When Pete’s dad bought our first electric fence energiser from a garage sale, it came with a roll of electric fence polywire that turned out to be lots of short lengths joined together with knots. When we set up the energiser with this wire it did not provide a decent shock because all the joins did not connect all the wires properly. If you have a good look at polywire you will find that it is several strands of very thin wire woven into a plastic mesh. The heavier duty more expensive polywire has more wires and stronger mesh. If you need to join two lengths of polywire, you need to make sure that all the individual wires are in contact to pass on the electrical charge down the fence. We ended up buying a new roll of polywire, and then the fence worked properly. melting the ends of the polywire Much later I came across the answer in one of the manuals that the electric fence companies give out (if you are interested in electric fencing, this is a great way to find out more, ...