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60 volts DC is a safety threshold. You start to move current through tissue at higher voltages.


Yes but state of your body/skin (R) and current (I) is what matters with regard to 60 volts being really dangerous (also the current path as the article below states).

60 volts is nothing UNLESS you are completely wet or sweaty.

"It is estimated at 150 ohms for completely wet skin (in water), 1000 ohms for sweaty skin, and 100,000 ohms to 500,000 ohms for dry skin."

Assuming a worst-case scenario with dry skin providing a resistance of 100,000 ohms, fatality becomes a possibility if the current exceeds 50 mAmp.

Therefore, the lethal voltage would be above 0.05 (50 mAmp)×100,000=5000 Volts. [1]

So if you are wet or sweaty, it could be 7.5V to 50V that gets dangerous.

So it makes sense why 60 volts is a safety threshold, especially for those that live in Florida or Arizona.

[1] https://www.scienceabc.com/humans/how-many-volts-amps-kill-y...


> 60 volts is nothing UNLESS you are completely wet or sweaty.

From experience I'm not touching 60v, sweaty or dry as sand - that voltage hurts! And 48v is seriously uncomfortable. People have died from less DC voltage in industrial settings.

Following EN61010, the max safe DC voltage in laboratory equipment is 35v for wet locations. For a car, we ought to assume that being wet is a possibility.


> 60 volts is nothing UNLESS you are completely wet or sweaty.

Ha, it’s always easy to tell when people have experience with these things.

Doorbell wiring is 48V. Go hold those in each hand and tell me how impossible it is to feel if your hands are dry.


Doorbell voltage in the US is typically 12V or 24V AC in the US. I can’t feel that with dry hands.

You might be confused with POTS (landline phone service) which is 48V DC with all phones not in use.


Just don't be holding on when it rings! That's painful, with 90 VRMS at 20 Hz.


What you stated is incorrect. Anyway, V=IR is a truth. If you touch 48v DV dry. You are going to be fine.




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