Resistance Change with Temperature

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The calculation for change in resistance based on temperature change is included here as a calculator topic. Working electricians do not need to make this calculation.

As a conductor gets hotter, the resistance goes up. There is a calculation to determine the resistance at various temperatures. This calculation only works for temperatures which are higher than 75 degrees C.

Formula: resistance at 75 degrees C times ( 1 + .00323 times (new temperature minus 75) ) equals read answer

Be sure to include parenthesis, including the double one, where they are in the formula.

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