Is there a failsafe way to confirm that a high-voltage circuit could not store or develop enough amperage to become lethal?
Assuming we're looking at circuits fed by regular 15A 120VAC, for example, if there are no capacitors larger than some size -- or no capacitors at all -- could we say it's "non-lethal?"
Or suppose I tap into a circuit of unknown construction (e.g., I don't know ahead of time whether it is AC, DC, or what voltage) at only two conductive points at a time: Could I put a resistor or some other device in line with the two access points that would not attenuate voltage but would guarantee I couldn't experience a lethal discharge between them?
Assuming we're looking at circuits fed by regular 15A 120VAC, for example, if there are no capacitors larger than some size -- or no capacitors at all -- could we say it's "non-lethal?"
Or suppose I tap into a circuit of unknown construction (e.g., I don't know ahead of time whether it is AC, DC, or what voltage) at only two conductive points at a time: Could I put a resistor or some other device in line with the two access points that would not attenuate voltage but would guarantee I couldn't experience a lethal discharge between them?