(extracted form DIN VDE 0295, IEC 60228 & HD 383)

The values are extracted from DIN VDE 0295 (equivalent with the international standard IEC 60228 and HD 383), according to cross-sections and conductor classes, begninning with nominal cross-section of 0.5mm. The diameters of the single wires of each bunched conductor are not permitted to exceed the maximum stated values (ref. DIN VDE 0295), which are required to conform the maximum resistance value of the bunched conductors at 20 oc.

Nominal cross-section (mm) Copper conductor plain wires (Ohm/km) class 1 & 2 Copper conductor plain wires (Ohm/km) class 5 & 6 Copper conductor tinned wires (Ohm/km) class 1 & 2 Copper conductor tinned wires (Ohm/km) class 1 & 2 Welding cable (Ohm/km)
Copper conductor plain wires		 Welding cable (Ohm/km)
Copper conductor tinned wires
0,05 - ~380 - ~392 - -
0,08 - ~237 - ~244 - -
0,11 - ~170 - ~175 - -
0,126 - ~150 - ~155 - -
0,14 - ~134 - ~138 - -
0,22 - ~96 - ~99 - -
0,25 - ~76 - ~79 - -
0,34 - ~53 - ~56 - -
0,5 36,0 39,0 36,7 40,1 - -
0,75 24,5 26,0 24,8 26,7 - -
1,0 18,1 19,5 18,2 20,0 - -
1,5 12,1 13,3 12,2 13,7 - -
2,5 7,41 7,98 7,56 8,21 - -
4,0 4,61 4,95 4,70 5,09 - -
6,0 3,08 3,30 3,11 3,39 - -
10,0 1,83 1,91 1,84 1,95 - -
16,0 1,15 1,21 1,16 1,24 1,16 1,19
25,0 0,727* 0,780 0,734 0,795 0,758 0,780
35,0 0,524* 0,554 0,529 0,565 0,536 0,552
50,0 0,387* 0,386 0,391 0,393 0,379 0,390
70,0 0,268* 0,272 0,270 0,277 0,268 0,276
95,0 0,193* 0,206 0,195 0,210 0,198 0,204
120,0 0,153* 0,161 0,154 0,164 0,155 0,159
150,0 0,124* 0,129 0,126 0,132 0,125 0,129
185,0 0,0991 0,106 0,100 0,108 0,102 0,105
240,0 0,0754 0,0801 0,0762 0,0817 - -
300,0 0,0601 0,0641 0,0607 0,0654 - -
400,0 0,0470 0,0486 0,0475 0,0495 - -
500,0 0,0366 0,0384 0,0369 0,0391 - -
630,0 0,0283 0,0287 0,0286 0,0292 - -

Class 1 = single conductor for single and multi core cables
Class 2 = multi conductor for single and multi core cables
Class 5 = fine wire copper conductors for single and multi core cables
Class 6 = extra fine wire copper conductors for single and multi core cables

* for mineral-insulated cables (class 1 up to 150.0mm)