How to Fix an Invisible Fence Line Break

Hidden fence, underground fence and invisible fence are all terms describing the family of pet-containment systems that use radio signals to communicate with a receiver collar worn by a pet. Usually the radio signal is transmitted through a wire loop either buried just under the surface of the ground or firmly secured to the ground. When the collar gets close to the barrier, the receiver will warn the dog with various signals that he is near the edge of the containment area. When the wire is cut or broken, the radio signal does not transmit.

Things You'll Need

  • Pliers
  • Wire strippers
  • Electrical tape
  • Wire nut
  • Voltmeter
Show More

Instructions

    • 1

      Locate the break in the fence line. Start at the power box and follow the fence line. It may be difficult to locate the broken wire, especially if the wire is buried. Once the break is located, turn the power off.

    • 2

      Tug on the wire to loosen it up to the point were you can manipulate the wire and repair the break. Trim the wires on each side of the break to ensure the wires have clean, straight ends.

    • 3

      Bare about an inch of wire on each side using wire strippers. Hold the bare wires together with both ends point up. Twist the wires together clockwise, using the pliers. Three or four twists are sufficient. Use a small piece of electrical tap at the base of bare wires to hold them together and to reduce the stress on the twist. Twist a wire nut over the bare ends of the wires as tight as you can twist it with your fingers. The wire nut should completely cover the bare wires. Turn the power on to ensure the electrical current is complete. If the current is not complete, check the wires to see if there is a good contact and tighten the wire nut again.

    • 4

      Wrap the spliced area with electrical tape. Begin wrapping the splice an inch and a half below the wire nut. Wrap the splice over the top of the wire nut, then come back down to where you began to make sure the splice is well protected from moisture and to ensure the wires will continue to make contact.

    • 5

      Turn the power to the fence back on to ensure the electrical current is complete. Bury the splice or tack it down securely to the ground, whatever method was used to secure the rest of the fence. Mark the spliced area so if you need to repair it again, it will be easy to locate.