What is the range of underground distribution voltages?

The correct range of underground distribution voltages is from 2.4 kV to 35 kV. This range is commonly used in electrical engineering and utility applications for underground power distribution systems, which are designed to safely and efficiently transmit electricity over medium distances without the exposure to environmental factors that above-ground lines face.

Options that fall outside this range either do not align with standard practices in underground distribution or suggest voltages that are not typically used for such applications. For instance, voltages below 2.4 kV are generally considered low voltage and often used in residential or lower capacity applications, while values exceeding 35 kV push into high-voltage transmission territory, which is not typical for distribution purposes but rather for transmission networks that cover long distances. Thus, the range of 2.4 kV to 35 kV is appropriate as it captures the middle ground necessary for effective underground distribution of electrical power.