A high-power low-resistance electromechanical cable constructed of a conductor core comprising a plurality of conductors surrounded by an outer insulating jacket. Each conductor has a center conductor element surrounded by a plurality of copper wires, wherein the plurality of copper wires is compacted to have a non-circular cross-section. The center conducting element may be one of a fiber optic strand, a copper wire having an indented outer surface, or a twisted conductor pair. Each conductor also includes a conductor insulating jacket encapsulating the plurality of copper wires and center conducting element. A first armoring layer of a plurality of strength members is wrapped around the outer insulating jacket. A second armoring layer of a plurality of strength members may also be wrapped around the first layer. A polymer jacket layer may encapsulate the first and/or second armoring layers of strength members.