Im using a resistor (68Ohm) to discharge a capacitor bank rated at around 400V. This is the graph of the current and the power in the resistor, as you can see there is a 2KW (4.5A) peak. But it's just in around 100ms, I wont repeat the pulse in 3 seconds or more. What value should I use for the power rating of the resistor ? Thanks.
RMS in 2 seconds: ~20W RMS in 3 seconds: ~13.5W