General Catalogue

FENCE DESIGN & TIPS

Energiser Terminology

Volts : This is the pressure behind the flow of electricity to push the energy along the conductive fence wire. (similar to air pressure). Most energisers produce up to 10,000 volts and about 3,000 volts minimum (measured by a volt meter, FEN05075 & FEN00015 Ohms: This is the measure of resistance, rather like friction of water running along a hosepipe. Small diameter fence conductors, such as those in polywire and tape have high resistance and are used for short fences. Large diameter wire such as 2.5mm high tensile have low resistance and can be many kilometres long. Vegetation growth on a fence line acts like a leak in a water pipe and “shorts” the fence to earth thus reducing its effectiveness. Joules: This is the amount of energy available to be pushed down the conductor by the energiser, and is the measure of shock felt by the animal. This is rather like cubic capacity or volume. Higher joules means longer fences. Stored energy give the best indication of the energiser’s ability to handle fence load and maintain an effective shock. Stored energy is used to compare one model to another. Reasons for this are, it is independent of external fence load conditions and is more consistent than output energy, which changes according to standard specifica - tions. We have various models in our mains range start- ing from FEN00374 up to our most powerful mains unit FEN00336 which are manufactured in accordance with the new European Safety Standard. EN60335. Amperage: The measurement of electric current. This is what you feel when you get shocked. The higher the amperage the more intense shock the animal will feel.

Recommended Voltage On Fence Line

Animal

Recommondations

Use high visibility products such as polytape or poly rope

Horses

3,000 volts

If docile with plenty pasture, 1-3 strands is adequate

Cattle

3,000 volts

Extra shock needed to control a determined bull, 4 strands recommended Difficult to confine, (goats jump, thick coats require higher voltage), 4-6 strands Smaller animals need closer wire spacing

Bulls

4,000 volts

3,000-5,000 volts

Sheep/Goats

Nuisance pests & Vermin

3,000 volts

To deter from rooting, use 304 wires starting 15cm from ground

Pigs

3,000 volts

Foxes/ Predators

4,000 -5,000 volts

Multi-wires spaced 13-20cm apart from ground level

3,000 - 4,000 volts

Multi-wire fence 1.8 - 2.5m high using high visibility tape or rope

Deer

3-4 wires, starting 15cm from ground

Pets

3,000 volts

Earthing In order for the fence to work correctly it is necessary to make an adequate Earth. The shock circuit is then completed when an animal comes into contact with the fence. If an insufficient earth is used then the whole system becomes inefficient or ineffective. You will only get the full potential from your energiser if it is correctly earthed. Depending on the energiser, we suggest you use a minimum one meter FEN00007 galvanised earth rod. In dry ground conditions the current flows less easily than in wet conditions and may require the use of additional earth rods. Additional earth bars should be spaced two metres apart and joined with lead out cable.

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