Electric Fencing

Electric Fencing Motiontech Security

Electric Fencing

An electric fence is a FIRST LINE OF DEFENSE barrier that uses electric shocks to deter animals or people from crossing a boundary. The voltage of the shock may have effects ranging from uncomfortable, to painful or even lethal. Electric fences are designed to create an electrical circuit when touched by a person or animal.

A component called an energizer converts power into a brief high voltage pulse. One terminal of the energizer releases an electrical pulse along a connected bare wire bout once per second. Another terminal is connected to a metal rod implanted in the earth, called a ground or earth rod. A person or animal touching both the wire and the earth during a pulse will complete an electrical circuit and will conduct the pulse, causing an uncomfortable electric shock.

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The effects of the shock depend upon the voltage, the energy of the pulse, the degree of contact between the recipient and the fence and ground and the route of the current through the body; it can range from barely noticeable to uncomfortable, painful or for some fences even lethal. The quality of installation is a major contributing factor in determining the effectiveness of the electric fence.

In South Africa the Electric Machinery Regulations (Government Notice No. R250 (Government Gazette 34154) of 25 March 2011, published in terms of the Occupational Health and Safety Act, 1993 (Act No. 85 of 1993) (OHS Act), which is administered by the Chief Inspector of Occupational
Health and Safety of the Department of Labour require that all electric fence installations (nonlethal), temporary or permanent, comply with the requirements of SANS 10222-3. It also requires that an accredited person, defined as an electric fence installer, issues an Electric Fence Certificate for an electric fence installation (non-lethal), and that the certificate is in the form of the Electric Fence Certificate published in the Electrical Machinery Regulations or in the form published in this standard as an example. The provisions of SANS 10222-3 apply only to the selection, application and installation of electric fencing equipment, associated appliances and accessories, which are part of the electric fence installation (non-lethal), temporary or permanent. This standard does not apply to systems with voltages below 50 V. d.c. or 35 V a.c. or, to the construction and safety of the equipment associated appliances and accessories. The provisions of SANS 10222-3 are concerned with ensuring the basic safety of electric fence installations (non-lethal) and decreasing the likelihood of electromagnetic interference on communication systems. To ensure the protection of people, animals and property and the proper functioning of installation, the designer of an electric fence installation should be aware of:
– the characteristics of the electric fence equipment, associated appliances and accessories; and
– the operating environment of each part of the electric fence installation.

Wall top Fences, Estate fences, Game farm fences, Full fences…


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