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Voltage Drop Calculator

# Voltage Drop Calculator

This calculator requires the use of Javascript enabled and capable browsers. This is designed to give the approximate loss factors in a circuit (AC or DC), including type of circuit, AWG (or KCMIL), amperage, length of circuit and type of conductor, for wire or circuit board. Enter the required data and click on Calculate. The results are returned as the estimated drop in voltage (the amount of voltage loss from original input in a conductor of given size and length), drop percentage, the load at most distant point in the circuit, and the conductor CMA. If you need to calculate the size of the wire, you might want to consider using our wire size calculator. We strongly suggest that you use the results here as they are intended, estimates. In the actual electronic and electrical tests in both commercial and residential, AC and DC applications, our calculations have been within one percent of the MEASURED voltage drop in every instance we have had the opportunity to check them. That track record is far better than the national code for acceptable deviation. We have had one note that implied that code formulae and practices, and our method for calculation were very different and yielded substantial differences. Although the note did not say that they had MEASURED the voltage drop and that our calculations were incorrect, the implication was there. For the sake of prudence and in order to comply with national and local code, secure the services of a qualified professional in your area.

 Required Data Entry Select Material - Wire Types -CopperAluminum- Board Circuit Types -SilverGold************************************ Select Size 18 AWG16 AWG14 AWG12 AWG10 AWG8 AWG6 AWG4 AWG3 AWG2 AWG1 AWG1/0 AWG2/0 AWG3/0 AWG4/0 AWG250 kcmil300 kcmil350 kcmil400 kcmil500 kcmil600 kcmil700 kcmil750 kcmil800 kcmil900 kcmil1000 kcmil1250 kcmil1500 kcmil1750 kcmil2000 kcmil************************************ Select Voltage and Phase 120 Volts 1-phase240 Volts 1-phase208 Volts 3-phase 3-wire120/208 Volts 3-phase 4-wire277 Volts 1-phase480 Volts 3-phase277/480 3-phase 4-wire24 DC or 1-phase AC48 DC or 1-phase AC************************************ Enter 1/2 Total Circuit Length Feet Enter Load Amps Calculated Results Estimated Drop Volts Load At Circuit End Volts Voltage Drop Percentage Conductor CMA
Version 4.4.9