Safety / Protection Formulas
Safety and protection formulas size fuses, isolation barriers, and clearance distances that keep equipment and people safe. These calculators help you meet protection requirements and survive fault conditions. They are essential wherever mains or high energy is involved.
Safety / Protection Formula Calculators
- Fuse I²t Rating I²t = I² × t
- Touch Voltage / Body Current V = I × R_body
- Hi-Pot Test Voltage V_test = 2 × V_working + 1000
- MOV Surge Energy E = 0.5 × C × (V_clamp² − V_supply²)
- GFCI Leakage Current I = V / R_path
- Circuit Breaker Fault Power P_fault = V × I_fault
- Capacitor Safe-Discharge Time t = −R · C · ln(Vsafe / V0)
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