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Voltage Drop Calculator
by
electrician2.com
k=12.9 for copper or k=21.2 for aluminum
Select Material
Copper
Aluminum
Select Size
18 AWG
16 AWG
14 AWG
12 AWG
10 AWG
8 AWG
6 AWG
4 AWG
3 AWG
2 AWG
1 AWG
1/0 AWG
2/0 AWG
3/0 AWG
4/0 AWG
250 kcmil
300 kcmil
350 kcmil
400 kcmil
500 kcmil
600 kcmil
700 kcmil
750 kcmil
800 kcmil
900 kcmil
1000 kcmil
1250 kcmil
1500 kcmil
1750 kcmil
2000 kcmil
Select Voltage and Phase
120 Volts 1-phase
240 Volts 1-phase
208 Volts 3-phase 3-wire
120/208 Volts 3-phase 4-wire
277 Volts 1-phase
480 Volts 3-phase
277/480 3-phase 4-wire
24 DC or 1-phase AC
48 DC or 1-phase AC
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