How much current is considered to be lethal?

The value of 0.1 amps, or 100 milliamps, is often cited as the threshold above which electrical current can be lethal. This level of current is capable of causing serious injury or death, particularly when it passes through vital organs, such as the heart. At this current level, it can lead to ventricular fibrillation, a condition where the heart's electrical activity becomes chaotic and ineffective at pumping blood.

To provide context, the safety limits established by electrical safety standards highlight that currents as low as 0.1 amps can lead to potentially fatal consequences under certain conditions, especially if the person is grounded or is in a wet environment. Understanding the dangers associated with electrical currents emphasizes the importance of taking safety precautions when working with or around electrical systems.