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
Picket fence affixed vertically to the rails. These boards with pointed tops are called "pickets" for their resemblance to the pointed stakes historically used by infantry to repel cavalry. Picket fences can be made of several types of materials. Historically, wood has been the most popular material used for picket fences. This wood can be untreated, treated, or naturally insect and rot resistant. Other non-wood options are available; including vinyl, aluminum, and PVC. The first step in installing a picket fence is to insert the posts into the ground. Traditionally this is done by digging deep holes (usually 36in x 12in) either