 and 5. The serated edges of the jack makes the contact through the plastic covering.