AC Voltage Drop Calculator

Calculate voltage drop in AC circuits considering resistance, inductance, and power factor. This calculator helps determine voltage drop in single-phase and three-phase systems.

V
A
Ω/km
Ω/km
km
V
A
Ω/km
Ω/km
km

Reference Values

Typical Conductor Properties
Size Resistance (Ω/km) Reactance (Ω/km)
2.5 mm² 7.41 0.108
4 mm² 4.61 0.101
6 mm² 3.08 0.091
Acceptable Voltage Drop
  • Lighting circuits: 3%
  • Power circuits: 5%
  • Motor starting: 10%
//Cookies Accepted Cookie Consent