How many volts of voltage can electrocute a person? Can 220V electrocute people?

Industry regulations for safety voltage.

is 36V and the safe current is 10mA for the following reasons:

The degree of harm to the human body of electric shock mainly depends on the size of the current passing through the human body and the length of time it is on. The strength of the current.

The greater the danger, the greater the mortal danger; The longer it lasts, the more likely it is to die. The minimum value of current that can be perceived by a person is called the perceived current, which is 1 mA for AC and 5 mA for DC; The maximum current that a person can get rid of after an electric shock is called getting rid of the current, which is 10mA for AC and 50mA for DC; The current that is life-threatening in a relatively short period of time is called a lethal current, such as a current of 100mA passing through the human body for 1s, which can be enough to make a person fatal, so the lethal current is 50mA. In the case of protection against electric shock, the current allowed by the human body can generally be considered as 30mA.

The human body's response to electric currents:

8 10mA hands have difficulty getting rid of the electrodes and have a sharp pain (finger joints).

20 25mA hands quickly paralyzed, unable to get rid of electrodes automatically, breathing difficult.

50 80mA is difficult to breathe, and the atria begin to tremble.

90 100mA respiratory paralysis, after three seconds the heart begins to paralyze and stops beating.

It depends on how long you touch it, and you can be electrocuted if you keep 6 volts, but the standard voltage is 36 volts. There is danger in exceeding.

A voltage of 220 volts can electrocute a person. A power supply with a voltage of less than 36 volts is safe and will not cause harm to the human body, and a voltage of 220 volts will electrocute a person after passing through the human body.

Under normal circumstances, the human body passes 50 milliamps of electricity per second to be life-threatening. In a humid environment (such as in the shower), 12 volts can knock a person down.

However, it is also believed that the external resistance of men is 2000 ohms, while women are less than about 1000 ohms relative to men. In general, the body resistance of 220V power frequency voltage is 500 ohms, and the resistance is within 2000-1000 ohms. Based on the calculation of i=u r, the current of more than 100mA flows through the human body, and there is almost no hope of survival.

Therefore, it is not necessary that 220V can electrocute a person, mainly depending on the specific current through the human body.

Measures after electric shock:

Quickly cut off the main power supply, and use insulation to separate wires and electrical appliances from the wounded to avoid successive electric shocks.

If the person is conscious, the person should lie down and rest quietly. Do not allow the person to move around to reduce the burden on the heart, and closely observe the changes in their breathing and pulse.

If the person is unconscious, weak or stops breathing, CPR should be given immediately. <>