Hello,
I've watched Dave's video regarding the dangers of placing a scope's probe ground and tip however one wants without taking into consideration the ciruitry one is trying to measure.
I've found to be hundred of volts of potential between the ground pins on the scope's probes and a lot of other object connected to mains such as the outer shell of a usb connector and the case of a power supply.
I've tried connecting the scope to a DC to AC power inverter to isolate it from the mains but the high voltage potential was still there.
None of the electronics are grounded and there is no physical connection between the scope's ground and the hot or neutral wire so how the hell am I getting shocked to pretty much every metal surface I touch. I just can't seem to understand where the voltage potential is coming from.
How can I avoid getting electrocuted by touching the ground and the bare metal of other electronics devices?
Thanks.