Fault Current Calculator
Estimate available short circuit current at transformer secondary
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How to Use This Calculator
Transformer kVA.
Volts.
Impedance.
Get SCA.
Understanding Fault Current Calculations
Fault current.
AIC rating.
Arc flash.
Bracing.
Formula & Calculations
FLA / %Z
Key Factors to Consider
Utility contribution
Motor contribution
Wire length
Breaker rating
Frequently Asked Questions
1Why calculate?
Ensure breakers don't explode.