Formula For Cable Size Calculation Fixed May 2026

For a , the approximate voltage drop ($V_d$) is:

$$ V_d = \frac{2 \times L \times I \times (R \cos\phi + X \sin\phi)}{1000} $$ formula for cable size calculation

A more accurate form for incorporates reactance ($X$): For a , the approximate voltage drop ($V_d$)