Available fault current spreadsheet

Available fault current spreadsheet


This MS Excel Spreadsheet is created by mr. John Sokolik and it represents easy way to calculate fault current by entering few values in indicated fields.

You will find sheet with very nice example already fulfilled. Before starting fault current calculation, you will have to choose between Step 1a and Step 1b which are explained below.

Step 1a

Insert available fault current ampere rating from your local Utility.

Step 1b

Insert the the kVA rating power factor (PF) and impedance  (Z) of the transformer is not required to continue. Note: When you insert the kVA rating  power factor and impedance you must select the voltage from the dropdown box Select Voltage & Phase before the value will be calculated.

Spreadsheet information

Software:Fault Current Calculation (MS Excel Spreadsheet)
Developer:John Sokolik
Size:207 KB
Download:Right here | Get Download Updates | Get Technical articles

Fault Current Calculation Spreadsheet

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Page edited by E.C. (Google).


  1. David A Engelhart
    Feb 16, 2015

    I found an error in this calculator prior to this version when I learned how to calculate longhand. I also got John to add the Utility Fault Current cell that is present in this version. This file is also available at MikeHolt.com in his free stuff where I got my copy to critique. The Electrical Plan Review PDF file is what taught me to calculate fault current by longhand. http://www.mikeholt.com/technical-calculations-formulas.php

    • Mahendra Mistry
      Mar 19, 2015

      Can you provide information with examples on how to calculate fault levels the long hand method. Thanks.

  2. […] voltages and currents) from the system/apparatus and issues a trip decision if a fault within the protection relay‘s jurisdiction is […]

  3. walter graham
    Jan 26, 2015

    this is a very good website!

  4. .
    I work with Electricity Authority of Cyprus and i am the section head of High voltage cables.
    I really enjoy reading your articles. They are very good and very helpful.
    I am using your spread sheets for various calculations.
    Thank you

  5. […] and the EGC, the grounding clamp mechanically anchors the EGC to the cable tray so that under fault current conditions the magnetic forces do not throw the EGC out of the cable […]

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