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

Power Cables

BS 6622 Single Core Armoured 11kV 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
70 3.4 18.8 1.2 42/1.6 1.9 29.7
95 3.4 20.5 1.2 45/1.6 1.9 31.4
120 3.4 22.0 1.2 47/1.6 2.0 33.1
150 3.4 23.3 1.2 40/2.0 2.1 35.4
185 3.4 25.1 1.2 43/2.0 2.1 37.2
240 3.4 27.3 1.2 46/2.0 2.2 39.8
300 3.4 29.6 1.2 49/2.0 2.3 42.3
400 3.4 32.3 1.2 53/2.0 2.4 45.2
500 3.4 35.2 1.3 46/2.5 2.5 19.5
630 3.4 38.6 1.4 50/2.5 2.6 53.3

Installation

cross-sectional area mm2 Approximate cable weight kg/m Nominal drum length
m 		Minimum bending radius mm Nominal internal diameter of ducts mm
70 1.1 1000 450 100
95 1.3 1000 500 100
120 1.4 500 500 100
150 1.7 500 550 100
185 1.9 500 600 100
240 2.1 500 600 100
300 2.4 500 650 100
400 2.8 300 700 100
500 3.5 300 750 100
630 4.1 300 800 100

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
70 443 568 130 583 288 0.58
95 320 410 123 428 323 0.65
120 253 325 118 346 353 0.71
150 206 265 117 291 380 0.76
185 164 211 112 240 416 0.83
240 125 161 109 195 460 0.92
300 100 130 105 168 506 1.01
400 77.8 102 101 144 561 1.12
500 60.5 81 99.8 129 619 1.24
630 46.9 64 96.1 116 698 1.37

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
70 210 210 240 6.3 Typically less then 1kA
95 250 245 295 8.5
120 280 275 335 11.0
150 315 300 380 13.5
185 355 335 435 17.0
240 405 380 510 22.3
300 455 420 580 28.0
400 510 455 670 36.6
500 570 500 770 46.2
630 640 550 880 58.3