MrStuart
Some recent changes in this area have messed up the 66kv KTS-SBY1 power line (Keilor Terminal Station to Sunbury Zone Sub) .   It looks like an existing 22kv power line has been added along the Old Calder highway and it has unintentionally become part of the KTS-SBY1 Relation.   Also the KTS-SBY1 section from this point back to the Keilor Terminal Station has been incorrectly tagged back to power=minor_line.  This should be power=line for the KTS-SBY1 66kv.

