Fires and injuries at 230V aren't caused by the voltage, but by improper installation and handling. Don't stick forks in outlets, turn the power off when you're working with it, etc.
Also, it's not the voltage that kills you, it's the amperage. With regards to the 12V discussion, there's also AC vs DC to consider; AC will flip voltage 60x a second, making your heart go haywire, whereas DC is a continuous jolt, meaning your heart and other muscles will freeze in place until the power is released again, like how a defibrillator works.
> Also, it's not the voltage that kills you, it's the amperage.
A bit off-topic but I never liked that saying, it is kind-of-right but also soo wrong in so many levels. Amperage is not a thing that happens on its own, it is always a result of voltage, voltage is the driving force, so it is the voltage that actively kills you, by forcing amperage through your internals. When the killing happens the voltage is the real murderer, the amperage is just the murder weapon.
My hypothesis has been that the saying is due to how we generally think about power supplies. The voltage is a fixed quantity but the current fluctuates based on what the circuit asks for and what the power supply can give you. Something could be rated at 100V, but if the supply can’t deliver any significant amps it doesn’t matter much
Also, it's not the voltage that kills you, it's the amperage. With regards to the 12V discussion, there's also AC vs DC to consider; AC will flip voltage 60x a second, making your heart go haywire, whereas DC is a continuous jolt, meaning your heart and other muscles will freeze in place until the power is released again, like how a defibrillator works.