Software package Cable Sizing

As a cable sizing study module, ETAP provides optimal and alternative cable sizes based on the following: Load current Voltage drop Motor minimum starting voltage Short circuit requirements of protective devices Overload requirements of protective devices Load Current By using this cable sizing analysis software, load current can be based on the full-load amp of any element on the one-line diagram or as a user-specified value. You can size cables (motor feeders, transformer cables, etc.) instantly based on the cable derated ampacity for any type of installation, e.g. direct banks, trays, conduit in air, etc. More details can be found on our Cable Ampacity page. Voltage Drop By using this cable sizing assessment tool, the user can size cables based on cable percent voltage drop calculated from the bus base kV. Motor Starting Voltage This cable sizing program calculates the cable sizing based on motor minimum start voltage (percent of motor rated kV). Short Circuit Current / Protective Device ETAP’s cable sizing module allows you to calculate the sizing of the cables based on the upstream protective device overload current and overcurrent time of maximum three-phase current.