How much harm will the human body suffer from direct contact with 220V household electricity?

If the feet and hands directly touch 220V, they will die instantly, because the current intensity of the 220V power supply is large enough, and more importantly, direct contact. For example, when some cars are washed, the motor will break through and leak electricity. This is not what I heard, but what I saw. If the hand directly touches 220V, not necessarily, because the current does not directly pass through the heart.

You don't have to worry too much about your electricity safety. Thousands of electrical engineers study, think and study diligently every day to ensure everyone's safety. Take ordinary houses for example, there are at least three lines of defense to protect everyone from the danger of electric shock.

1, insulation is to prevent the charged body from contacting, which can be achieved by insulating the charged body, or insulating the staff, or isolating the charged body from the staff, but the insulation may fail. 2. Screen protection is to isolate the charged body from the outside world with barriers, fences, fences, shields, boxes, etc. 3. Obstacle is to set obstacles to prevent touching or approaching the charged body unintentionally, but it cannot prevent the behavior of bypassing obstacles and touching the charged body. 4. The distance is to keep a safe distance between the charged body and the ground, other charged bodies, other equipment and the human body to prevent the human body from contacting or approaching the charged body. 5. The leakage protection device adopts some highly sensitive and fast-acting protection devices. When the human body touches the charged body or the insulation is damaged and leaks, the whole circuit will be cut off within a few milliseconds to avoid serious harm to the human body. This protection is only used as an additional protection and should not be used alone. 6. safe voltage, that is, safe voltage, which uses the corresponding voltage level in the case of electric shock danger, usually does not need to take other measures to prevent electric shock when the rated voltage is lower than 24V.