If this is a VFD it will be connected to mains. You need to be absolutely sure the pot ground pin is
mains ground (or safely isolated) before connecting to it, if its mains neutral (for instance) you are
risking life and limb.
If this is a VFD it will be connected to mains. You need to be absolutely sure the pot ground pin is
mains ground (or safely isolated) before connecting to it, if its mains neutral (for instance) you are
risking life and limb.