SWA
Cable
Steel Wired Armoured cable is the accepted standard for underground installations.
This enables you to run cables underground or through water
filled ducts with confidence. The table below show the most commonly
used sizes but if you
cannot find the cable for your application do not hesitate to contact
our sales department.
SWA
Armoured Cables
- Insulation: PVC or XLPE (Cross Linked Polyethylene)
- Bedding: Extruded PVC
- Armour: Galvanised Steel Wire Armour, Sheath: PVC Black.
- Conductor: Stranded or Solid Plain Annealed Copper.
- Application: Designed for use in mains supply
electricity. These cables are provided with mechanical
protection are therefore suitable for external use and direct
burial.
- Technical Data: Voltage:
600/1000V,
Temperature range: 0oC to +90oC
- Relevant Standards: Conductor:
To BS6360, Armour: To BS442
Sheath:
To BS6746 Type G.
- Core Identification: 2 Cores: Blue,
Brown
3 Cores: Brown, Black, Grey
4 Cores: Blue, Brown, Black, Grey
5 Cores (6mm and below) : White Insulation With Black Numbers
5 Cores (10mm and above) : Brown, Blue, Black, Grey and G/Y
XLPE / PVC / AWA / PVC (Copper) BS5467
Single Core Plain annealed copper conductor, XLPE insulated / PVC
extruded bedded / Aluminium wire armoured / PVC sheathed. 600 /
1000 volts grade to BS5467.
| Size SQ. MM |
Maximum Diameter over
Conductor MM |
RT Of Insulation MM |
Diameter over Core MM |
RT of Bedding MM |
Diameter over Bedding MM |
Diameter of Armour Wire
MM |
Diameter over Armour MM |
Approx Overall Diameter
MM |
Weight KG / KM |
| 50 |
8.90 |
1.0 |
10.9 |
0.8 |
12.6 |
0.9 |
14.5 |
17.5 |
708 |
| 70 |
10.70 |
1.0 |
12.9 |
0.8 |
14.6 |
1.25 |
17.1 |
20.2 |
970 |
| 95 |
12.60 |
1.1 |
14.8 |
0.8 |
16.4 |
1.25 |
19.0 |
22.3 |
1240 |
| 120 |
14.21 |
1.2 |
16.7 |
0.8 |
18.4 |
1.25 |
21.0 |
24.2 |
1510 |
| 150 |
15.75 |
1.4 |
18.6 |
1.0 |
20.7 |
1.6 |
24.0 |
27.4 |
1930 |
| 185 |
17.64 |
1.6 |
20.9 |
1.0 |
23.0 |
1.6 |
26.3 |
30.0 |
2330 |
| 240 |
20.25 |
1.7 |
23.8 |
1.0 |
25.9 |
1.6 |
29.2 |
32.8 |
2900 |
| 300 |
22.68 |
1.8 |
26.4 |
1.0 |
28.5 |
1.6 |
31.8 |
35.6 |
3530 |
| 400 |
25.65 |
2.0 |
29.8 |
1.2 |
32.3 |
2.0 |
36.4 |
40.4 |
4690 |
| 500 |
28.80 |
2.2 |
33.3 |
1.2 |
35.8 |
2.0 |
39.9 |
44.2 |
5740 |
| 630 |
32.76 |
2.4 |
37.7 |
1.2 |
40.2 |
2.0 |
44.3 |
48.8 |
7150 |
| 800 |
37.05 |
2.6 |
42.4 |
1.4 |
45.3 |
2.5 |
50.4 |
55.4 |
9070 |
| 1000 |
41.60 |
2.8 |
47.3 |
1.4 |
50.2 |
2.5 |
55.3 |
60.6 |
11120 |
MultiCore Armoured (Copper)
XLPE / PVC / SWA / PVC (copper) BS5467
Plain annealed copper conductor, XLPE insulated / PVC extruded bedded
/ Steel Wire armoured / PVC sheathed. 600 / 1000 volts grade to
BS5467.
Two Core : 6942X
| Size SQ. MM |
Class of Conductor |
Max. Diameter over
Conductor MM |
RT Of Insulation MM |
Diameter over Core MM |
RT of Bedding MM |
Diameter over Bedding MM |
Diameter of Armour Wire
MM |
Diameter over Armour MM |
Approx Overall Diameter
MM |
Weight KG / KM |
| 1.5 |
2 |
1.59 |
0.6 |
3.0 |
0.8 |
7.7 |
0.9 |
9.6 |
12.3 |
300 |
| 2.5 |
2 |
2.01 |
0.7 |
3.4 |
0.8 |
8.5 |
0.9 |
10.4 |
13.6 |
360 |
| 4 |
2 |
2.55 |
0.7 |
4.0 |
0.8 |
9.7 |
0.9 |
11.6 |
14.7 |
420 |
| 6 |
2 |
3.12 |
0.7 |
4.5 |
0.8 |
10.7 |
0.9 |
12.6 |
15.9 |
500 |
| 10 |
2 |
4.05 |
0.7 |
5.5 |
0.8 |
12.7 |
0.9 |
14.6 |
18.0 |
650 |
| 16 |
2 |
5.10 |
0.7 |
6.5 |
0.8 |
14.5 |
1.25 |
17.0 |
20.0 |
910 |
| 25 |
2* |
- |
0.9 |
- |
0.8 |
18.4 |
1.25 |
20.9 |
24.1 |
1060 |
| 35 |
2* |
- |
0.9 |
- |
1.0 |
21.3 |
1.6 |
24.5 |
27.9 |
1480 |
| 50 |
2S |
- |
1.0 |
- |
1.0 |
19.0 |
1.6 |
22.2 |
25.8 |
1800 |
| 70 |
2S |
- |
1.1 |
- |
1.0 |
22.0 |
1.6 |
25.2 |
29.0 |
2300 |
| 95 |
2S |
- |
1.1 |
- |
1.2 |
25.1 |
2.0 |
29.1 |
33.1 |
3170 |
| 120 |
2S |
- |
1.2 |
- |
1.2 |
27.9 |
2.0 |
31.9 |
36.1 |
3800 |
| 150 |
2S |
- |
1.4 |
- |
1.2 |
30.9 |
2.0 |
34.9 |
39.3 |
4500 |
| 185 |
2S |
- |
1.6 |
- |
1.4 |
34.9 |
2.5 |
39.9 |
44.7 |
5800 |
| 240 |
2S |
- |
1.7 |
- |
1.4 |
39.0 |
2.5 |
44.0 |
49.0 |
7280 |
| 300 |
2S |
- |
1.8 |
- |
1.6 |
43.3 |
2.5 |
48.3 |
53.5 |
8750 |
| 400 |
2S |
- |
2.0 |
- |
1.6 |
48.4 |
2.5 |
53.4 |
59.0 |
10700 |
Three Core : 6943X
| Size SQ. MM |
Class of Conductor |
RT of Bedding MM |
Diameter over Bedding MM |
Diameter of Armour Wire
MM |
Diameter over Armour MM |
Approx Overall Diameter
MM |
Weight KG / KM |
| 1.5 |
2 |
0.8 |
8.2 |
0.9 |
10.1 |
12.8 |
341 |
| 2.5 |
2 |
0.8 |
9.1 |
0.9 |
11.0 |
14.1 |
405 |
| 4 |
2 |
0.8 |
10.4 |
0.9 |
12.3 |
15.3 |
495 |
| 6 |
2 |
0.8 |
11.5 |
0.9 |
13.4 |
16.6 |
600 |
| 10 |
2 |
0.8 |
13.7 |
1.25 |
16.4 |
19.5 |
900 |
| 16 |
2 |
0.8 |
15.5 |
1.25 |
18.0 |
21.2 |
1080 |
| 25 |
2* |
1.0 |
20.1 |
1.6 |
23.3 |
26.7 |
1750 |
| 35 |
2* |
1.0 |
22.8 |
1.6 |
26.0 |
29.6 |
2100 |
| 50 |
2S |
1.0 |
21.7 |
1.6 |
24.9 |
28.5 |
2350 |
| 70 |
2S |
1.0 |
25.2 |
1.6 |
28.4 |
32.2 |
3150 |
| 95 |
2S |
1.2 |
28.8 |
2.0 |
32.8 |
37.0 |
4300 |
| 120 |
2S |
1.2 |
32.0 |
2.0 |
36.0 |
40.4 |
5250 |
| 150 |
2S |
1.4 |
35.9 |
2.5 |
40.9 |
45.5 |
6720 |
| 185 |
2S |
1.4 |
40.0 |
2.5 |
45.0 |
49.8 |
8040 |
| 240 |
2S |
1.4 |
44.9 |
2.5 |
49.9 |
55.1 |
10150 |
| 300 |
2S |
1.6 |
49.8 |
2.5 |
54.8 |
60.2 |
12320 |
| 400 |
2S |
1.6 |
55.4 |
2.5 |
60.6 |
66.6 |
15090 |
Four Core : 6944X
| Size SQ. MM |
Class of Conductor |
RT of Bedding MM |
Diameter over Bedding MM |
Diameter of Armour Wire
MM |
Diameter over Armour MM |
Approx Overall Diameter
MM |
Weight KG / KM |
| 1.5 |
2 |
0.8 |
9.0 |
0.9 |
10.9 |
13.5 |
390 |
| 2.5 |
2 |
0.8 |
10.0 |
0.9 |
11.9 |
15.0 |
465 |
| 4 |
2 |
0.8 |
11.5 |
0.9 |
13.4 |
16.4 |
579 |
| 6 |
2 |
0.8 |
12.7 |
0.9 |
15.3 |
18.7 |
820 |
| 10 |
2 |
0.8 |
15.1 |
1.25 |
17.6 |
21.1 |
1090 |
| 16 |
2 |
0.8 |
17.2 |
1.25 |
19.7 |
22.9 |
1400 |
| 25 |
2* |
1.0 |
22.3 |
1.6 |
25.5 |
28.9 |
2100 |
| 35 |
2* |
1.0 |
25.3 |
1.6 |
28.5 |
32.1 |
2580 |
| 50 |
2S |
1.0 |
25.0 |
1.6 |
28.2 |
32.0 |
3000 |
| 70 |
2S |
1.2 |
29.5 |
2.0 |
33.5 |
37.7 |
4300 |
| 95 |
2S |
1.2 |
33.3 |
2.0 |
37.3 |
41.7 |
5510 |
| 120 |
2S |
1.4 |
37.5 |
2.5 |
42.5 |
47.1 |
7150 |
| 150 |
2S |
1.4 |
41.6 |
2.5 |
46.6 |
51.4 |
8500 |
| 185 |
2S |
1.4 |
46.4 |
2.5 |
51.4 |
56.6 |
10300 |
| 240 |
2S |
1.6 |
52.6 |
2.5 |
57.6 |
63.0 |
13000 |
| 300 |
2S |
1.6 |
58.0 |
2.5 |
63.0 |
68.8 |
15750 |
| 400 |
2S |
1.8 |
64.8 |
3.15 |
71.3 |
78.1 |
20450 |
Five Core : 6945X
| Size SQ. MM |
Class of Conductor |
RT of Bedding MM |
Diameter over Bedding MM |
Diameter of Armour Wire
MM |
Diameter over Armour MM |
Approx Overall Diameter
MM |
Weight KG / KM |
| 1.5 |
2 |
0.8 |
9.0 |
0.9 |
10.9 |
13.5 |
390 |
| 2.5 |
2 |
0.8 |
10.0 |
0.9 |
11.9 |
15.0 |
465 |
| 4 |
2 |
0.8 |
11.5 |
0.9 |
13.4 |
16.4 |
579 |
| 6 |
2 |
0.8 |
12.7 |
0.9 |
15.3 |
18.7 |
820 |
| 10 |
2 |
0.8 |
15.1 |
1.25 |
17.6 |
21.1 |
1090 |
| 16 |
2 |
0.8 |
17.2 |
1.25 |
19.7 |
22.9 |
1400 |
| 25 |
2* |
1.0 |
22.3 |
1.6 |
25.5 |
28.9 |
2100 |
| 35 |
2* |
1.0 |
25.3 |
1.6 |
28.5 |
32.1 |
2580 |
Six Core : 6946X
| Size SQ. MM |
Class of Conductor |
RT of Bedding MM |
Diameter over Bedding MM |
Diameter of Armour Wire
MM |
Diameter over Armour MM |
Approx Overall Diameter
MM |
Weight KG / KM |
| 1.5 |
2 |
0.8 |
10.9 |
0.9 |
12.8 |
15.2 |
497 |
| 2.5 |
2 |
0.8 |
12.1 |
0.9 |
14.0 |
17.1 |
609 |
| 4 |
2 |
0.8 |
13.9 |
0.9 |
16.5 |
19.7 |
886 |
| 6 |
2 |
0.8 |
15.4 |
1.25 |
18.0 |
21.3 |
1070 |
| 10 |
2 |
1.0 |
18.8 |
1.6 |
22.1 |
25.6 |
1650 |
| 16 |
2 |
1.0 |
21.8 |
1.6 |
25.1 |
28.8 |
2190 |
| 25 |
2 |
1.0 |
26.9 |
1.6 |
30.2 |
34.1 |
3090 |
Seven Core : 6947X
| Size SQ. MM |
Class of Conductor |
RT of Bedding MM |
Diameter over Bedding MM |
Diameter of Armour Wire
MM |
Diameter over Armour MM |
Approx Overall Diameter
MM |
Weight KG / KM |
| 1.5 |
2 |
0.8 |
10.9 |
0.9 |
12.8 |
15.2 |
506 |
| 2.5 |
2 |
0.8 |
12.1 |
0.9 |
14.0 |
17.1 |
618 |
| 4 |
2 |
0.8 |
13.9 |
1.25 |
16.5 |
19.7 |
907 |
| 6 |
2 |
0.8 |
15.4 |
1.25 |
18.0 |
21.3 |
1110 |
| 10 |
2 |
1.0 |
18.8 |
1.25 |
22.1 |
25.6 |
1720 |
| 16 |
2 |
1.0 |
21.8 |
1.6 |
25.1 |
28.8 |
2300 |
| 25 |
2 |
1.0 |
30.2 |
1.6 |
34.3 |
38.6 |
3900 |
Eight Core : 6948X
| Size SQ. MM |
Class of Conductor |
RT of Bedding MM |
Diameter over Bedding MM |
Diameter of Armour Wire
MM |
Diameter over Armour MM |
Approx Overall Diameter
MM |
Weight KG / KM |
| 1.5 |
2 |
0.8 |
11.9 |
1.25 |
14.5 |
17.6 |
663 |
| 2.5 |
2 |
0.8 |
13.1 |
1.25 |
15.7 |
18.8 |
793 |
| 4 |
2 |
0.8 |
15.3 |
1.25 |
17.9 |
21.2 |
1030 |
| 6 |
2 |
1.0 |
17.3 |
1.6 |
20.6 |
24.1 |
1440 |
| 10 |
2 |
1.0 |
20.7 |
1.6 |
24.0 |
27.7 |
1960 |
Ten Core : 694/10X
| Size SQ. MM |
Class of Conductor |
RT of Bedding MM |
Diameter over Bedding MM |
Diameter of Armour Wire
MM |
Diameter over Armour MM |
Approx Overall Diameter
MM |
Weight KG / KM |
| 1.5 |
2 |
0.8 |
13.9 |
1.25 |
16.5 |
19.8 |
812 |
| 2.5 |
2 |
0.8 |
15.5 |
1.25 |
18.1 |
21.4 |
989 |
| 4 |
2 |
1.0 |
18.3 |
1.6 |
21.6 |
25.1 |
1410 |
| 6 |
2 |
1.0 |
20.3 |
1.6 |
23.6 |
27.3 |
1680 |
| 10 |
2 |
1.0 |
24.3 |
1.6 |
27.6 |
31.5 |
2320 |
Twelve Core : 694/12X
| Size SQ. MM |
Class of Conductor |
RT of Bedding MM |
Diameter over Bedding MM |
Diameter of Armour Wire
MM |
Diameter over Armour MM |
Approx Overall Diameter
MM |
Weight KG / KM |
| 1.5 |
2 |
0.8 |
14.3 |
1.25 |
16.9 |
19.4 |
854 |
| 2.5 |
2 |
0.8 |
16.0 |
1.25 |
18.6 |
22.4 |
1080 |
| 4 |
2 |
1.0 |
18.9 |
1.6 |
22.2 |
27.7 |
1550 |
| 6 |
2 |
1.0 |
21.0 |
1.6 |
24.3 |
28.0 |
1920 |
| 10 |
2 |
1.0 |
25.1 |
1.6 |
28.4 |
32.3 |
2660 |
Sixteen Core : 694 / 16X
| Size SQ. MM |
Class of Conductor |
RT of Bedding MM |
Diameter over Bedding MM |
Diameter of Armour Wire
MM |
Diameter over Armour MM |
Approx Overall Diameter
MM |
Weight KG / KM |
| 1.5 |
2 |
0.8 |
16.0 |
1.25 |
18.6 |
21.9 |
1020 |
| 2.5 |
2 |
0.8 |
18.2 |
1.6 |
21.5 |
25.0 |
1430 |
| 4 |
2 |
1.0 |
22.1 |
1.6 |
25.4 |
29.1 |
1950 |
| 6 |
2 |
1.0 |
23.4 |
1.6 |
26.7 |
30.4 |
2300 |
Nineteen Core : 694 / 19X
| Size SQ. MM |
Class of Conductor |
RT of Bedding MM |
Diameter over Bedding MM |
Diameter of Armour Wire
MM |
Diameter over Armour MM |
Approx Overall Diameter
MM |
Weight KG / KM |
| 1.5 |
2 |
1.0 |
17.3 |
1.25 |
19.9 |
23.2 |
1120 |
| 2.5 |
2 |
1.0 |
19.3 |
1.6 |
22.6 |
26.1 |
1570 |
| 4 |
2 |
1.0 |
22.3 |
1.6 |
25.6 |
29.3 |
2050 |
Twenty Two Core : 694 / 22X
| Size SQ. MM |
Class of Conductor |
RT of Bedding MM |
Diameter over Bedding MM |
Diameter of Armour Wire
MM |
Diameter over Armour MM |
Approx Overall Diameter
MM |
Weight KG / KM |
| 1.5 |
2 |
1.0 |
20.3 |
1.6 |
23.6 |
27.3 |
1560 |
| 2.5 |
2 |
1.0 |
22.7 |
1.6 |
26.0 |
29.7 |
1930 |
| 4 |
2 |
1.0 |
26.3 |
1.6 |
29.6 |
33.5 |
2530 |
Twenty Seven Core : 694 / 27X
| Size SQ. MM |
Class of Conductor |
RT of Bedding MM |
Diameter over Bedding MM |
Diameter of Armour Wire
MM |
Diameter over Armour MM |
Approx Overall Diameter
MM |
Weight KG / KM |
| 1.5 |
2 |
1.0 |
20.7 |
1.6 |
24.0 |
27.9 |
1630 |
| 2.5 |
2 |
1.0 |
23.2 |
1.6 |
26.5 |
30.2 |
2050 |
| 4 |
2 |
1.0 |
26.9 |
1.6 |
30.2 |
34.4 |
2740 |
Thirty Core : 694 / 30X
| Size SQ. MM |
Class of Conductor |
RT of Bedding MM |
Diameter over Bedding MM |
Diameter of Armour Wire
MM |
Diameter over Armour MM |
Approx Overall Diameter
MM |
Weight KG / KM |
| 1.5 |
2 |
1.0 |
21.5 |
1.6 |
24.8 |
28.5 |
1730 |
| 2.5 |
2 |
1.0 |
24.1 |
1.6 |
27.4 |
31.3 |
2200 |
Thirty Seven Core : 694 / 30X
| Size SQ. MM |
Class of Conductor |
RT of Bedding MM |
Diameter over Bedding MM |
Diameter of Armour Wire
MM |
Diameter over Armour MM |
Approx Overall Diameter
MM |
Weight KG / KM |
| 1.5 |
2 |
1.0 |
23.3 |
1.6 |
26.6 |
30.6 |
1970 |
| 2.5 |
2 |
1.0 |
26.1 |
1.6 |
29.4 |
33.8 |
2540 |
| 4 |
2 |
1.2 |
31.0 |
2.0 |
35.4 |
39.6 |
- |
Forty Core : 694 / 40X
| Size SQ. MM |
Class of Conductor |
RT of Bedding MM |
Diameter over Bedding MM |
Diameter of Armour Wire
MM |
Diameter over Armour MM |
Approx Overall Diameter
MM |
Weight KG / KM |
| 1.5 |
2 |
1.0 |
24.3 |
1.6 |
27.6 |
31.5 |
2080 |
| 2.5 |
2 |
1.0 |
27.7 |
1.6 |
31.8 |
35.9 |
2970 |
Forty Eight : 694 / 48X
| Size SQ. MM |
Class of Conductor |
RT of Bedding MM |
Diameter over Bedding MM |
Diameter of Armour Wire
MM |
Diameter over Armour MM |
Approx Overall Diameter
MM |
Weight KG / KM |
| 1.5 |
2 |
1.0 |
26.7 |
1.6 |
30.0 |
33.9 |
2390 |
| 2.5 |
2 |
1.0 |
30.4 |
2.0 |
34.5 |
38.8 |
3430 |
| 4 |
2 |
1.2 |
36.0 |
2.0 |
39.6 |
44.6 |
- |
Cable Glands:
| 6942X
Two Core
Colour Code - Brown, Blue |
| Part no: |
(outdoor) CW
Gland |
(indoor) BW
Gland |
Conductor
Size: |
| SWA/2C/1.5 |
CW20S |
BW20S |
1.5mm |
| SWA/2C/2.5 |
CW20S |
BW20S |
2.5mm |
| SWA/2C/4.0 |
CW20S |
BW20S |
4.0mm |
| SWA/2C/6.0 |
CW20 |
BW20 |
6.0mm |
| SWA/2C/10.0 |
CW25 |
BW25 |
10.0mm |
| SWA/2C/16.0 |
CW25 |
BW25 |
16.0mm |
| |
| 6943X
Three
Core
Colour Code - Brown, Black, Grey |
| Part no: |
(outdoor) CW
Gland |
(indoor) BW
Gland |
Conductor
Size: |
| SWA/3C/1.5 |
CW20S |
BW20S |
1.5mm |
| SWA/3C/2.5 |
CW20S |
BW20S |
2.5mm |
| SWA/3C/4.0 |
CW20 |
BW20 |
4.0mm |
| SWA/3C/6.0 |
CW20 |
BW20 |
6.0mm |
| SWA/3C/10.0 |
CW25 |
BW25 |
10.0mm |
| SWA/3C/16.0 |
CW25 |
BW25 |
16.0mm |
| |
| 6944X
Four
Core
Colour Code - Brown, Black, Grey Blue |
| Part no: |
(outdoor) CW
Gland |
(indoor) BW
Gland |
Conductor
Size: |
| SWA/4C/1.5 |
CW20S |
BW20S |
1.5mm |
| SWA/4C/2.5 |
CW20S |
BW20S |
2.5mm |
| SWA/4C/4.0 |
CW20 |
BW20 |
4.0mm |
| SWA/4C/6.0 |
CW20 |
BW20 |
6.0mm |
| SWA/4C/10.0 |
CW25 |
BW25 |
10.0mm |
| SWA/4C/16.0 |
CW25 |
BW25 |
16.0mm |
Current Ratings
Multicore armoured cables having thermosetting insulation (copper
conductors). BS5467, BS6724. Ambient temperature : 30oC
Conductor Operating temperature : 90oC
| Conductor
Cross-Sectional Area |
Reference
Method 1
Clipped Direct |
Reference
Method 11 (on a perforated horizontal or vertical cable tray) or
Reference Method 13 (free air) |
| mm2 |
1 two core cable, single
phase a.c. or d.c. (A) |
1 three or four core
cable, three phase a.c. (A) |
1 two core cable, single
phase a.c. or d.c. (A) |
1 three or four core
cable, three phase a.c. (A) |
| 1 |
2 |
3 |
4 |
5 |
| 1.5 |
27 |
23 |
29 |
25 |
| 2.5 |
36 |
31 |
39 |
33 |
| 4 |
49 |
42 |
52 |
44 |
| 6 |
62 |
53 |
66 |
56 |
| 10 |
85 |
73 |
90 |
78 |
| 16 |
110 |
94 |
115 |
99 |
| 25 |
146 |
124 |
152 |
131 |
| 35 |
180 |
154 |
188 |
162 |
| 50 |
219 |
187 |
228 |
197 |
| 70 |
279 |
238 |
291 |
251 |
| 95 |
338 |
389 |
354 |
304 |
| 120 |
392 |
335 |
410 |
353 |
| 150 |
451 |
386 |
472 |
406 |
| 240 |
607 |
520 |
636 |
546 |
| 300 |
698 |
599 |
732 |
628 |
| 400 |
787 |
673 |
847 |
728 |
Where a conductor operates at a temperature exceeding 70oC
it shall be ascertained that the equipment connected to the conductor is
suitable for the conductor operating temperature.
Where cables are connected to equipment or accessories designed to
operate at a temperature not exceeding 70oC,
the current ratings given in the equivalent table for 70oC
pvc insulated cables (BS6004, BS6346) shall be used.
Voltage drop (Per ampere metre), Conductor operating temperature : 90oC
|
Conductor cross sectional area (mm2) |
Two Core cable d.c. (mV/A/m) |
Two core cable, single phase a.c. (mV/A/m)
|
Three or four core cable three phase a.c.
(mV/A/m) |
| 1 |
2 |
3 |
4 |
| 1.5 |
31 |
31 |
27 |
| 2.5 |
19 |
19 |
16 |
| 4 |
12 |
12 |
10 |
| 6 |
7.9 |
7.9 |
6.8 |
| 10 |
4.7 |
4.7 |
4.0 |
| 16 |
2.9 |
2.9 |
2.5 |
| |
|
r |
x |
z |
r |
x |
z |
| 25 |
1.85 |
1.85 |
0.160 |
1.90 |
1.60 |
0.140 |
1.65 |
| 35 |
1.35 |
1.35 |
0.155 |
1.35 |
1.15 |
0.135 |
1.15 |
| 50 |
0.98 |
0.99 |
0.155 |
1.00 |
0.86 |
0.135 |
0.87 |
| 70 |
0.67 |
0.67 |
0.150 |
0.69 |
0.59 |
0.130 |
0.60 |
| 95 |
0.49 |
0.50 |
0.150 |
0.52 |
0.43 |
0.130 |
0.45 |
| 120 |
0.39 |
0.40 |
0.145 |
0.42 |
0.34 |
0.130 |
0.37 |
| 150 |
0.31 |
0.32 |
0.145 |
0.35 |
0.28 |
0.125 |
0.30 |
| 240 |
0.195 |
0.20 |
0.140 |
0.24 |
0.175 |
0.125 |
0.21 |
| 300 |
0.155 |
0.16 |
0.140 |
0.21 |
0.140 |
0.120 |
0.185 |
| 400 |
0.120 |
0.13 |
0.140 |
0.190 |
0.115 |
0.120 |
0.165 |
|
