Abstract: A cabled lead comprising a first conductor cable having outer strands and a core strand is described. Each of the outer strands and core strand has outer wires that surround a core wire. The outer wires are made of a first material. The core wires have a tube, which may be in the form of a layer, and a core, and the core is disposed in the tube. The tube is made of the first material and the core is made of a second material. The first conductor cable is positioned in a first conductor sheath. The cabled lead has a second conductor cable which may be substantially structurally identical to the first conductor cable and is positioned in a second conductor sheath. The first and second conductor cables are helically coiled to form the cabled lead. In other embodiments, there may be one or more than two conductor cables.