CXS Copper Mechanical Lugs Panduit CXS Copper Mechanical Lugs are designed of high-strength electrolytic copper with a wide wire range-taking capability. The lugs feature a uniform clamping force from an internal pressure bar and a V-bottom collar and also a durable electrical contract between the conductor and connector, which minimizes inventory requirements. Panduit CXS Copper Mechanical Lugs have a single-barrel type and offer a 600V maximum voltage.