Thank you m_c, for the detailed explanation.

I am aware of the current spikes on switch on, but if we leave that aside for the moment, I thought that the power line current was also proportional to the current drawn on the motor side, for instance, I thought that if the VFD panel showed an increase of 30% in current, then the inline current would also increase by the same rate. I have not had a chance to observe that. Obviously if that isn't the case, in terms of monitoring the current, the VFD measurement is the one to monitor. Thanks

Edward