Death will result if timely rescue is not given within 3 to 4 minutes after being electrocuted by 220v voltage.
The greater the current intensity, the greater the fatal danger; the longer the duration, the greater the possibility of death. The minimum current value that can cause people to feel is called the perceived current, which is 1mA for AC and 5mA for DC. The maximum current that a person can get rid of after being shocked is called the escape current, which is 10mA for AC and 50mA for DC.
A current that is life-threatening in a short period of time is called a fatal current. For example, a current of 100mA passing through the human body for 1 second can be enough to kill a person, so the fatal current is 50mA. In the case where there is a protective device to prevent electric shock, the current allowed to pass through the human body can generally be considered as 30mA. Extended information
Methods to save someone after an electric shock:
1. First, pull off the power switch or unplug the power plug as soon as possible. Do not pull the body of the person who received an electric shock with your hands.
2. Dry bamboo poles, poles, and wooden sticks can be used on the spot to remove wires or electrical appliances from the person who gets an electric shock. Iron tools or wet sticks must not be used to prevent electric shock.
3. You can stand on a dry wooden board or wear rubber-soled shoes without nails, and use one hand (never use both hands at the same time) to pull the dry clothes of the person who received an electric shock. The person who gets an electric shock is disconnected from the power source.
4. If the person who gets an electric shock stops breathing and heartbeat, in addition to calling 120 emergency number, external chest heart compression, artificial respiration and other methods should be used for first aid.
Baidu Encyclopedia-Safety Voltage
Baidu Encyclopedia-Human Electric Shock