the diagram below shows a strand of electric fencing attached to plastic ensulators attached to the wooden posts of a barb wire fence, which is attached to a power pack and hooked up to a 12 v battery, this is designed to keep your horse of the bard wire fencing.

The picture below are drawings of how an electric fence would be put together, using poly posts and tape of wire, attacheched to a power pack hooked up to a 12 v battery, also using a spring gate with insulated handles.