AC / DC Voltage Drop Circuit Calculation

The calculator will calculate the voltage drop.

Enter Current Load (I) amp:
Wire length (L) feet  feet:
Cross sectional area of wire (D)  kcmil:
Select wire Material:
Select Phase:
Select Volts:

Voltage drop (conductor temp of 75 ° C ): 
Minimum wire size: 

The calculation of voltage drop (conductor temp of 75 ° C ) and Minimum wire size for given values of Current Load, Wire length, Cross sectional area of wire, wire Material, number of Phase and Voltage. It works for both AC and DC voltage.


Voltage drop (Vd)=P*I*L*R/D


I= Current Load of circuit,

L=Cable length,

R= Resistance factor of cable material,

D= cross sectional area of conductor,

P=2 for Single phase

1.732 for three phase