Experts assume that a current of up to 0.5 mA is still completely harmless, even if the current can already be perceived. Above 0.5 mA, the current is clearly perceptible, but not yet hazardous to health. What happens at what current strength depends on various factors: the path of the current through the body, the duration and frequency of exposure, the area of contact and the moisture of the skin. It is therefore difficult to determine the exact point at which contact with electric current causes long-term damage or is even life-threatening.
The dangers that can arise from electric shock range from falling off a ladder (as a result of the shock), burns, muscle cramps, respiratory arrest to cardiac arrhythmia, cardiac arrest and brain damage. As an electric shock is a massive intervention in the human body, all parts of the body can be affected – not only nerves, muscles and blood vessels, but also the skeleton. As a layperson, you should therefore assume that an electric shock is always dangerous and avoid potential risks.