Lineman's Test C Practice

High-voltage lines used to move large amounts of power over long distances belong to the transmission side of the power grid. In regional grids, 230 kV is a typical transmission-level voltage, designed to carry bulk power between substations and regions, reducing losses over distance. Distribution systems operate at much lower voltages and deliver electricity to individual customers, not bulk interconnections. Industrial customer systems are on-site or facility-specific networks, and generation systems refer to the power sources themselves rather than the delivery lines. So, 230 kV lines in regional grids are classified as transmission systems.