The response to electric current occurs only after it passes through human tissue. In these cases, there are muscle spasms or respiratory arrest and heart, which makes a man self free from contact with installing (or wires) in tension. The degree of a person depends on the nature and magnitude of voltage and current, the frequency of electric current, the current path through the person, the duration of the current, conditions the external environment. Practice shows that salvation is possible if the time during which a person is under the influence of electric current does not exceed 4 ... 5 min.
The human body has an electrical resistance which is composed of skin resistance and the resistance of the internal organs. The calculations related to determining the current through the human body resistance Rchel assumed to be 1000 ohms. The amount of current, passing through a human being is a factor determining the severity of shock. Cerebral palsy symptoms may also support this cause. The electric current passing through the human has a complex physical and biological effects on key systems organism, which is reflected in the excitation of muscle and nerve tissue, burns, internal and external bodies, the electrolysis of the blood. The man begins to feel the flow of current at 50 Hz at force 0.6 ... 1.5 mA. When the current 10 ...
15 mA there muscle spasms of hands that man alone can not overcome, ie, the person is unable to pry his hand, which deals with current-carrying parts of the plant. The magnitude of this current is called the threshold was not released. At current passes in 25 ... 50 mA arise muscle spasms of the chest that causes a disturbance or cessation of breathing. Prolonged exposure to the current of this magnitude (5 ... 7 min), death can occur as a result of the termination of the lungs. Current force of 50 mA or more calls to stop or chaotic heartbeat that leads to the cessation of circulation. This current is considered fatal. The varied effects of electric current can be reduced to two types of destruction; electrical injuries and electrical shocks. Electrical injury - damage to the tissues of the body is under the influence of passing an electric current, expressed in the form of an electrical burn, plating the skin, mechanical damage, electrical signs. Electric shock causes stimulation of living tissue under the action of passing an electric current is accompanied by involuntary contractions of myshts.Chitat more .. Article 'Life Safety'
The human body has an electrical resistance which is composed of skin resistance and the resistance of the internal organs. The calculations related to determining the current through the human body resistance Rchel assumed to be 1000 ohms. The amount of current, passing through a human being is a factor determining the severity of shock. Cerebral palsy symptoms may also support this cause. The electric current passing through the human has a complex physical and biological effects on key systems organism, which is reflected in the excitation of muscle and nerve tissue, burns, internal and external bodies, the electrolysis of the blood. The man begins to feel the flow of current at 50 Hz at force 0.6 ... 1.5 mA. When the current 10 ...
15 mA there muscle spasms of hands that man alone can not overcome, ie, the person is unable to pry his hand, which deals with current-carrying parts of the plant. The magnitude of this current is called the threshold was not released. At current passes in 25 ... 50 mA arise muscle spasms of the chest that causes a disturbance or cessation of breathing. Prolonged exposure to the current of this magnitude (5 ... 7 min), death can occur as a result of the termination of the lungs. Current force of 50 mA or more calls to stop or chaotic heartbeat that leads to the cessation of circulation. This current is considered fatal. The varied effects of electric current can be reduced to two types of destruction; electrical injuries and electrical shocks. Electrical injury - damage to the tissues of the body is under the influence of passing an electric current, expressed in the form of an electrical burn, plating the skin, mechanical damage, electrical signs. Electric shock causes stimulation of living tissue under the action of passing an electric current is accompanied by involuntary contractions of myshts.Chitat more .. Article 'Life Safety'
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