Does An Invisible Fence Have to Be a Closed Loop? (Solved!)

Yes, in order for the invisible fence to work, it needs to be a completely closed loop. There are a few other variables to watch out for, too. One of the first things you should do when installing an invisible fence is to mark out where your utility lines are located. These lines can interfere with your invisible fence.

If you’re unsure where those lines are located, then you can sometimes find an invisible fence company that will mark them for you. The company may also install your fence for you. Otherwise, you can call your utility company to see if they can come and mark those locations for you.

brown dog with inivisible fence collar on grass

Along with public utilities, you also need to know where your private utility lines are located. Those may be gas canisters or low voltage power lines. Mark them and keep from burying your wire near them, too.

The good thing about most utility lines is that they’re a foot deep within the ground. Your invisible fence should only be buried a few inches within the ground. It’s unlikely that you’ll hit those lines while burying the wire.

If you intend to bury with a large tool, then it may be wise to shut off your power or water if you’re unsure where those lines are connected. This will prevent any damage from occurring to those lines. The last thing you want is to hit your water line and flood your yard. Power lines should also be avoided to prevent lethal consequences.

Running your invisible fence wire parallel to the utility lines is the biggest problem. You can run them perpendicular without problems. If the invisible fence line runs parallel to the other lines, then you’re creating a closed-loop that interferes with the signal.

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How Do You Cancel Out Parts of Underground Fence for Dogs?

There are a few ways that you can cancel out the signal in the fence. This is useful if you want to let your dog into certain parts of the yard that are otherwise restricted. It also helps to ensure your dog is able to get to the back door of the house.

The most effective way to cancel out a part of the underground fence is to twist the wires. When you twist the wires together, it cuts the signal. Your dog is able to pass over that area without it sending a shock to the collar.

dog with invisible fence collar in grass

You can use the twisted wires at any part of your line. When you want the wires to be active again, then you stop the twist and continue to layout the wire as you were before.

Another way to cancel out parts of an underground fence is to incorrectly place them close to a utility line. The line can often trigger the fence wire to not emit a signal. Or it may give a false signal.

Finally, you can sometimes cancel out a part of the fence by placing a double loop close together. When two wires of the invisible fence are placed close to one another, they can interfere with the signal. However, your dog may still receive stimulation from the collar at times.

A twisted wire is the best way to cancel out the signal.

How Close Can Invisible Fence Wires Be?

The standard is four feet. Invisible fence wires can be four feet apart from each other in order to work. If you’re installing a double loop fence and want to make the signal stop, then you may want to put your lines closer.

Otherwise, you’ll need to keep them separated by four feet. This goes for horizontal applications as well as vertical applications.

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hunting dog in yard grass with invisible fence collar

If you’re running the lines perpendicular to one another, then they do not need to be four feet apart. They can even cross. It’s only when the lines are running parallel to one another that they need to be separated by four feet.

This also applies to utility lines. You should keep your invisible fence wires four feet away from utility lines.

You’ll also want to consider the depth of your utility lines. Even if your utility line is a foot below the surface, you may find that it’s a better idea to bury your invisible fence wire four feet away from the line first, and then dig down. This can avoid any problems you may experience with the signal.

Can You Dead End an Invisible Fence?

You can make a dead end with your invisible fence. If you’re trying to keep your dog in one contained area or keeping them from being able to run into one area, then it’s possible. You need to twist the wire.

Surround the area that you don’t want your dog to enter with the invisible wire. You may need to use a double loop. Then twist the wire from the end of the loop all the way to the power source.

This will keep your dog from running into a specific area while still being able to travel over the wires in the yard without any correction.

How Does Invisible Fencing Work?

Invisible fencing works through transmitters. The wire acts as a checkpoint. It emits a signal which is read by the collar. As a dog approaches a wire, it tells the collar to issue a warning sound. Dogs will eventually learn that when they hear that noise, they need to back away.

If the dog continues to go near the wires, then the signal will tell the collar to release a correction. This results in a shock. You’re able to switch between the various intensity levels of the correction to ensure your dog feels it but isn’t harmed.

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Twisted wires are wires that are unable to emit a signal. When your dog approaches one, the wires are dormant. The collar will not emit a warning sound or a correction.

All wires lead back to a power source. If the power is turned off, then the entire invisible fence is no longer operational.