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CURRENT RATINGS - COPPER AERIAL

PVC Aerial cables

Nom. conductor areaNo. & nom. diameter of wires1 core insulated conductors1 core insulated conductors2 and 3 core(a) parallel webbed2 and 3 core(a) parallel webbed3 and 4 core(b) twisted3 and 4 core(b) twisted3 Phase voltage drop at 50Hz
mm2 no/mm still air 1.0m/s wind still air 1.0m/s wind still air 1.0m/s wind mV/A.m
6 7/1.04 35 70 30 50 26 48 6.71
10 7/1.35 48 96 40 68 36 65 4.02
16 7/1.70 65 125 52 90 47 85 2.56
25 19/1.35 88 165 63 115 1.67
35 19/1.53 105 205 1.26
50 19/1.78 130 240 0.988
70 19/2.14 165 305 0.767
95 37/1.78 200 360 0.639
120 37/2.03 235 425 0.574
150 37/2.25 265 475 0.530
185 37/2.52 310 540 0.494

Note: The current carrying capacities are based on an air ambient temperature of 40ºC, a maimum conductor temperature of 75ºC and exposure to direct sunlight having an intensity of 1000W/m². The values are based on the use of black PVC.

(a) Also for 2 conductor neutral screened aerial cable.

(b) Also for 3 and 4 conductor neutral screened aerial cable.

Under normal circumstances there will alwyas be some air movement and the rating for 1.0m/s wind is recommended.

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