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Voltage Drop

Three Phase Voltage Drop, "VD" = (1.732 x K x I x L) / CM

Single Phase Voltage Drop, "VD" = (2 x K x I x L) / CM

Percent Voltage Drop, "%VD" = (VD / E) x 100

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

Voltage Drop Calculations:

Amperage, "I"
Length (Feet), "L"
Choose Wire Size

Percent Voltage Drop Calculations:

Voltage, "E"