Generally speaking, the safe voltage that the human body can bear is 36 volts, and the safe current is 10 mA. When the resistance of the human body is constant, the higher the voltage the human body contacts, the greater the current passing through the human body, and the more serious the harm to the human body.
Safe current is also called safe flow or allowable continuous current, and human safety current is the lowest value of current passing through human body. Generally, the current of 1mA will feel when it passes, and it is difficult for the human body above 25mA to get rid of it. 50mA is life-threatening. It can mainly lead to cardiac arrest and respiratory paralysis.
affect
After electric shock, the influence of current on human body is mainly determined by the magnitude of current flowing through human body, the duration of current passing through human body, human impedance, current path, current type, current frequency, and the weight, gender, age, health status and mental state of the electrocuted person. The human body resistance consists of (internal resistance) and (skin), and the internal resistance is basically stable, about 500 Ω. When the contact voltage is 220V, the average resistance of human body is1900 Ω; When the contact voltage is 380V, the human body resistance drops to1200 Ω.