A terminal-equipped electric wire includes a terminal and a coated conductive wire, which are electrically connected to each other. A crimp part of the terminal is crimped to the coated conductive wire, and has a conductive wire crimp part, which is crimped to a conductive wire that is exposed from a coating on the front-end side of the coated conductive wire, and a coating crimp part, which is crimped to the coating of the coated conductive wire. On the front-end side (terminal body side) of the conductive wire crimp part, an electric wire holding part, which applies a relatively strong holding force on the conductive wire, is provided, On the rear-end side (coating crimp part side) of the conductive wire crimp part, a conductive part for achieving conduction with the conductive wire is formed.

A submarine DC power cable including: three stranded cores, wherein a first core and a second core of the three cores are DC power cores, each including a conductor, and an insulation system arranged around the conductor, and wherein a third core of the three cores is a dummy element having the same outer diameter as the first and the second cores, or the outer diameter of the third core deviates at most 10% from the outer diameter of any of the first and the second cores, and wherein the third core in cross-section has a structure that is circular symmetric and which differs from a cross-sectional structure of the first and the second cores.