Overhead power lines are classified into several voltage levels to efficiently transport electricity from power plants to consumers. The most common classifications are:

• Low Voltage (LV): Up to 1 kV (1,000 V), typically used for local distribution to homes and businesses.

• Medium Voltage (MV): Between 1 kV and 69 kV, used for distributing power from substations to smaller communities or industrial areas.

• High Voltage (HV): Between 69 kV and 345 kV, used for long-distance transmission from power plants to substations.

• Extra-High Voltage (EHV) & Ultra-High Voltage (UHV): Above 345 kV, used for transmitting bulk power over very long distances across regions.