Internal telephone Cable CW1308
Pair Colour of insulation (Wide band, base colour in capitals).
a - wire b - wire
1 WHITE - Blue BLUE - White
2 WHITE - Orange ORANGE - White
3 WHITE - Green GREEN - White
4 WHITE - Brown BROWN - White
5 WHITE - Grey GREY - White
6 RED - Blue BLUE - Red
7 RED - Orange ORANGE - Red
8 RED - Green GREEN - Red
9 RED - Brown BROWN - Red
10 RED - Grey GREY - Red
11 BLACK - Blue BLUE - Black
l2 BLACK - Orange ORANGE - Black
13 BLACK - Green GREEN - Black
l4 BLACK - Brown BROWN - Black
15 BLACK - Grey GREY - Black
16 YELLOW - Blue BLUE - Yellow
17 YELLOW - Orange ORANGE - Yellow
18 YELLOW - Green GREEN - Yellow
19 YELLOW - Brown BROWN - Yellow
20 YELLOW - Grey GREY - Yellow
21 VIOLET - Blue BLUE - Violet
22 VIOLET - Orange ORANGE - Violet
23 VIOLET - Green GREEN - Violet
24 VIOLET - Brown BROWN - Violet
25 VIOLET - Grey GREY - Violet
26 PINK - Blue BLUE - Pink
27 PINK - Orange ORANGE - Pink
28 PINK - Green GREEN - Pink
29 PINK - Brown BROWN - Pink
30 PINK - Grey GREY - Pink
In cables made up from 20-pair units, the first unit in each cable layer
is lapped with an ORANGE tape, the last unit is lapped with GREEN.
GPO standard table below for 100 pair - 80 triple and 60 Quad instrument
Cables over 30 wire (15 pair) often had a spare Red/White.
In later cables the triple became light blue or sort of turquoise colour, with the pair colours remaining as below.
|
|
Pairs |
|
Triples |
|
Quad Inst |
|
|
B leg |
A leg |
|
|
|
|
|
|
1 |
Blue |
White |
|
Red |
|
Black |
|
2 |
Orange |
White |
|
Red |
|
Black |
|
3 |
Green |
White |
|
Red |
|
Black |
|
4 |
Brown |
White |
|
Red |
|
Black |
|
5 |
Slate |
White |
|
Red |
|
Black |
|
6 |
Blue/white |
White |
|
Red |
|
Black |
|
7 |
Blue/org |
White |
|
Red |
|
Black |
|
8 |
Blue/green |
White |
|
Red |
|
Black |
|
9 |
Blue/brown |
White |
|
Red |
|
Black |
|
10 |
Blue/slate |
White |
|
Red |
|
Black |
|
11 |
Orange/white |
White |
|
Red |
|
Black |
|
12 |
Orange/green |
White |
|
Red |
|
Black |
|
13 |
Orange/brown |
White |
|
Red |
|
Black |
|
14 |
Orange/slate |
White |
|
Red |
|
Black |
|
15 |
Green/white |
White |
|
Red |
|
Black |
|
16 |
Green/Brown |
White |
|
Red |
|
Black |
|
17 |
Green/Slate |
White |
|
Red |
|
Black |
|
18 |
Brown/white |
White |
|
Red |
|
Black |
|
19 |
Brown/Slate |
White |
|
Red |
|
Black |
|
20 |
Slate/White |
White |
|
Red |
|
Black |
|
21 |
Blue |
Yellow |
|
Red |
|
Black |
|
22 |
Orange |
Yellow |
|
Red |
|
Black |
|
23 |
Green |
Yellow |
|
Red |
|
Black |
|
24 |
Brown |
Yellow |
|
Red |
|
Black |
|
25 |
Slate |
Yellow |
|
Red |
|
Black |
|
26 |
Blue/white |
Yellow |
|
Red |
|
Black |
|
27 |
Blue/org |
Yellow |
|
Red |
|
Black |
|
28 |
Blue/green |
Yellow |
|
Red |
|
Black |
|
29 |
Blue/brown |
Yellow |
|
Red |
|
Black |
|
30 |
Blue/slate |
Yellow |
|
Red |
|
Black |
|
31 |
Orange/white |
Yellow |
|
Red |
|
Black |
|
32 |
Orange/green |
Yellow |
|
Red |
|
Black |
|
33 |
Orange/brown |
Yellow |
|
Red |
|
Black |
|
34 |
Orange/slate |
Yellow |
|
Red |
|
Black |
|
35 |
Green/white |
Yellow |
|
Red |
|
Black |
|
36 |
Green/Brown |
Yellow |
|
Red |
|
Black |
|
37 |
Green/Slate |
Yellow |
|
Red |
|
Black |
|
38 |
Brown/white |
Yellow |
|
Red |
|
Black |
|
39 |
Brown/Slate |
Yellow |
|
Red |
|
Black |
|
40 |
Slate/White |
Yellow |
|
Red |
|
Black |
|
41 |
Blue |
Black |
|
Red |
|
|
|
42 |
Orange |
Black |
|
Red |
|
|
|
43 |
Green |
Black |
|
Red |
|
|
|
44 |
Brown |
Black |
|
Red |
|
|
|
45 |
Slate |
Black |
|
Red |
|
|
|
46 |
Blue/white |
Black |
|
Red |
|
|
|
47 |
Blue/org |
Black |
|
Red |
|
|
|
48 |
Blue/green |
Black |
|
Red |
|
|
|
49 |
Blue/brown |
Black |
|
Red |
|
|
|
50 |
Blue/slate |
Black |
|
Red |
|
|
|
51 |
Orange/white |
Black |
|
Red |
|
|
|
52 |
Orange/green |
Black |
|
Red |
|
|
|
53 |
Orange/brown |
Black |
|
Red |
|
|
|
54 |
Orange/slate |
Black |
|
Red |
|
|
|
55 |
Green/white |
Black |
|
Red |
|
|
|
56 |
Green/Brown |
Black |
|
Red |
|
|
|
57 |
Green/Slate |
Black |
|
Red |
|
|
|
58 |
Brown/white |
Black |
|
Red |
|
|
|
59 |
Brown/Slate |
Black |
|
Red |
|
|
|
60 |
Slate/White |
Black |
|
Red |
|
|
|
61 |
Blue |
Violet |
|
Red |
41 |
Black |
|
62 |
Orange |
Violet |
|
Red |
42 |
Black |
|
63 |
Green |
Violet |
|
Red |
43 |
Black |
|
64 |
Brown |
Violet |
|
Red |
44 |
Black |
|
65 |
Slate |
Violet |
|
Red |
45 |
Black |
|
66 |
Blue/white |
Violet |
|
Red |
46 |
Black |
|
67 |
Blue/org |
Violet |
|
Red |
47 |
Black |
|
68 |
Blue/green |
Violet |
|
Red |
48 |
Black |
|
69 |
Blue/brown |
Violet |
|
Red |
49 |
Black |
|
70 |
Blue/slate |
Violet |
|
Red |
50 |
Black |
|
71 |
Orange/white |
Violet |
|
Red |
51 |
Black |
|
72 |
Orange/green |
Violet |
|
Red |
52 |
Black |
|
73 |
Orange/brown |
Violet |
|
Red |
53 |
Black |
|
74 |
Orange/slate |
Violet |
|
Red |
54 |
Black |
|
75 |
Green/white |
Violet |
|
Red |
55 |
Black |
|
76 |
Green/Brown |
Violet |
|
Red |
56 |
Black |
|
77 |
Green/Slate |
Violet |
|
Red |
57 |
Black |
|
78 |
Brown/white |
Violet |
|
Red |
58 |
Black |
|
79 |
Brown/Slate |
Violet |
|
Red |
59 |
Black |
|
80 |
Slate/White |
Violet |
|
Red |
60 |
Black |
|
81 |
Blue |
Red |
|
|
|
|
|
82 |
Orange |
Red |
|
|
|
|
|
83 |
Green |
Red |
|
|
|
|
|
84 |
Brown |
Red |
|
|
|
|
|
85 |
Slate |
Red |
|
|
|
|
|
86 |
Blue/white |
Red |
|
|
|
|
|
87 |
Blue/org |
Red |
|
|
|
|
|
88 |
Blue/green |
Red |
|
|
|
|
|
89 |
Blue/brown |
Red |
|
|
|
|
|
90 |
Blue/slate |
Red |
|
|
|
|
|
91 |
Orange/white |
Red |
|
|
|
|
|
92 |
Orange/green |
Red |
|
|
|
|
|
93 |
Orange/brown |
Red |
|
|
|
|
|
94 |
Orange/slate |
Red |
|
|
|
|
|
95 |
Green/white |
Red |
|
|
|
|
|
96 |
Green/Brown |
Red |
|
|
|
|
|
97 |
Green/Slate |
Red |
|
|
|
|
|
98 |
Brown/white |
Red |
|
|
|
|
|
99 |
Brown/Slate |
Red |
|
|
|
|
|
100 |
Slate/White |
Red |
|
|
|
|
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