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Electric fence chargers
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<blockquote data-quote="Texas PaPaw" data-source="post: 217047" data-attributes="member: 2905"><p>Alan</p><p></p><p>1. You need a separate ground system for each charger.</p><p></p><p>2. While not a perfect measure, joules are about the only common denominator for comparing chargers. Most manufactures rating are extremely optimistic and are based upon ideal conditions with no vegetation load (grass, weeds, brush) to bleed off voltage. You should be able to get a joule rating for each charger to compare. Beware some mfg state output joules, while other give stored joules. <strong><u>OUTPUT</u></strong> joules are what count. If only stored joules are quoted, reduce them by 25-50% to get the equivalent output joules. According to the Missouri Grazing manual & grazing consultant Jim Gerrish, they recommend 1 output joule per mile of fence. Don't skimp on your charger size & the number of ground rods, unless you want to be running a weedeater under your fence all summer. I currently have over 3 miles of fence on a 6 joule charger and it always maintains 5000+ volts (regardless of grass & brush load) unless there is a direct short between the fence & a steel post. Even under the worst conditions, my fence stays hot enough the cattle won't mess with it. Just my 2 cents worth.</p><p></p><p>Good luck & happy trails.</p><p></p><p>Brock</p></blockquote><p></p>
[QUOTE="Texas PaPaw, post: 217047, member: 2905"] Alan 1. You need a separate ground system for each charger. 2. While not a perfect measure, joules are about the only common denominator for comparing chargers. Most manufactures rating are extremely optimistic and are based upon ideal conditions with no vegetation load (grass, weeds, brush) to bleed off voltage. You should be able to get a joule rating for each charger to compare. Beware some mfg state output joules, while other give stored joules. [b][u]OUTPUT[/u][/b] joules are what count. If only stored joules are quoted, reduce them by 25-50% to get the equivalent output joules. According to the Missouri Grazing manual & grazing consultant Jim Gerrish, they recommend 1 output joule per mile of fence. Don't skimp on your charger size & the number of ground rods, unless you want to be running a weedeater under your fence all summer. I currently have over 3 miles of fence on a 6 joule charger and it always maintains 5000+ volts (regardless of grass & brush load) unless there is a direct short between the fence & a steel post. Even under the worst conditions, my fence stays hot enough the cattle won't mess with it. Just my 2 cents worth. Good luck & happy trails. Brock [/QUOTE]
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