I presume you're talking about metal grips with insulation over the metal. In that case, the answer might well be 'yes' (with capacitive coupling through the {thin} insulation to your hand)
Does that not 'prove' my point - that these devices rely on capacitive coupling to earth through something like a human body?
Measurements with modern multimeters can be just as problematic as the issues of voltage detection devices we have been discussing, since the high impedance of these meters allows them to 'measure' what are simply 'induced voltages' picked up in one cable (or bit of metal) from another.. Although these induced voltages are 'real', their nature is such that that they are capable of resulting in virtually no current - hence no danger and, often, can't be even felt. If that's the case, then connecting some load (like an ordinary light bulb, or a medium-value resistor if you have one) between the probes of your multimeter would be expected to make these small measured voltages 'disappear'.
Well, proper VDE insulation, not just a plastic cover.
Yes.
Sure, but with a whole pile of metal inside. Had you held the device with some sort of plastic tool, the resuly may well have been different.
It presumably means that they have to be 'near enough' for there to be an adequate capacitive coupling to their body - it sounds as if through the thickness of VDE insulation is enough.
Aren't we quite probably back to these 'measurement issues' again? If we are talking about induced voltages, they might be >50V (or whatever) 'when left alone' (e.g. when detected by a non-contact device) but, when measured by a multimeter, although the meter's impedance will be high, it may well be low enough to drop the voltage right down to the small figures (<6V) that the multimeter has been displaying. ... but, as with everything in this saga, who knows?!
Indeed - as I said, exposed bodily tissues are very sensitive to electricity, particularly when wet (skin is a pretty good protector) - it only takes 50mV or so to activate a nerve cell or fibre. If you applied 12V via a couple of electrodes on your tongue, you'd probably experience more than just a 'tingle'!
I will have a think about how I do that bernardgreen, are you thinking that I measure between a radiator and true ground? and dig my willies out too Some typos are more of an issue than others... and dig my willies out too
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