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Voltage Drop Calculator


This calculator uses K = 12.9 circular mil ohms per foot
for copper or K = 21.2 cicular mil ohms per foot for aluminum.
These values assume a conductor operating temperature
of 75 degrees C. For other values of K based on conductor
temperature use the advanced voltage drop calculator.

Select Material
Select Size
Select Voltage and Phase
 
Enter 1-way circuit
length in feet

Enter Load
in amperes
Voltage drop
Voltage at load
end of circuit
Per Cent
voltage drop
cma of
conductor