A High-Voltage Cable Cross-Section (IMAGE) Chalmers University of Technology Caption A high-voltage cable cross-section is depicted. The electrically conductive core is covered by a black protective layer, a white insulation layer of plastic and an additional black protective layer. Credit Carolina Eek Jaworski Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.