Transmission voltages are classified as voltages over what level?

Transmission voltages are typically classified based on their voltage levels as they relate to the efficiency and capability of transferring electrical energy over long distances. The correct classification distinguishing transmission voltages usually starts at around 69,000 volts (69 kV). This threshold is significant because it marks the beginning of high-voltage transmission systems, which are designed to minimize energy losses during the transfer of electricity from power plants to substations and distribution networks.

High-voltage transmission systems, which typically include voltages of 69 kV and above, are crucial for moving large amounts of electricity efficiently. The infrastructure required for these higher voltages allows for lower currents, which reduces resistive losses in the conductors over long distances.

In contrast, voltages below this level, such as 10,000 volts, 25,000 volts, and even 100,000 volts, fall outside the specific classification or expand beyond the commonly accepted range for standard transmission. While 100,000 volts is certainly a high voltage, it does not correspond to the lower range of transmission voltage classification. Therefore, 69,000 volts stands as the accepted minimum for classifying voltages specifically as transmission voltages. Understanding this classification is essential for those studying electrical engineering and power distribution