Cable Resistance Calculator


 
Cable Calculator Resistance with three decimals at 20 °C
please enter decimal separator as "."
Cable properties: Length in m: Diameter: Conductor made of: Circuit current in A (for voltage loss calculation)
 
     
 
Resistance of a single wire cable: Ohm Loop Resistance of a twin wire cable: Ohm
Voltage loss on single wire cable: V Loop voltage loss on a twin wire cable: V

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Recommendations for maximum current for cables:

Copper cable diameter Power distribution Equipment cables
0.5 mm2-3A
0.75 mm27.6A6A
1.0 mm210.4A10A
1.5 mm213.5A16A
2.5 mm218.3A
4 mm225A
6 mm232A

Data on different AWG cable sizes: 

AWG   Feet/Ohm  Ohms/100ft  Ampacity*   mm^2   Meters/Ohm  Ohms/100M
 10    490.2       .204        30      2.588    149.5       .669
 12    308.7       .324        20      2.053     94.1       1.06
 14    193.8       .516        15      1.628     59.1       1.69
 16    122.3       .818        10      1.291     37.3       2.68
 18     76.8       1.30         5      1.024     23.4       4.27
 20     48.1       2.08        3.3     0.812     14.7       6.82
 22     30.3       3.30        2.1     0.644     9.24       10.8
 24     19.1       5.24        1.3     0.511     5.82       17.2
 26     12.0       8.32        0.8     0.405     3.66       27.3
 28     7.55       13.2        0.5     0.321     2.30       43.4