The safe current that the human body can withstand is 10 milliamperes.
The safe current that the human body can tolerate depends on several factors, including the strength, duration, and path of the current. In general, the human body's ability to tolerate current is limited, and high-intensity currents can cause serious injury or even be fatal.
According to the International Electrotechnical Commission (IEC), under normal circumstances, the human body's electric shock current should be limited to less than 10 milliamperes (mA) for alternating current and less than 30 milliamperes (mA) for direct current. This is to ensure that the impact of the current on the human body in the safe range, to avoid electric shock injury.
However, it is important to note that the body's ability to tolerate electric current is individualized; some people may be more sensitive to electric current, while others may be relatively tolerant. In addition, the path of the current through the body can also have an impact on the extent of the injury, for example, the passage of current through the heart or other vital organs may result in more serious consequences.
It is important that direct contact with electrical currents, especially high voltage or high intensity currents, should be avoided as much as possible. Proper use of electrical equipment, installation of grounding protection and attention to electrical safety are key measures to reduce the risk of electric shock. In the event of an electric shock, cut off the power supply immediately and seek medical assistance.
In short, the human body's ability to tolerate electric current is limited, and the upper limit of safe electric current should be limited to less than 10 milliamps of alternating current (AC) and less than 30 milliamps of direct current (DC). Continuous attention to electrical safety and the correct use of electrical equipment are important measures to protect the human body from electrical currents.
The following are some precautions related to electrical safety:
1. Avoid touching exposed wires or electrical equipment, especially with wet hands or wet feet. Make sure you use dry hands to operate electrical equipment.
2. Do not use electrical equipment in water or wet environments to prevent electrocution. For example, do not use electrical equipment in restrooms, bathrooms or kitchens where wet conditions usually exist.
3. Regularly check the power cords, plugs, switches and other parts of electrical equipment for damage or wear. If damage is found, replace or repair them promptly to avoid electrical problems.
4, pay attention to the use of power outlets. Do not overload the outlet and make sure the cord plug is fully inserted into the outlet. Avoid excessive force when unplugging the power plug to prevent damage to the cord.
5. For electrical devices that require high power (such as heaters and hairdryers), try not to use extension cords or multiple sockets. Too many plugs connected to the same socket may lead to overloading, increasing the risk of fire and electric shock.
6. When it is necessary to clean or repair electrical equipment, disconnect the power supply first. Do not perform any maintenance or cleaning work while the electrical equipment is in operation.
7. Install an earth protection device to ensure that there is a proper circuit for the current and to prevent the risk of electric shock.
Overall, maintaining a focus and vigilance on electrical safety, using and maintaining electrical equipment correctly, and following standard operating procedures and safety guidelines are important measures to protect individuals and others from electrical injuries. Consult a professional electrical engineer if you are unsure of any electrical issues or safety measures.