No use for insulators with the WoodShield posts. Gippsland dairy farmer, Owen Billings, is electrifying the WoodShield posts running 6-8 volts directly onto the fence. As the posts are totally encapsulated in the plastic they are totally insulated and wires can be tacked on with a staple. Because the plastic does not dry out, split and crack, there are no loose staples. Electric fencing at its best and saving time and money.