What is the distinguishing feature of Type MV cable?

Type MV (Medium Voltage) cable is primarily characterized by its metal sheathing, which offers enhanced protection against environmental factors and mechanical damage. This metal sheathing also provides a grounding means, which is essential for safety and helps in reducing electromagnetic interference. The presence of metal sheathing is a significant differentiator from other types of cables that may use non-metallic sheathing.

The incorrect options revolve around characteristics that do not specifically define Type MV cable. It does not have a lower voltage rating; rather, it is designed for medium voltage applications typically ranging from 2,001 to 35,000 volts. Flexibility can vary between cables, but the defining feature of Type MV cable is not its flexibility. Lastly, while Type MV cables can be used for underground installations, they are not exclusively limited to that use; they can also be installed in above-ground applications as long as they adhere to applicable codes and standards.