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thelizman
 
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Default Capacitor, how to find out what size?

MZ wrote:
Hi,
Most electrical load is inductive by nature. So in rush current when
turned on is lot more than normal running current. Like if a motor draws
10 Amp when running, it can draw even 30 Amp for short moment when
turned on, starts spinning.



This has little to do with inductance. In the case of the light bulb, the
initial current is greater because of the temperature dependence of
resistivity for tungsten. A cold tungsten filament has a very low
resistance.


And in the case of electrical motors, the surge in current has to do
with the low impedance of the motors coil at startup.

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