Formula For Cable Size Calculation 👑

To size a cable for a 100 A load current, 30 meters long, with a 3% voltage drop allowed on a 230V supply, and assuming copper conductors:

However, for a more precise calculation related to cable sizing standards (like IEC 60364 or NEC), you might use: formula for cable size calculation

To calculate the correct cable size, you need to understand three primary variables: How much electricity is flowing? Voltage Drop: How much energy is lost over the distance? To size a cable for a 100 A

Before sizing the cable, you must determine the current the cable must carry. 30 meters long

Ib=PV×PFcap I sub b equals the fraction with numerator cap P and denominator cap V cross cap P cap F end-fraction