What voltage level is considered high voltage?

High voltage is typically defined within the context of electrical systems where safety, insulation, and operational guidelines are significantly different from those in low and medium voltage systems. In general terms, high voltage refers to any voltage level above 1,000 volts for alternating current (AC) and above 1,500 volts for direct current (DC).

In this scenario, 600 VAC fits within the upper range of standard electrical systems but is still considered medium voltage rather than high voltage. Common high voltage levels in industrial or utility applications start from 1,200 VAC onwards, making it vital to differentiate between these voltage categories for safety and operational reliability.

While 2500 VAC is clearly high voltage as it exceeds the threshold, the focus here is on the high voltage classification, which 1200 VAC meets, particularly when considering the broader definitions used in power distribution and transmission standards. Therefore, 1200 VAC is understood as a high voltage in most regulatory frameworks.

While 600 VAC is crucial for many applications, it does not reach the high voltage classification typically used in electrical engineering standards. This delineation is critical for understanding the requirements for insulation, safety practices, and the types of equipment designed to handle high voltage levels.