The voltage levels for overhead power lines are categorized into three main classifications:

• Low Voltage (LV): Less than 1,000 Volts (1 kV). This is typically used for the final delivery of electricity to residential and small commercial customers.

• Medium Voltage (MV): Ranging from 1 kV to 69 kV. These lines are used for distributing electricity from substations to local areas and industries.

• High Voltage (HV) and Extra-High Voltage (EHV): Ranging from 69 kV up to 800 kV and beyond. These are the main transmission lines that carry large amounts of power over long distances from power plants to major substations.