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.
Southwire Voltage Drop / What's New in vUnknown
Behind the scenes improvements.