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Ground Fault Current Calculator
Estimate ground fault current based on system voltage and ground path impedance.
Line-to-Neutral Voltage
?
System line-to-neutral voltage.
V
Source Impedance
?
Upstream source impedance.
Ω
Line Conductor Impedance
?
Phase conductor impedance to fault.
Ω
Ground Return Impedance
?
Equipment grounding conductor impedance.
Ω
Fault Impedance
?
Impedance at the fault point.
Ω
Calculate
Results
Ground Fault Current
-
A
Total Loop Impedance
-
Ω
Touch Voltage
-
V
References:
NEC 250.4; IEEE Std 142 (Green Book); IEEE Std 1584