Voltage Drop Calculator

This calculator uses K = 12.9 circular mil ohms per foot for copper or K = 21.2 circular mil ohms per foot for aluminum. These values assume a conductor operating temperature of 75 degrees C.

System Parameters

Conductor Material:

Conductor Size:

Circuit Type

Circuit Length:

 in feet (one way)

Load Current:

 in Amps


Answers

Voltage drop:

Volts

Voltage at load end of circuit:

Volts

Percent voltage drop:

%

cma of conductor:

Circular mills