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CURRENT RATINGS - ALUMINIUM AERIAL

XLPE Aerial Cables

Nom. conductor areaNo. & nom. diameter of wires2 and 3 core(a) twisted2 and 3 core(a) twisted3 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 mV/A.m
16 7/1.70 49 78 44 70 4.15
25 19/1.35 64 105 59 97 2.64
35 19/1.52 78 125 72 120 1.94
50 19/1.78 94 150 88 140 1.47
70 19/2.14 115 190 110 175 1.08
95 37/1.78 140 230 135 215 0.840
120 37/2.03 155 250 0.718
150 37/2.25 180 280 0.636

Note: The current carrying capacities are based on an air ambient temperature of 40ºC, a maximum conductor temperature of 80ºC and exposure to direct sunlight having an intensity of 1000W/m². The values are based on the use of black XLPE.

(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 always be some air movement and the rating for 1.0m/s wind is recommended.

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