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2. Electric fence - Wikipedia

   en.wikipedia.org/wiki/Electric_fence

   Detail of an electric fence material made of synthetic cord with metal interwoven through it, attached to a steel fence post with a plastic insulator. This material is more visible than wire, but most often used for temporary fencing. Electric fences are designed to complete an electrical circuit when touched by an animal.

3. Substation - Wikipedia

   en.wikipedia.org/wiki/Substation

   Substation fences, typically at least 2 metres (6 ft 7 in) in height, both protect the public from electrical hazards and also protect the substation from vandalism. [31] Internal fences can also be incorporated to protect employees from areas that are unsafe when energized. [32]

4. Bill Gallagher (inventor) - Wikipedia

   en.wikipedia.org/wiki/Bill_Gallagher_(inventor)

   In 1940, he had moved his family to Hamilton East where he continued to manufacture his electric fence. Shortly afterwards, he, his other brother Vivian, and a friend began working in Wellington, making electric fences and gas producers for use with vehicles. [1] During this time, he invented a filter for a gas producer. [3]

5. BS 7671 - Wikipedia

   en.wikipedia.org/wiki/BS_7671

   electric fences covered by BS EN 60335-2-76 the DC side of cathodic protection systems complying with the relevant part(s) of BS EN ISO 12696, BS EN 12954, BS EN ISO 13174, BS EN 13636 and BS EN 14505.

6. Knob-and-tube wiring - Wikipedia

   en.wikipedia.org/wiki/Knob-and-tube_wiring

   Over the K&T era multiple wire types evolved. Early wiring was insulated with cotton cloth and soft rubber, while later wiring was much more robust. Although the actual wire covering may have degraded over the decades, the porcelain standoffs have a nearly unlimited lifespan and will keep any bare wires safely insulated.

7. Synthetic fence - Wikipedia

   en.wikipedia.org/wiki/Synthetic_fence

   A horse behind a vinyl fence of flexible "rail" and coated wire. A synthetic fence, plastic fence or (when made of vinyl) vinyl or PVC fence is a fence made using synthetic plastics, such as vinyl , polypropylene, [1] nylon, [2] polythene (polyethylene) ASA, or from various recycled plastics. Composites of two or more plastics can also be used ...