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Technical Specifications and Current Capacity – SWA Cable 2 Core

The Table below displays the Technical Specifications and Current Carrying Capacity of 2 Core Armoured Cable:-

How to size your 2 core SWA cable

Electrical engineers and electricians can use the below the formula to work the volt drop on armoured cable.

Voltage Drop = (mV/A/m) x Ib x L / 1000.

(mV/A/m): To find the value for (mV/A/m) use the above tables
Ib:  Design current in Amps which is watts divided by voltage
L:  length of the circuit in metres

Two Core Specifications

Nominal Cross Sectional Area (mm2)

1.5

2.5

4

6

10

16

25

35

50

70

95

120

150

185

240

300

400

Approx. Overall Diameter (mm)

10.8

12.3

13.4

14.5

16.7

19.5

20.8

23.4

25.5

29.0

31.9

34.4

37.9

42.4

46.4

50.3

54.7

Approx. Diameter Under Armour (mm)

6.9

8.2

9.3

10.4

12.4

14.5

15.6

17.4

19.7

22.7

25.1

27

30.2

33.5

37.2

40.9

45.1

Nominal Diameter of Armour Wires (mm)

0.9

0.9

0.9

0.9

0.9

1.25

1.25

1.6

1.6

1.6

2.0

2.0

2.0

2.5

2.5

2.5

2.5

Approx. Cable Weight (Kg, km)

250

320

380

460

570

840

1060

1410

1730

2260

3030

3610

4330

5600

6940

8100

9940

Maximum Conductor Resistance @ 20 Degrees C

12.1

7.41

4.61

3.08

1.83

1.15

0.727

0.524

0.387

0.268

0.193

0.153

0.124

0.0991

0.0754

0.0601

0.047

DC or Single Phase AC Clipped Direct

(Amps)

27

36

49

62

85

110

146

180

219

279

338

392

451

515

607

698

787

DC or Single Phase AC Free Air (Amps)

29

39

52

66

90

115

152

188

228

291

354

410

472

539

636

732

847

Volt Drop DC (mV/A/m)

31

19

12

7.9

4.7

2.9

1.85

1.35

0.98

0.67

0.49

0.39

0.31

0.25

0.195

0.155

0.12

Volt Drop Single Phase AC Touching (mV/A/m) 31 19 12 7.9 4.7 2.9 1.9 1.35 1.0 0.69 0.52 0.42 0.35 0.29 0.24 0.21 0.19

We have a full range of SWA Cable 2 Core available you can find more useful information on our product category pages.

If you cannot find the required  2 Core SWA cable, please feel free to call our Sales Team on 01244 288138 for further assistance and information.
Quickbit is located on Zone 1 of Deeside Industrial Estate near Chester, so if you’d prefer to pick up your SWA Cable 2 Core as opposed to having it delivered, please feel free to do so.
SWA Cable 2 Core for the best prices online with fast, free delivery on orders over £100.