How do electric fences work?
Typically, an electric fence will include a system of wires or tape capable of carrying an electric charge. During installation, the electric fence will be connected to an energizer (which provides the power for the electric shock) One part of the energizer connects to an electric fence, the other connects to a rod that is earthed into the ground. When the animal makes contact with the fence, a circuit is completed and the animal receives a short shock.