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Cable Construction
Conductor1mm² to 1.5mm²: Class 5 tinned copper conductor according to BS EN 60228 (previously 6360)
2.5mm² and above: Class 2 tinned copper conductor according to BS EN 60228 (previously 6360)
InsulationHalogen free elastomer compound EPR Type GP4 according to BS 7655
SheathHOFR (Heat and Oil Resistant and Flame Retardant), halogen free elastomer compound Type SW4 according to BS 7655

Dimensions

No. of CoresConductor ClassNominal Cross Sectional Area mm²Nominal Thickness of Insulation mmNominal Thickness of Outer Sheath mmNominal Overall Diameter mmNominal Weight kg/km
1510.814.834
151.50.815.140
122.50.815.654
124116.578
126117.1101
1210118.1144
121611.19.5216
12251.21.211.4328
12351.21.212.6429
12501.41.314.3551
12701.41.316753
12951.61.418.61049
121201.61.520.31274
121501.81.622.41568
1218521.724.91949
122402.21.8282530
123002.41.930.93134
124002.6235.34258
125002.82.239.35337
2510.818.186
251.50.81.18.5103
222.50.81.19.5140
22411.211.6210
22611.212.7270
221011.314.9391
221611.417.5574
22251.21.521.2864
22351.21.623.71129
22501.41.726.91452
22701.41.930.81991
22951.62.135.92766
221201.62.239.13338
221501.82.343.24097
3510.81.18.4100
351.50.81.19122
322.50.81.110.1169
32411.212.3257
32611.213.5335
321011.315.9490
321611.418.6732
32251.21.622.71121
32351.21.725.41474
32501.41.828.91893
32701.42332611
3295.62.238.53638
321201.62.341.94400
321501.82.546.55425
3218522.751.86754
322402.22.958.68770
4510.81.19.1122
451.50.81.19.8149
422.50.81.111210
42411.213.4321
42611.315428
421011.417.6627
421611.520.7940
42251.21.725.31442
42351.21.828.31899
42501.41.932.12439
42701.42.136.73370
42951.62.342.84700
421201.62.546.85710
421501.82.751.97035
551.50.81.110.7180
522.50.81.212.2260
52411.315.2394
52611.416.9463
521011.519.6685
751.50.81.212.8252
722.50.81.214.4359
1251.50.81.315.6370
1222.50.81.417.9543
1951.50.81.419.4570
1922.50.81.522.2842
2751.50.81.622.4766
3751.50.81.726.21037

Class 5 Flexible Copper Conductors
Nominal Cross Sectional Area mm²Maximum Diameter of Wires in Conductor mmMaximum Resistance of Conductor at 20°C
Plain Wires ohms/kmMetal-Coated Wires ohms/km
10.2119.520
1.50.2613.313.7

Class 2 Stranded Copper Conductors
Nominal Cross
Sectional Area mm²
Minimum No. Of Wires In ConductorMaximum Resistance
of Conductor At 20ºC
CircularCircular CompactedShapedAnnealed Copper Conductor
CuAlCuAlCuAlMetal-Coated Wires ohms/km
2.57- 6---7.56
47-6---4.7
67-6---3.11
107766--1.84
167766--1.16
257766660.734
357766660.529
50191966660.391
701919121212120.27
951919151515150.195
1203737181518150.154
1503737181518150.126
1853737303030300.1
2403737343034300.0762
3006161343034300.0607
4006161535353530.0475
5006161535353530.0369

Current Carrying Capacity
Nominal Cross
Sectional Area mm²
Single Core
Amps
2 Core
Amps
3 and 4 Core
Amps
5 Core
Amps
7 Core
Amps
12 Core
Amps
19 Core
Amps
27 Core
Amps
37 Core
Amps
118151310.5-----
1.52320161210976.56
2.53026211615121098
4403428------
6524436------
10726150------
16968267------
2512710889------
35157133110------
50196167137------
70242206169------
95293249205------
120339288237------
150389331272------
185444377311------
240522444365------
300601511421------
400719611503------
500827703579------
Ambient Air Temperature of 45°C

De-Rating Factors

Ambient Temperature °C
35404550556065707580
DE-RATING FACTOR1.11.0510.940.880.820.740.670.580.47

When more than six bunched cables on cable trays, in cable conduits, pipes or trunking are expected to operate  simultaneously full rated capacity, a correction factors of 0.85 should be applied.

 

 

 

 

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