To illustrate, assume these values: Line Voltage is 110 V, Steady State Current is 10 A, Capacitance is 5000 µF, Ambient Temperature Range is 10ºC to 35ºC, and Desired Inrush Current limit is 30 A. To calculate peak Voltage (Vpeak), one has to take line fluctuations into account (±10%) hence Vpeak is (110 V+11 V)*√2=171.1 V .