5 ms·

Inertia and fear of the unknown. Also below 50V is generally considered "safer" and anything around 100 and up is "dangerous" due to the impedance of the human

Inertia and fear of the unknown. Also below 50V is generally considered "safer" and anything around 100 and up is "dangerous" due to the impedance of the human body.

mixedCase 10y ago
Dangerous as in a bad kick, but it can't fry you like current AKA amps can (which is usually the worst part, which you want to avoid).
- deleted 10y ago
  [deleted]
- mindslight 10y ago
  That's like saying that falling off a building can't kill you (because it's actually the stop that does). You lower the current by lowering the voltage.
  - IanCal 10y ago
    > You lower the current by lowering the voltage. I assume you meant increasing there.
    - Mchl 10y ago
      I = V/R So once the voltage is applied to your body, the higher it is, the more current flows through you (Some assumptions about source of electricity made)
    - tempestn 10y ago
      If you're talking about a controlled situation where you need to provide a given amount of power - ie driving the accessories of a car, then yes, a lower voltage would require higher current. P = IV When you're talking about safety though, the issue is what happens if the voltage gets applied to your body. In that case the relevant formula is I = V/R. R is the resistance of whatever circuit you've mistakenly formed through your body. The higher the voltage applied across that circuit, the higher the current that will flow. (This is also why it's more dangerous if you're wet, or in bare feet, for instance, because those things lower your resistance, resulting in greater current for a given voltage.)
    - seanp2k2 10y ago
      https://learn.sparkfun.com/tutorials/voltage-current-resistance-and-ohms-law/voltage https://learn.sparkfun.com/tutorials/voltage-current-resista... looks like a good resource if anyone reading this has no idea what we're talking about. Don't feel bad, we were all beginners once :)
- simcop2387 10y ago
  https://www.youtube.com/watch?v=XDf2nhfxVzg https://www.youtube.com/watch?v=XDf2nhfxVzg Current and Voltage are intimately related. 1V with a 1kA capable supply will not hurt you.

Inertia and fear of the unknown. Also below 50V is generally considered "safer" and anything around 100 and up is "dangerous" due to the impedance of the human body.

mixedCase 10y ago

Dangerous as in a bad kick, but it can't fry you like current AKA amps can (which is usually the worst part, which you want to avoid).

deleted 10y ago
[deleted]
mindslight 10y ago
That's like saying that falling off a building can't kill you (because it's actually the stop that does). You lower the current by lowering the voltage.
- IanCal 10y ago
  > You lower the current by lowering the voltage. I assume you meant increasing there.
  - Mchl 10y ago
    I = V/R So once the voltage is applied to your body, the higher it is, the more current flows through you (Some assumptions about source of electricity made)
  - tempestn 10y ago
    If you're talking about a controlled situation where you need to provide a given amount of power - ie driving the accessories of a car, then yes, a lower voltage would require higher current. P = IV When you're talking about safety though, the issue is what happens if the voltage gets applied to your body. In that case the relevant formula is I = V/R. R is the resistance of whatever circuit you've mistakenly formed through your body. The higher the voltage applied across that circuit, the higher the current that will flow. (This is also why it's more dangerous if you're wet, or in bare feet, for instance, because those things lower your resistance, resulting in greater current for a given voltage.)
  - seanp2k2 10y ago
    https://learn.sparkfun.com/tutorials/voltage-current-resistance-and-ohms-law/voltage https://learn.sparkfun.com/tutorials/voltage-current-resista... looks like a good resource if anyone reading this has no idea what we're talking about. Don't feel bad, we were all beginners once :)
simcop2387 10y ago
https://www.youtube.com/watch?v=XDf2nhfxVzg https://www.youtube.com/watch?v=XDf2nhfxVzg Current and Voltage are intimately related. 1V with a 1kA capable supply will not hurt you.