Southwire's voltage drop calculator will help you determine the proper wire size for an electrical circuit based on the voltage drop and current carrying capacity of an electrical circuit. Determines wire size to meet specific voltage drop limits or calculates voltage drop for a specific conductor run. When sizing conductors, calculations limits wire size to voltage drop and NEC ampacity. Southwire's Voltage Drop Calculator is designed for applications using AWG and KCMIL sizes only.
- Extended results are modified to have more specific information
- Pop up has been added to get attention of the user whenever there is a warning on conductor sizes
Ratings and Reviews
Choice Between AWG and Metric wire Gauge
Why does this app give a choice of Metric vs. Imperial? When I chose metric in the inputs and go to the next screen for voltage drop calculation there is no option but to use AWG and no option for metric cable size e.g. 2.5, 4, 6, 10, 16, 25, 35, 40, 50, 70, 95, 120, 150, 185, 240, 300, 400 mm2 size conductors. I am currently working British Standard regulations and really though I had something useful with this app for a min. Guess not.
We're sorry to hear Southwire's Voltage Drop Calculator did not meet your needs. Metric vs. Imperial refers to the cable length, not the cable size. We understand how that could be confusing, so we're going to make some changes to the app store description and within the app itself to make this easier to discern. Southwire's Voltage Drop Calculator is designed for applications using AWG and KCMIL sizes only.
Updated app not so simple
The original app was very easy to use and very simple, after putting in a simple calculation using #8 wire, the numbers just didn't add up. Didn't understand what is meant by "imperial" vs "metric" although I know what metric is
Thanks guy for making life easier good looking
With Family Sharing set up, up to six family members can use this app.