Fault Current Finder

Fault Current Finder by Octagon Seven LLC

Remove uncertainty of compliance with NEC and OSHA for equipment and device rating requirements

The world’s easiest to use fault current finding tool

  • Meets IEEE/ANSI C37.13 LV standard for 3 phase symmetrical and momentary fault current
  • Fast!  Saves time & money during field visits
  • Simple UI navigation, no complicated menus
  • Highest accuracy per unit methodology
  • Easily develop full detailed map of entire distribution system
  • Inexpensive!  Costs a fraction of competative tools

Available for iOS, iPad & iPhone

Fault Current Finder is an advanced system modeling tool. It models an electrical distribution system to determine the available fault current anywhere within the system. This useful tool helps Engineers, Electricians and Facility Managers evaluate if devices and equipment such as fuses, circuit breakers, panels, switchboards and switches are rated to meet the available fault current. 

Methodology: The internationally recognized gold standard per unit methodology is used to calculate available fault current from Utility Transformers, Generators and Inverters.  Additional resistance and reactance factors from conductors, buses and switches are calculated throughout the system. Per unit calculations provide superior model accuracy by independently calculating resistance and reactance throughout the electrical distribution system to develop X & R values at each device. Entering custom X and R values provides highest accuracy calculations but standard X/R values specific to each device is also automatically available if unknown.

This app can be used to determine NEC (NFPA 70) and OSHA short circuit current ratings (SCCR) and interrupting rating (IR) for over current protection devices (OCPD) and associated equipment such as panels, switchboards, transfer switches, disconnect switches, fuses and circuit breakers in electrical distribution systems.  Utilizing separate network reductions for X & R networks it meets IEEE/ANSI C37.13 standards for calculating 3 phase symmetrical and momentary fault current in system 600V or less. 


Short Fault Current Finder tutorial here:

© 2018 Octagon Seven LLC, Patterson, NY