For the lower values of current, round conductors would be convenient to use.

For electrical systems, the shape and size of conductors are chosen based on several factors, including the current they will carry, the method of insulation, and how they will be installed (e.g., in conduits, underground, or overhead). Round conductors are indeed very commonly used, especially for lower values of current. Here are the reasons why round conductors are convenient:

1. Manufacturing Ease: Round conductors are easier to manufacture with consistency and precision. The process of drawing the conductor material through dies to achieve the desired diameter is well-established and efficient, making round conductors readily available and cost-effective.

2. Flexibility: Round conductors are more flexible compared to other shapes, making them easier to handle and install, especially in applications that require the cables to be bent or routed through tight spaces.

3. Insulation and Sheathing: Applying insulation and protective sheathing is more straightforward for round conductors. The uniform shape allows for even coverage of insulation material, which is important for the conductor’s electrical characteristics and safety.

4. Minimized Skin Effect for AC Currents: While the skin effect (where AC currents tend to flow near the surface of the conductor, effectively reducing the conductor’s cross-sectional area available for current flow) is more pronounced at higher frequencies and current levels, round conductors naturally facilitate a uniform distribution of current across their cross-section at lower frequencies and current levels. This makes them efficient for a broad range of applications without needing to consider