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There are many reasons for setting up an electric fence - keeping horses, dogs, and other pets in; or keeping dogs, cats, and nuisance animals out. We bought the Havahart electric fence charger to keep woodchucks out of our small vegetable garden and it has been working well. If you're trying to keep a boisterous 125-pound Lab contained inside a two acre plot, your results may vary.
The item being reviewed is a battery operated electric fence charger, the Havahart model SS-2DX which is rated for a five acre property and it uses two 'D' batteries. The area being protected is small - our garden area is about 25' x 25' with buildings on either side and a chain link fence along the back, so the electric fence wire is only a 35' stretch of single strand wire across the front of the garden area.
You don't need many tools or supplies for attaching the charger and earth ground. A Phillips screwdriver, a pair of pliers to cut the wire, a hammer to drive in the ground rod, and a ground clamp. The ground rod was an eight-footer from Lowes that was cut in half, and the ground clamp and 17 gauge wire came from Tractor Supply. If you don't have a Lowes or Tractor Supply nearby, Amazon sells all three fence supplies. The Havahart charger instructions recommends a minimum of two feet long for the ground rod, but a four-foot ground rod is better especially if you have sandy soil. The ground clamp and 17 gauge electric fence wire Amazon sells are the same as the ones we bought at Tractor Supply and are competitively priced.
Here's a short video showing how to set up the electric fence charger: