Voltage Drop Calculator by electrician.com The following calculator calculates the voltage drop, and voltage at the end of the wire for American Wire Gauge from 4/0 AWG to 30 AWG, aluminum or copper wire. Select Copper or Aluminum Copper Aluminum Select American Wire Gauge (AWG) Size 18 AWG 30 AWG 28 AWG 26 AWG 24 AWG 22 AWG 20 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 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 VDC or 1-phase AC 48 VDC or 1-phase AC 12 VDC or 1-phase AC 6 VDC or 1-phase AC 3 VDC or 1-phase AC Enter 1-way circuit length in feet Enter Load in amps Voltage drop Voltage at load end of circuit Per Cent voltage drop Wire cross section in circular mils

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