SPECIFIC DESIGN SOLUTIONS

Typical wiring hookup and installation

(click on picture for expanded view)

This describes a 4 wire/strand extension above a standard concrete wall. The bottom strand is stretched about 3 inches (7.5 cm) above the cement wall. The other strands have approximate 6 inches (15 cm) spacing from each other. In this design, the top strand is a grounded to provide a measure of "false alarm" protection from falling foliage. 

All strands are mounted on insulators so the grounded wires cannot be distinguished from the high voltage charged wires.

   In this installation, the grounded strands are connected together in a standard common parallel fashion. This common ground includes three (3) 8 foot ground rods driven at least 7 feet into the earth/ground. . An absolute minimum of 2 grounds are always recommended to provide a good ground over the length of your fence. Also connected to this common ground are the output ground terminals of the fence charger 220/110VAC to 12VDC and the voltage monitor. 

   NOTE: One must be careful to use a battery charger that can be connected to the continuously connected to the battery without doing overcharging and damaging the battery.

   The high voltage strand is connected at the charger in such a manner that the high voltage can only travel in one direction. This bottom high voltage strand is then splice/connected to the next upper high voltage wire at the far end end of the fence installation, and the voltage is looped and travels back to the far left which is the other end of the fence installation, and then connected to the lower high voltage strand and back to the start for a connection with the high voltage monitor. 

   This type of loop connection of the high voltage strands insure that if the high voltage is cut or shorted or lost in any manner, the high voltage monitor will provide an alarm. A more sophisticated high voltage monitor will give a separate alarm when grass, weeds, or brush partially provide a path for the high voltage and its time to maintain your and clear your fence.

   So the voltage leaves the fence charger; travels around the fence; connects to the next strand and travels all the way back to the far end of the installation; and then back to the beginning. It DOESN'T, however, connect back to the charger, but instead, connects to the voltage monitor, as shown. This makes the high voltage a single loop originating from the charger and traveling around and back to the voltage monitor. 

   The monitor senses the voltage and if the voltage is cut or shorted, then the contacts in the monitor close and sounds whatever alarm is connected to it. It is a good idea to power the monitor and alarm siren to a separate battery or 12VDC power source. It is also a good idea (but not necessary) to connect the monitor to a separate "earth ground" network.

   This is the most common installation, and this and variations of this design account for probably 80% of all installations. 
 

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Beachfront Installation
designed NOT to impede the view

   We were faced with the problem of intruders on a beach front property where there were constant intrusions from the beach side of the property. The people did not want to close off their view of the ocean, but needed the protection.

(click on picture for expanded view)

This is a seven (7) strand extension over a 3 foot concrete sea wall. The concrete portion is not high enough to obstruct the view of the ocean, but high enough to keep the beach from encroaching into the inner yard. 

The concrete also keeps intruders from burrowing or digging under the fence. The concrete portion also keeps most foliage from growing and shorting out the high voltage. 

As required, there are an even number of high voltage strands so the high voltage can be looped and made into a circuit where a single cut or short will register on the voltage monitor.  All strands/wires are insulated for that "lethal look" and are spaced approximately 6 inches (15 cm) apart. The bottom high voltage strand is stretched at 3 inches (7.5 cm) above the concrete wall.

This style of installation is very successful in eliminating traffic onto private property from the beach or water and is hardly visible when viewing the ocean or the beach.
 

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Extreme High Security Installation
Addition to Chain-Link Fence

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This is a complete separate fence addition to a chain-link fence. The chain-link fence, even with barbed wire at the top is easily climbed. The intruder can easily cut the wire links comprising the chain link fence if climbing is not feasible, especially to carry away large stolen items like AC units, TV's, and even refrigerators, that would be hard to take over the top of the fence. 

This type of installation usually consists of 15 to 20 strands of electric fence. The electric fence support poles are usually tied to the supporting posts of the chain-link fence. A concrete footer or base is highly recommended so keep intruders from digging under the fence proper. This little concrete footer also keeps grass and weeds from growing and shorting the lower "high voltage" strands.

The wiring is done the same as the other installations. The number of "high voltage" strands has to be an even number to allow looping of the "high voltage" circuit for effective "high voltage" monitoring. 
 

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Securing a Building
 When the roof has 
easy access from the ground.

(click on picture for expanded view)

Electric fences are designed to create an electrical network when touched by a person or animal. A component called a power energizer converts power into a brief high-voltage pulse. One terminal of the power energizer releases the electrical pulse along a connected bare wire about once per second. Another terminal is connected to a metal rod implanted in the earth, called a ground rod. 
 

A person or animal (which is mostly water and thus quite conductive) touching the wire and the earth/wall simultaneously will complete an electrical circuit and will conduct the pulse, causing an extremely painful electric shock. The effects of the electrical shock depend upon the voltage and electrical current used, and can range from barely noticeable, to painful, to lethal.

This type of arrangement will secure any wall from climbers. The top strand is above the top of the roof or wall so that a ladder, or length of bamboo will conduct the high voltage pulse and will either shock the climber or sound the alarm through the monitor or both.
 

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Installation with a Corner Connection

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