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Electric Fence/Electric Fencing
Prior to electric fence installation we have to know how an electric fence works. The energizer of an electric fence converts the mains power into a high voltage pulse about 150 microseconds long. The energizer releases the pulse onto an insulated electric fence once every second. When an animal touches the electric fencing, the circuit is complete and the animal receives a shock (i.e., the pulse). The current flows from the energizer through the electric fencing to the animal. The current then flows down the earth to the ground system thus completing the circuit. The shock stops the animal from putting pressure on the fence line. The shock that the animal receives is a mild one, not life-threatening. The electric fence does not physically harm the animal unlike a barbed wire fence.
Electric Fence Installation
The overall layout of the electric fence security system must be planned out carefully before installation. Some things to consider while planning for a electric fence installation are:
- Total length of the electric fencing.
- Location and length of the supply lines from the energizer to the electric fence.
- Choice of energizers-mains, battery or solar power.
- Direction of current flow.
Other factors to include in the planning stage are:
- Size and shape of the paddock.
- Location of the energizer.
- Careful placement of cut out switches.
- Wire and post spacing taking into account the average height of the animals.
Some things to remember during an electric fence security system installation:
- Use an insulated cable as a leadout, as it waterproof, long lasting, and ensures there is no short out.
- The strainer assembly must be able to withstand the strain applied on it.
- A 121/2 gauge high tensile wire is recommended for most fences.
- The recommended wire tension is about 800 to 1000 newtons.
- Tie off the wire at the post using a strong self-locking knot.
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| Electric Fencing |
Electric Fence Gate |
Electric Gate
In one model, the electric gate's arm movement is controlled by a microprocessor driven motor and gear assembly. This is moved into the appropriate open or close position based on some pre-programmed settings. If the electric gate encounters an obstruction, it stops and reverses direction. A momentary dry contact is supplied to activate the electric gate. An open switch or relay capable of providing dry contact is used as the activation device.
The electric gate can be used as a creep grazing access. The single wire electric fence gate can be electrified at the hinge end and latched on the opposite end into a pinned insulator.
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