What is the safe current for the human body?

Take the power frequency current of 50Hz as an example: the current below 1mA is almost not felt, and at 15-20mA, the electrode held is not easy to loosen, which is called spasmodic current. The current of 50mA can only be tolerated for a short time, and the action time will make people unconscious, so it is generally considered that 50mA is a dangerous value current.

Above 100 mA, it can quickly kill people.

Industry regulations. The 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 greater the current intensity, the greater the fatal 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 safe voltage for a person is 36V, the safe current is 5000 ohms for a person, and the minimum is 200 ohms (depending on environmental factors).

The safety voltage is 36 volts, and the safety current is 1 ampere.

The safety voltage is 36V and the safety current is 10mA

If it weren't for the zero line of fire caught together, it would be fine.

But it's hard to say if you catch them together.

Generally, it is fine if it is less than or equal to 36.

But you can't hold on for too long.

36V10 seconds, below 34V, current indirect type), the same will hang if the time is long.

The human safety current is 10 mA.

The safety current is also called the safe flow rate or the allowable continuous current, the lowest value of the human body safety current through the human body current.

So generally speaking, the safe voltage that the human body can withstand is 36 volts, and the safe current is 10 milliamperes. Once the resistance of the human body reaches a certain level, the higher the voltage that the human body is exposed to, the greater the current passing through the human body, and the more serious the damage to the human body.

There is a slight sensation when it is just exposed to the passage of 1 mA, but it is difficult to get rid of it when more than 25 mA passes through the human body. Once it is 50mA, it will be life-threatening. It can even cause the heart to stop.

Precautions for electricity use in daily life.

The leakage in daily life is generated by a certain potential difference between the electrical shell and the mains fire wire after being connected to the ground due to individual reasons, if the electrical shell is not well grounded, there may be a risk of electric shock, so the electrical equipment must ensure good grounding, and at the same time the leakage protector should be installed on the power bus. Make sure safety comes first.

In general, high-voltage places where space discharges occur, such as lightning areas and the surrounding area of the home transformer. Therefore, when going out, be careful to stay away from areas with high voltage danger signs, and be careful not to stand under large trees and high mountains when there is light rain and thunder and lightning.

The above content reference: Encyclopedia - Human Safety Current.

In general, the safe voltage that the human body can withstand is 36 volts, and the safe current is 10 milliamps. When the resistance of the human body is constant, the higher the voltage that the human body is exposed to, the greater the current through the human body, and the more serious the damage to the human body. The safe current is also known as the safe flow rate or allowable continuous current, and the human body safety current is the lowest value of the current passing through the human body.

Generally, a current of 1 mA is felt when it passes, and it is difficult for the human body to get rid of it above 25 mA. 50mA is life-threatening. Mainly, it can lead to cardiac arrest and respiratory paralysis.

The safety voltage is less than or equal to 36 volts.

Since everyone's resistance is different, the current will also be different.

Current (i) = voltage (u) resistance (r).

Perceptual current: The smallest current that can elicit a human sensation.

Get rid of the current: the current limit value of the power supply that can get rid of the power supply by itself after being electrocuted, 10mA.

Fatal current: When an electric current passes through the human body, the ventricles of the heart cause a fibrillatory beat, and the current value of dying is 500mA.

1. Get rid of the current size:

Adult males: about 16 mA on average and about 9 mA on average.

Adult females: the average is about 9 mA and the minimum is about 9 mA.

2. The way through which the current passes through the human body.

Any way of electric current through the human body can cause death. The passage of electrical current through the heart, central nervous system (brain and spinal cord), and respiratory system is the most dangerous.

Therefore, from the left hand to the chest is the most dangerous current path, when the heart, lungs, spinal cord and other vital organs are in the circuit, which can easily cause ventricular fibrillation and central nervous system disorders and death; The route from the right hand to the foot is less dangerous, but it can cause a fall due to spasms; It is less dangerous to go from the right hand to the left hand than from the right hand to the toe; The least dangerous route of electrical current is from foot to foot, but the person who is electrocuted may fall due to spasms, causing the current to pass through the body or secondary accidents.

Encyclopedia – Get rid of electric currents.

Encyclopedia – Deadly Currents.