Fault Current Calculator (PFC)

Fault Current Calculator for Android, the fast, free tool electricians trust to calculate Prospective Fault Current (PFC), Prospective Short Circuit Current (PSCC) and Prospective Earth Fault Current (PEFC) on site, in seconds. Enter any two values, Voltage, Loop Impedance (Zs/Ze) or Fault Current and the app instantly calculates the third. KEY FEATURES PSCC & PEFC Calculations Calculate Prospective Short Circuit Current (L-N or L-L) and Prospective Earth Fault Current (L-E) instantly. Single Phase & Three Phase Full support for both single phase and three phase fault current calculations. Solve for Voltage, Zs or PFC Enter any two known values and the calculator works out the third automatically. Loop Impedance (Zs/Ze) Calculator Quickly calculate earth fault loop impedance from the voltage and PEFC. Formula Shown See the exact formula used for every calculation, so you can check and understand your results. 100% Offline No signal, no problem. Calculate fault current anywhere — roof spaces, basements, plant rooms. Dark Mode Easy on the eyes for site work in low light. 16 Languages Fully translated for electricians worldwide. Fast & Free Clean, simple interface built for speed — get your answer and get back to work. Whether you're testing PSCC, PEFC, earth loop impedance or general prospective fault current on an installation, this calculator gives electricians, contractors and engineers a quick, reliable way to check figures on the go — ideal for periodic inspection and testing, EICRs, and new installation certification. Electrical PFC fault current calculator for Android. Calculate to or from PFC, voltage or earth loop impedance, enter any two values to calculate the third. Want more electrical tools? Upgrade to our full "Electrical Tools & Reference" app for kVA, Watts/Amps/Volts, cable sizing and more calculators all in one app. Trusted by electricians since 2011.