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Steel Wired Armoured - SWA cable is designed for use in outdoors situationsSWA 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.

 CSE holds stock of a wide range of cables - Contact Corrina, our cable expert at

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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

   
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