[piotrsko]

With a capacitor current flow is logarithmic in decrease. Initial current is huge but rapidly decreases to eventual zero as the caps accept charge. AKA r-c time constant.

 

[piotrsko]

Last time I looked inside my SOL1 precharge was a 150. 10 watt ceramic ( I think). At 300 volts that would be something like 20 amps but only for 3 seconds until the relay drops out. Probably gets pretty warm but that is generally the only use per trip.

Use a 100 watt lightbulb. Down side is it is fragile so you should carry spares