Which type of current is generally considered more hazardous?

Alternating Current (AC) is generally considered more hazardous due to its unique characteristics that can impact human safety. AC current periodically reverses direction and its frequency can cause muscles to contract uncontrollably. This is particularly dangerous because, during an electrical shock, the body's response can lead to prolonged exposure to the current, which increases the risk of serious injury or fatality.

The varying voltage levels associated with AC can also contribute to its hazardous nature. In certain circumstances, especially with high voltages, the risks associated with AC can be greater because it can more easily travel through the body due to its ability to rapidly fluctuate, leading to greater heart and nervous system disturbances compared to other types of current.

In contrast, while Direct Current (DC) can also be dangerous—especially at high voltages—it tends to have a steady flow that can lead to a different type of shock response, often allowing a person to let go more easily. High Voltage Direct Current (HVDC) and Low Voltage Alternating Current (LVAC) also have specific usages and risks associated with them, but the general consensus in safety training identifies AC current as notably perilous due to its interaction with the human body under shock conditions.