Southwire Voltage Drop Calc is a free iPhone application developed by Southwire Company. It is a useful tool for electricians and electrical engineers to determine the proper wire size for an electrical circuit. The app calculates the voltage drop and current carrying capacity of the circuit and provides the appropriate wire size based on these parameters.

This voltage drop calculator allows users to input specific voltage drop limits or calculate the voltage drop for a specific conductor run. It takes into account the NEC ampacity and limits the wire size accordingly. The calculations are based on AWG and KCMIL sizes only, ensuring accurate results for various applications.

With its user-friendly interface and accurate calculations, Southwire Voltage Drop Calc is a valuable utility for professionals in the electrical industry. It simplifies the process of determining the appropriate wire size, ensuring optimal performance and safety in electrical circuits.