The permanent fence guide for paddocks

55 Explanation of technical terms • What does voltage mean? A high voltage is needed to provide long fences with power and two create a conductive “channel” between the fence wire and the animal's body. The minimum voltage required for this is around 2,500 Volt (at each point of the fence system). For animals with a thick coat, we recommend 4000 V minimum. • What do the technical terms input and output joules mean? The shock effect depends on the level of pulse (output) energy in joules (voltage itself does not hurt!). The more insensitive the animal is, the greater the energy needed to secure or scare it. The demand for pulse energy also increases with the length of the fence and its load (e.g. vegetation). The charging (input) energy is the energy that the device consumes. The pulse (output) energy is the most important parameter for assessing the power of a fence device. • What does conductor resistance mean? The conductor resistance is a measure of the conductivity of the fence material. It is specified in ohms/meter. The lower this value, the better the material’s conductivity. The best materials have a resistance of around 0.5 ohm/m and below, while poorer materials have over 4 – up to as much as 15 ohm/m. The longer the fence, the better the conductivity of the material used must be. • What kilometre figures should you base your decision on? Kilometre figures are often highly theoretical values that are based on the best possible conditions (wire conductivity, connections, insulation status, ground conditions, earthing) in the fence system. These conditions change constantly, however, due to the influences of weather. It is therefore important to achieve the minimum protective voltage of 2,500 Volt at each point of the fence system in all conditions. In Input joules Out Output joules The technical terms you need to know. ... Voltage? Input/output joules? Resistance? heavy vegetation max. medium vegetation max. no vegetation max. Voltage