What does an electric fencing system consist of?

Before we get on to how an electric fence works it is important to know what the main components of an electric fence are.  An electric fence can be powered from mains, battery or battery & solar panel.  So in very general terms the components below are what you would need for each system:

Battery System

  • battery (preferably 12v leisure battery)
  • energiser
  • an earth stake or spike
  • polywire, galvanised wire, rope, tape or netting
  • posts and/or insulators

Mains System

  • energiser
  • an earth stake or spike
  • length of lead out cable (to run from energiser to fence)
  • crocodile clips
  • cut out switch (optional, useful if your energiser is a long way from your fence and you want to be able to turn your fence off at the fence)
  • polywire, galvanised wire, rope, tape or netting
  • posts and/or insulators

How does an electric fence work?

The energiser converts either mains or battery power to create a high voltage pulse.  The pulse is very short and is then repeated about 1 every second.  This pulse is commonly referred to as a shock and is felt by the animal as it touches the fence.  The pulse having travelled through the animal then flows back through the earth to the earth stake hence creating a circuit.

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