Why is bundling conductors done in electrical systems?

Bundling conductors in electrical systems is primarily done to enhance current carrying capacity and reduce corona loss. When conductors are bundled together, they can share the thermal load more effectively, which can allow for a higher overall current capacity compared to individual conductors spaced apart. This is particularly important in high-voltage transmission systems where efficiency and loss minimization are crucial.

Additionally, when conductors are close together, the electric field surrounding them is modified, which can help reduce the corona effect. The corona effect is a phenomenon that can lead to the ionization of air around the conductors when the electric field strength exceeds a certain threshold, causing energy losses in the form of electrical discharges. By bundling the conductors, the electric field is distributed more evenly, minimizing the potential for corona discharge.

This practice is beneficial not only for improving the performance of electrical systems but also contributes to the longevity and reliability of the infrastructure by reducing unwanted losses and enhancing overall efficiency. Consequently, the option highlighting this aspect is the most accurate representation of the reasons for bundling conductors.