At what current level does ventricular fibrillation occur in AC systems?

Ventricular fibrillation is a critical and potentially fatal condition that arises when the heart experiences chaotic electrical activity, preventing it from pumping blood effectively. In alternating current (AC) systems, research and medical studies indicate that ventricular fibrillation typically occurs at current levels ranging from 60 to 100 milliamperes (mA). This threshold represents a significant risk for individuals exposed to electrical currents within this range, as it can disrupt the normal rhythm of the heart, leading to serious outcomes.

Understanding this phenomenon is vital for those working with electrical systems, as it underscores the importance of maintaining safety standards and awareness of the risks presented by electrical shock at certain current intensities. By recognizing that ventricular fibrillation can begin to occur at levels as low as 60 mA, individuals can better appreciate the need for proper protective measures when working with AC electricity.