Why should primary distribution cables be kept short at a bare base?

The correct choice highlights the importance of minimizing voltage drop in electrical systems. Short primary distribution cables help ensure that the voltage delivered to the secondary distribution center remains close to the intended level. This is crucial because longer cables can introduce resistance, leading to a drop in voltage as electricity travels through the conductors.

In distribution systems, maintaining adequate voltage levels is essential for the proper functioning of equipment and devices that rely on consistent electrical supply. If the voltage drops too low, it can lead to inefficient operation, performance issues, or even damage to the equipment connected downstream. Therefore, keeping primary distribution cables short minimizes this risk by reducing the length of the path the electrical current must travel, thus maintaining voltage levels and improving overall system reliability.

Other choices, although seemingly relevant, do not directly address the primary concern. For example, keeping amperage low or providing resistance is not the primary reason for the length of the cables, and ensuring enough cable for connections is only a matter of practicality, not efficiency in voltage management.