Electric fence kept insulated from the earth and from any materials that will conduct electricity and ignite or short out the fence. Fencing must therefore avoid vegetation, and cannot be attached directly to wood or metal posts. Typically, wooden or metal posts are driven into the ground and plastic or porcelain insulators are attached to them, or plastic posts are used. The conducting material is then attached to the posts. Electrified palisade fences are usually made from painted mild steel, galvanized steel, stainless steel or aluminium. Typically the fences are . The palisade fence is mechanically stronger than a typical steel cable
Sydney Cove railings ferry wharf. Since : Constant replacement of damaged sections of railings. Further research should be undertaken regarding the dates of introduction of the two types of fencing, and of the location of the original sections of fence. As at 31 March 2011, the Sydney Cover railings and site are of State heritage significance for their historical and scientific cultural values. The site and building are also of State heritage significance for their contribution to The Rocks area which is of State Heritage significance in its own right. The railings have historic significance as part of the urban improvements undertaken at