Just a slight warning if you live in an area of occasional thunderstorms. A friend of a friend here in southern sweden was left with a nasty burn along the length of a robotic lawnmower wire he had buried in the lawn when lightning struck and jumped from a tree to this wire.

That was only one wire that I forget the purpose of, perhaps as electronic barrier. I can't imagine the mayhem of a grid of wires being struck with the same misfortune.