The Physics Factbook™
Edited by Glenn Elert -- Written by his students
An educational, Fair Use website
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|Bibliographic Entry||Result |
|Solar-Powered Electric Fence Controller. Red Snap'r Products.||[see tables below]||688–6400 V|
|Electric Fence Catalog (page 5). Southwest Power Fence & Livestock Equipment.||"Power Rating - One Joule - Up to 7.5 kV. Powers 5-10 Miles of Wire. Suitable for farms 5 to 25 acres. Modular for easy servicing."||7500 V|
|Burleson, Wayne. Electric Fencing: An inexpensive solution to improve the bottom line. Pasture Management.||"The next time your animals get in a fight with the neighbor's bull and tear down a fence line, remember that most educated livestock will not touch a wire, the second time, with 5,000 volts running through it."||5000 V|
|Jurassic Park. Universal Pictures -- Amblin Entertainment, 1993.||[An electric fence is shown various times through out the movie and the sign on the fence reads …] "Warning: 10,000 volts"||10,000 V|
|Electric Fence voltage Distance Joules. Sureguard Fencing. 1998-2000.||"Sureguard energizers have a peak output voltage of 10,000 volts"||10,000 V|
|"If you compared an energizer putting 2000 volts on the fence wire with one putting 10,000 volts, that's a voltage difference of five times but a charge difference of 25 times!"||2,000–10,000 V|
|"If the hide on your animal is 1 mm thick then you need a fence voltage of at least 2,000 volts to overcome this insulating layer; otherwise the animal will not feel anything."||2000 V|
|"At the maximum distance the fence voltage will be about 2,500 volts. On shorter fences the voltage will approach a max 10,000 volts"||2,500–10,000 V|
Having problems keeping livestock out of pasture or ranch? An electricfence maybe the solution. Electric fences are an inexpensive way to keep animalsout of an area for good. Upon contact with the fencing, animals will be shocked,remember the shock and know not to trespass anymore.
The voltage of an electric fence should vary from about 2000 to about10,000 volts. A 10,000 volt output is the maximum voltage allowedby international regulations. The voltage that is used depends on the desiredpower of the shock and the distance on the fence that can be shocked up to. Fora longer shocking distance range, a lower voltage would be used. Howeverfor a greater shock, a higher voltage would be used. With these higher voltages,sparks can travel greater distances into the animal. For every 1 mm of hideyour animal has, 2000 volts must be used to overcome this layer otherwise,the animal will not feel a thing. For all operating purposes, a higher voltagefence will give you the best results when it comes to prohibiting livestock froma specific area.
When giving an animal a shock, the animal becomes a part of the circuit sothat the shock can flow throughout the animal. The electricity will pass fromthe wire, through the animal, out from their feet, into the ground and back throughground rods. Wet and Soft soil is desirable because electricity flows better throughthis kind of soil.
Electric fences are an efficient, practical, inexpensive way to protect yourland. Animals will think twice about where they walk when they realize your fencehas 10,000 volts of electricity trough it. You will literally "knocktheir socks off"!
Nicole Castellano -- 2001
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