NATIONAL GRID SUBDIVISION CORRIDOR
means the area measured either side of the centre line of any above ground National Grid transmission lines as follows: 14m of a 110kV transmission cable, or a 110kV transmission line on single poles; 16m of a 110kV transmission line on pi poles; 16m of the Te Hikowhenua - Deviation A (THW-DEV-A) transmission line on towers and Pi poles; 18m of the South Makara - Oteranga Bay A (SMK-OTB-A) 11kV transmission line on Single Poles; 32m of a transmission line up to and including 110kV, on towers; 37m of a 220kV transmission line; 39m of a 350kV National Grid transmission lines on towers. The measurement at setback distances from National Grid transmission lines shall be undertaken from the centre line of the National Grid transmission line and the outer edge of any support structure. The centre line at any point is a straight line between the centre points of the two support structures at each end of the span. Note: the National Grid Corridor does not apply to underground cables or any transmission lines (or sections of line) that are designated.