Something I want the OP, and others to consider, and this is a true story I saw firsthand. One of my neighbors had one of these type of fences, and during a storm, lightening struck a tree in his back yard, it traveled to the base of the tree where it *found* the copper fence wire. It then followed the wire out to the front yard underneath his driveway to where the wire was wrapped around the homes 1" pvc water supply pipe, the pipeline was shattered! Then into the garage where it blew the fence controller, and the sprinkler clock clear across the garage, the pieces of which, hit, or skipped across both his cars, and finally into the house, need I tell you what happened next??? Something I cannot explain, but like I said, I saw this with my own eyes, the homeowner showed me that their bedroom doorknob had been blown off, WTF!!
This dog fence was a pro install, so me thinks the mans insurance co. will be getting in *touch*.
Just my 2 cents, and food for thought.