Measuring Inrush Current with an Oscilloscope, Circuit Breakers and Clamp Meters

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In this video I use an oscilloscope to measure the inrush current caused by an induction motor starting with a variable speed drive (VFD). I do this to show some of the challenges clamp meters can face getting this measurement as an RMS reading when there is distortion of the waveform.
I also explain how an electrothermal circuit breaker works by preventing overloads and short circuits.
Circuit breaker instantaneous tripping current, should it be RMS or peak current?

Equipment used:
Agilent / Keysight DSO-X 2000 Oscilloscope
HT Instruments HT9022 Power Clamp Meter
Yokogawa CW10 Power Clamp Meter
Fluke 43B Power Quality Analyzer
Thermal magnetic circuit breaker

Useful links:
Circuit Breakers - How they Work, What's Inside :
   • Circuit Breakers - How they Work, What's I...  

Circuit Breakers:
http://en.wikipedia.org/wiki/Circuit_...
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