A conductive rod, including a conductive rod body, the diameter of the conductive rod body satisfies

[00001]$\frac{{}^{2}L}{\sqrt{E}}2\left(1+\frac{{}^{2}L}{\sqrt{E}}\right),$

wherein is the diameter of the conductive rod body, and the unit thereof is mm; L is the length of the conductive rod body, and the unit thereof is mm; E is the elastic modulus of the conductive rod body, and the unit thereof is Gpa; and is 0.5 Gpa.sup.1/4.

The present invention relates to the technical field of subsea power cables. More specifically, the invention relates to a subsea power cable comprising at least one cable core, the cable core comprising a metal conductor, the metal conductor comprising at least one metal wire, wherein a section of the at least one metal wire along the longitudinal direction is surrounded with a material of low electrical conductivity.