A fuse system protects an electric fence box from lightning strikes that hit a fence connected to the electric fence box via the fuse system. The fuse system includes at least one fuse connecting an output terminal of the electric fence box to the electric fence and an optional second fuse connecting a ground terminal of the electric fence box to earth ground. Each fuse includes a filament at least 12 inches long inside a non-conductive tube (e.g., Mylar). A first lead connects a first end of the filament to the output terminal of the electric fence box, and a second lead connects a second end of the filament to the electric fence.
