IEC 62420 pdf download Concentric lay stranded overhead electrical conductors containing one or more gap(s) The surface of the conductor shall be free from all imperfections visible to the unaided eye (normal corrective lenses accepted), such as nicks, indentations, etc., not consistent with good commercial practice. 5.4 Stranding 5.4.1 General All wires of the conductor shall be concentrically stranded. Before...