What characteristic defines high voltage systems in electrical contexts?

High voltage systems are characterized by the increased risk of shock due to the significant electrical potential they operate under. When voltage levels are high, the potential energy in the system can cause a greater flow of current in the event of accidental contact with live components. This makes it crucial for personnel working with or around high voltage systems to adhere to strict safety protocols to mitigate the risk of electrical shock.

In contrast, while high voltage systems may present challenges related to maintenance and efficiency, the defining characteristic is indeed the heightened danger they pose concerning electrical shock hazards. Understanding this aspect is essential for anyone involved in electrical power production or maintenance, highlighting the importance of safety equipment and training when working with such systems.