High voltage learning during the Christchurch earthquakes

On December 4 I observed the laying of the first part of the strengthening of the Christchurch distribution network by the 'pull' and lay of the first 900 metre section of 66kV by the Connetics underground department. Contractors dug the trench and laid the concrete bedding for the power cables over the last couple of months. My previous post illustrates the map and location of the first joint hole, 900m from the McFadden Zone substation. Having not witnessed the laying of a really heavy power cable before, this was a particularly exciting time for me. Rollers were laid in the trenches and on the corners with cable layers at intervals to assist the passage of the cable. Conduit was installed in sections and guides inserted into the entries of the conduit. Rollers with the nylon pulling cable in place for the first cable. Corner rollers with conduit protective entry A nylon cable was used to pull the cable and was attached using a cable puller and drawn by a tor