Twin-Core power cord suspends a fully-annealed (dead soft) 12awg 99.999% PURE SILVER solid-core conductor within a double-shielded air/teflon tube, and a dead-soft 14awg pure copper enameled solid core conductor in a separate double-shielded air/teflon tube. Each line is individually jacketed, and then these are twisted together by hand. The shields are continuously conductive with the ground-plane, and sum to 9awg!