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Aluminum and Copper Wires - Electrical Resistance vs. Cross-Sectional Area

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Electrical resistance in single core conductors:

Aluminum and Copper Wires - Electrical Resistance vs. Cross-Sectional Area
Cross Sectional Area
(mm2)

Resistance
(ohm/km)

Copper Aluminum
0.5 34.5 53
0.75 23 35.3
1.0 17.2 26.5
1.5 11.5 17.7
2.5 6.9 10.6
4.0 4.3 6.6
6.0 2.9 4.4
10 1.7 2.7
16 1.1 1.7
25 0.69 1.1
35 0.49 0.76
50 0.34 0.53
70 0.25 0.38
95 0.18 0.28
120 0.14 0.22
150 0.11 0.18
185 0.093 0.14
240 0.072 0.11
300 0.058 0.088
400 0.043 0.066
500 0.035 0.053
630 0.027 0.042

Download and print Copper and Aluminum Wire - Electrical Resitance chart

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