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Electric Fencing Help



It can be daunting knowing where to start when looking into what sort of electric fencing you require. In this section we aim to explain some of your questions about an electric fence, it's applications, materials, installation, etc.
Electric Fencing Help

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How Does An Electric Fence Work?


An electric fence can be either battery or mains powered, converts the power into high voltage pulses. If the wire carrying the pulse is touched by an animal, the current passes through the animal to the ground, and this effect gives a shock. As the animal realises that the fence causes pain it quickly learns to stay away, and the fence becomes a physical and psychological boundary. Electric fencing is considered far safer than a lot of conventional fencing methods as the energiser emits the pulse once every 1-2 seconds and it lasts for only a fraction of a second whearas barbed wire has been known to cause injury to an animal.
How does it work

An electric fence is made up of 3 main components:
  1. An energiser which can be either mains, battery or both
  2. Conducting line which makes up the actual barrier. This can be electric nets, polytape, wire, polyrope or twine.This carries the current along the fence and is what the animal in the field will touch
  3. Good insulation of the line so the power does not leak to earth
  4. An earth stake that takes the current back to the energiser.

Choice Of Electric Fencing Energiser

This is the heart of the system! There are many models available depending on the power supply and output required, the fence length, and the type of animal to be contained or excluded.

Mains Mains Fencer / Energiser
These are best for large areas where a permanent electric fence is required. They are always the preferred choice for any electric fence where a 230v supply is nearby as you don't have to woory about batteries needing recharged. The power can be taken from a mains energiser unit to the fence and the earth stake by insulated 'Lead Out Cable' which can be buried. This is a low cost insulated steel cable which has the ability to cope with high voltages and has minimal resistance. With a mains energiser, the running costs are very low with no maintenance reqd - you just switch them on and forget about them!
Dry Battery 9v Energiser / Fencer
These are also very mobile fence energisers powered by large disposable batteries. Very popular for strip grazing and seasonal use by farmers and horse owners alike. The battery saving features on our Forcefield models allow the batteries to last longer and therefore lower running costs.
Dry

wet Wet 12v Battery Energiser / Fencer
Ideal for semi-permanent electric fences or where no mains power is available. The 12v batteries are rechargable and these are generally able to power longer fences than dry batteries. While a car battery will power an electric fence, it is always better to use a 'leisure' battery because a car battery gives out maximum power over a few days and then the power dwindles over the weeks whearas a leisure battery gives the maximum power it can over the weeks and it will go from full strength to flat in a couple of days. This is termed 'deep discharging'. The higher the Ah of the battery, the longer between recharges.
Mains & 12v Combination Energisers
These are new to us and have become very popular very quickly. They are a fairly novel concept. The unit itself will take in what ever powerit is given and with them come 2 adapter cables. One for the mains which just plugs into a socket on the wall and one with crocodile clips to clamp onto a 12v battery terminals.

This gives the ultimate in versatility and is the perfect solution to those whose circumstances change from time to time. Animals which are quite often keep in remote fields by summer can have their fencing powered by battey and if brought closer to home in winter can be powered from the mains if outbuildings have 230v sockets.

Very popular for those with portable electric poultry fencing and horse owners who strip graze in summer pasture but want a more permanent power supply in winter without having to think about recharging batteries.
Mains & 12v Combination Energisers

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