Copper Wire Resistance - Solid or Stranded
Resistance of Copper Wire
The chart below is generally accepted as typical resistance in copper wire. Slight variations may exist between solid and copper wire, but those differences are so minor they do not factor into most project calculations.
These are the typical wire gauges most used for Low Voltage DC calculations.
AWG | Resistance Per 1 Ft (Ohms/Ft): | Resistance Per 10 Ft (Ohms/10 Ft): | Resistance Per 100 Ft (Ohms/100 Ft): | Resistance Per 1000 Ft (Ohms/1000 Ft): |
12 AWG | .001 ohms | .015 ohms | .158 ohms | 1.588 ohms |
14 AWG | .002 ohms | .025 ohms | .252 ohms | 2.525 ohms |
16 AWG | .004 ohms | .040 ohms | .401 ohms | 4.016 ohms |
18 AWG | .006 ohms | .063 ohms | .638 ohms | 6.385 ohms |
20 AWG | .01 ohms | .101 ohms | 1.015 ohms | 10.15 ohms |
22 AWG | .016 ohms | .161 ohms | 1.614 ohms | 16.14 ohms |
23 AWG | .02 ohms | .203 ohms | 2.036 ohms | 20.36 ohms |
24 AWG | .025 ohms | .256 ohms | 2.567 ohms | 25.67 ohms |
25 AWG | .032 ohms | .322 ohms | 3.237 ohms | 32.37 ohms |
26 AWG | .040 ohms | .408 ohms | 4.081 ohms | 40.81 ohms |