The main difference between DC cable and AC cable is the type of current they carry. DC cables transmit direct current—a constant, unidirectional flow—while AC cables carry alternating current that reverses direction at 50 or 60 Hz. Because DC has no skin effect and no capacitive charging current, DC cables (especially HVDC) are preferred for long-distance and submarine transmission; AC cables remain the standard for utility grids, buildings, and industrial distribution.
DC and AC cable is an essential part of any electrical system, providing the means for transmitting electrical energy from one point to another. In this article, we will explore the differences between DC and AC cables, their properties, and their applications.