Power Cables
PVC Insulated & Sheathed Unarmoured XLPE Insulated PVC/LSOH Sheathed LSOH Insulated Conduit Wires Fire Resistant Medium Voltage
Power Cables

BS 6622 Three Core Armoured 15KV XLPE Stranded Copper Conductors

Construction

cross-sectional area mm2 Minimum average thickness of insulation mm Nominal diameter over insulation
mm
Nominal thickness of PVC bedding
mm
Nominal number and diameter of armoured wires no./mm Nominal thickness of PVC oversheath
mm
Nominal overall diameter of cable mm
50 4.5 19.4 1.5 56/2.5 2.8 58.8
70 4.5 21.2 1.5 60/2.5 2.9 62.9
95 4.5 22.9 1.6 65/2.5 3.0 67.0
120 4.5 24.4 1.7 68/2.5 3.1 70.6
150 4.5 25.7 1.7 71/2.5 3.2 73.6
185 4.5 27.5 1.8 61/3.15 3.4 79.4
240 4.5 29.7 1.9 65/3.15 3.6 84.7
300 4.5 32.0 2.0 70/3.15 3.7 90.1
400 4.5 34.7 2.1 75/3.15 4.0 96.7

Installation

cross-sectional area mm2 Approximate cable weight kg/m Nominal drum length
m
Minimum bending radius mm Nominal internal diameter of ducts mm
50 6.1 500 900 100
70 7.1 500 950 100
95 8.3 500 1050 125
120 9.4 500 1100 125
150 10.5 450 1150 125
185 12.9 400 1200 125
240 15.2 350 1300 125
300 17.6 300 1400 125
400 20.8 250 1500 125

Electrical Performance

cross-sectional area mm2 Maximum DC resistance of conductor at 20 ℃ uohms/m Maximum AC resistance of conductor at 90 ℃ uohms/m Reactance at 50Hz
uohms/m
Impedance at 50Hz uohms/m Maximum Capacitace PF/m Maximum charging current at normal voltage and frequency mA/m
50 387 494 123 508 211 0.58
70 268 343 115 361 240 0.65
95 193 248 109 270 267 0.73
120 153 196 105 223 291 0.79
150 124 159 102 189 312 0.85
185 99.1 128 98.6 162 340 0.93
240 75.4 98 95.2 137 375 1.02
300 60.1 80 92.2 123 411 1.12
400 47 64 89.3 110 454 1.24

Ratings

Cross-sectional area
mm2

Current Ratings

Short circuit ratings

Laid direct in ground
Amps

Drawn into ducts
Amps

Laid in air
Amps

One second short circuit rating of conductor
KA

One second short circuit rating of copper per core
KA

50

210

180

220

6.8

Typically

less

then

1kA

70

255

215

270

9.8

95

300

255

330

13.3

120

340

290

375

17.2

150

380

330

430

21.2

185

430

370

490

26.6

240

490

425

570

34.9

300

540

470

650

43.8

400

590

520

700

57.3