What does the term “primary line” refer to in electrical distribution?

The term “primary line” specifically refers to high voltage lines that are used in the electrical distribution system, connecting substations to transformers. These lines carry electricity at higher voltages, which is essential for efficient long-distance transmission of power. By operating at higher voltages, the primary lines minimize energy loss due to resistance in the conductors. Once the electricity reaches a transformer, it is subsequently stepped down to a lower voltage suitable for distribution to homes and businesses.

The distinction is important as low voltage lines, which deliver electricity to individual properties, are not classified as primary lines. The infrastructure in question focuses on the high voltage segment that plays a critical role in the overall distribution framework, ensuring that power generated at plants can efficiently reach local areas before being transformed into usable voltage levels for end users.