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The European union is shortly passing legislation that energisers may not exceed 5 Joule output rating. This has been done on safety grounds and that the larger units simply are not required within the EU. A 5 Joule energiser can power up to about 130klm of wire and very few - if any- situations in Europe require that sort of energy.
The safety comes from the mathematical equation that determines the Joule rating. This is a simple formula of Voltage x Amperage x Pulse length. Therefore a 5 joule energiser would have a sort of configuration like;-
In order to build an energiser that will release 25 Joules onto a fence some pretty clever technology has to be devised in order to be able to SAFELY achieve this. As any of the parameters are increased so the safety of the fence is decreased;-
Unfortunately the big New Zealand manufacturers see this as a trade barrier and have referred it to the World Trade Organisation.
“The French delegation was effectively trying to impose a non-tariff trade barrier by proposing a new standard drastically reducing permitted power levels. They said this was for safety reasons but our view – which was backed by the majority of countries present - is that it was a commercial issue.
“They were trying to bar New Zealand 's very successful electric fencing products from being marketed worldwide other than with a very low power output.”
It is true that these large energisers have been on the market for years and have not resulted in deaths, they are used in wide open spaces with little population pressure - very different to the European situation. Rarely is it necessary to feel an energiser greater than 5 joules is warranted in the European market as the population density and farm sizes do not lend themselves to the extended fences found in Australia.
In addition to that the New Zealand companies have already competed in the European market with smaller energy energisers for many years so their business model is not affected.