Circular Mils from Voltage Drop

Circular Mils from Three Phase Voltage Drop, CM = (1.732 X K X I X L) / VD

Circular Mils from Single Phase Voltage Drop, CM = (2 X K X I X L) / VD

K = 12.9 for Copper, and K = 21.2 for Aluminum

Amperage, "I"
Length (Feet), "L"
Voltage, "E"
0.5 % 1 % 2 % 3 % 4 % 5 % 6 % 7 % 8 % 9 % 10 % 11 % 12 % 13 % 14 % 15 % Max Percent VD, Max % VD

Check your minimum conductor size!