Answer: Power lines are generally categorized by their voltage levels and function within the electrical grid:

• transmission lines: These are the largest power lines, operating at the highest voltages (typically 115 kV to 765 kV and even higher) to efficiently transport bulk power over long distances.

• Sub-transmission lines: These are the intermediate lines that branch off from major transmission lines, carrying power at medium to high voltages (typically 46 kV to 138 kV) to local substations.

• Distribution Lines: These are the smaller lines you commonly see in residential areas. They carry power at lower voltages (typically below 35 kV) from substations to the final customers.

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