Compared to a single conductor, a bundle conductor significantly alters the electrical properties of a transmission line. The presence of multiple sub-conductors increases the Geometric Mean Radius (GMR) of the line. Because inductance is inversely proportional to the GMR, the inductance of the line decreases. Conversely, the increased surface area of the bundled configuration leads to a higher capacitance between the conductors and the ground. The combination of reduced inductance and increased capacitance results in a lower surge impedance and a more efficient transmission of power, particularly over long distances where these parameters are most critical.