In rush current >10A for a few milliseconds?

Rob Heath

• July 09, 2024 13:43

I want to log the current that my 12V fridge draws. The manual says it's a 5A load, but I belive the in rush current when the motor starts can be 20A ish for a few micro seconds. Will that upset a Pokit Pro please?

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  Ezra C

  • July 10, 2024 02:45

  Hey Rob,

  The Pokit Pro should handle it as the 10A rating on the fuse is for a constant current.

  The fuse should be ok for a 1 second inrush of 20A,

  The characteristic curve shows it should survive 2 seconds of 20A.

  

  The internal circuitry of the Pokit Pro can't measure >16A so the measurement will clip at 16A (it shouldn't damage the circuit to go above 16A, just can't measure it).

   

  Hope this helps.

   

   

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