Physical description

Sample of trolley wire taken from overhead (South Trolley) at ear 10, which has been heavily distorted, with metal flow under ear, and abrasion marks possibly due to trolley pole "bounce". Grooving of wire varies with position of ear etc. Shows where 6 screw ear was located. Has cut marks at either end. See Reg. item 514 for details of wire size. See sketch for cross-sections and colours on original worksheet.



Images added 3-12-2016