Electricity is a powerful force that can be useful in certain situations, but it can also be incredibly dangerous if not handled properly. Knowing the difference between safe and unsafe levels of voltage is critical for electrical safety. Understanding what levels of voltage are considered lethal can help you keep yourself, your family, and your property safe. The National Fire Protection Association (NFPA) has established standards for electrical safety that specify the maximum amount of voltage that is considered safe. Generally, any voltage above 30 volts is considered dangerous and potentially lethal. Any voltage that is greater than 600 volts is considered extremely dangerous and potentially fatal. The amount of current (amps) that is flowing through the circuit also plays a role in determining how dangerous it is. Generally, any current greater than 5 milliamps (mA) can cause a shock, while anything above 100 mA can cause a fatal shock. However, the severity of the shock will also depend on the duration of the contact and the path of the current through the body. In addition to voltage and current, the resistance of the body also plays a role in determining the severity of an electric shock. Generally, the less resistance the body has, the more dangerous the shock.
This is why it is especially important to avoid contact with wet surfaces or metal objects, as these materials have less resistance to electricity. It is also important to realize that voltage does not always cause a lethal shock. Many people are able to survive electrical shocks from high voltage sources if they are wearing proper clothing and safety equipment. However, it is still important to exercise extreme caution when working with electricity and to always follow safety protocols to minimize the risk of injury. In conclusion, it is important to be aware of the dangers of electricity and to understand what levels of voltage are considered lethal. While some people are able to survive high voltage shocks, it is still important to take the proper precautions when working with electricity. By understanding the risks and taking the necessary safety measures, you can help to ensure electrical safety and avoid potentially fatal accidents.