While the terms are often used interchangeably by the general public, in the electric power industry, a transmission line is a specific type of power line. The term power line is a broad category that includes all lines that carry electricity, from the generating station all the way to a customer's home.

The key distinction lies in function, voltage, and location:

• transmission lines: These are the "highways" of the electrical grid. They are designed for the bulk movement of electricity at very high voltages (typically 115 kV and up) over long distances, such as from a power plant to a substation. They are often supported by tall, imposing steel towers and are uninsulated, relying on air for safety clearance. Our company supplies the specialized tools and equipment needed to string and maintain these high-strength conductors.

• Distribution Lines: These are the "local roads" of the grid. They carry electricity at lower voltages (typically below 69 kV) from substations to individual communities, businesses, and homes. They are usually supported by shorter wooden or concrete poles and are often insulated because they are closer to the ground and public areas.

In summary, a transmission line is a power line, but not all power lines are transmission lines. Power lines also include distribution lines and sub-transmission lines.