Resistance Correction Table
| Temperature |
Resistance Correction Factor |
| °C |
°F |
Copper |
Aluminum |
| 15.0 |
59.0 |
0.9804 |
|
| 16.0 |
60.8 |
0.9842 |
|
| 17.0 |
62.6 |
0.9882 |
|
| 18.0 |
64.4 |
0.9922 |
|
| 19.0 |
66.2 |
0.9961 |
|
| 20.0 |
68.0 |
1.0000 |
1.0000 |
| 20.5 |
68.9 |
1.0020 |
1.0021 |
| 21.0 |
69.8 |
1.0039 |
1.0041 |
| 21.5 |
70.7 |
1.0059 |
1.0062 |
| 22.0 |
71.6 |
1.0079 |
1.0082 |
| 22.5 |
72.5 |
1.0098 |
1.0103 |
| 23.0 |
73.4 |
1.0118 |
1.0123 |
| 23.5 |
74.3 |
1.0138 |
1.0144 |
| 24.0 |
75.2 |
1.0157 |
1.0164 |
| 24.5 |
76.1 |
1.0177 |
1.0185 |
| 25.0 |
77.0 |
1.0197 |
1.0205 |
| 25.5 |
77.9 |
1.0216 |
1.0226 |
| 26.0 |
78.8 |
1.0236 |
1.0246 |
| 26.5 |
79.7 |
1.0255 |
1.0267 |
| 27.0 |
80.6 |
1.0275 |
1.0287 |
| 27.5 |
81.5 |
1.0295 |
1.0308 |
| 28.0 |
82.4 |
1.0314 |
1.0328 |
| 28.5 |
83.3 |
1.0334 |
1.0349 |
| 29.0 |
84.2 |
1.0354 |
1.0369 |
| 29.5 |
85.1 |
1.0373 |
1.0390 |
| 30.0 |
86.0 |
1.0393 |
1.0410 |
| 30.5 |
86.9 |
1.0413 |
1.0431 |
| 31.0 |
87.8 |
1.0433 |
|
| 32.0 |
89.6 |
1.0471 |
|
| 33.0 |
91.4 |
1.0511 |
|
| 34.0 |
93.2 |
1.0551 |
|
| 35.0 |
95.0 |
1.0590 |
|
| 36.0 |
96.8 |
1.0630 |
|
| 37.0 |
98.6 |
1.0668 |
|
| 38.0 |
100.4 |
1.0709 |
|
| 39.0 |
102.2 |
1.0747 |
|
| 40.0 |
104.0 |
1.0786 |
|
To convert resistance to 20°C (68°F), divide resistance by the correction factor for the corresponding temperature and metal indicated in the above table.
To find ohms/foot, divide Volume Resistivity by area in circular mils. |