Voltage Drop Calculator
Supply voltage
V
Load current
A
One-way run length
ft
Measure the distance to the load, not there and back. The formula doubles it for you on a single-phase circuit.
Conductor
Copper
Aluminium
Wire size (AWG or kcmil)
14 AWG
12 AWG
10 AWG
8 AWG
6 AWG
4 AWG
2 AWG
1 AWG
1/0 AWG
2/0 AWG
4/0 AWG
250 kcmil
500 kcmil
Circuit
Single-phase
Three-phase
Voltage dropped
7.46 V
Show the work
Voltage Drop Calculator
by Rule Calculator