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Dog Fence Wire

As the most important part of your in ground fence system, the type of fence wire you choose to use should be carefully considered.  When considering what in ground dog fence wire to purchase, the first thing, and most important part of your decision, to consider is the gauge of your underground fence wire.  The gauge of the wire you select determines the durability and work-ability of the pet fence wire, and the expected lifetime of the system.   

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Comment / Questions about Dog Fence Wire

June 28, 2014

What is the difference between the Xtreme dog fence monster brand and and the regular 14 gauge, there seems to be a big price differnce.


The Xtreme Brand dog fence wire has a much thicker coating than the standard 14 gauge dog fencing wire, approximately twice as thick, both wires use a polyethylene coating which is far superior to PVC or THHN Wire found at most big box stores. The coating is what gives the fencing wire the most longevity and the least amount of maintenance over time.

March 24, 2015

Donald: Do you sell the tool/reader to find breaks in the electric dog fence? Flexpetz: Yes. Let me get you a link. https://www.flexpetz.com/petsafe-wire-break-locator-rfa-50.html What size wire do you have? Donald: Not sure on the size wire. I have a Sport Dog system Flexpetz: OK. Is it the thin green wire? Donald: Yes it is Flexpetz: That is the factory grade 20 gauge wire. You may want to consider a better quality wire for the cost of the locator. How much wire do you use? Donald: I used around 750 feet of wire for my yard. Flexpetz: Our Extreme™ Wire will last you 15 years w/o corrosion. Check this out. https://www.youtube.com/watch?v=ncvbguXC_6o I will get you a link for the Extreme Wire 1000 ft. Donald: Thanks Flexpetz: https://www.flexpetz.com/monster-dog-fence-wire-14-gauge-1000.html The factory grade wire is junk. You will be fixing breaks constantly. Donald: And my transmitter will not have a problem with it? Flexpetz:Not a problem. The SportDOG transmitter is one of the best in the industry. We would have advised you on this wire on your original purchase to save you future headaches. Donald: How would you recommend installing this type of wire? Flexpetz: The best way is to bury it 2-3 inches deep but, it has such a heavy polyethylene coating you can staple it to the ground and let the grass grow over it. This will take about a month before mowing. Donald: OK thanks for the info, you have been very helpful! Flexpetz: You are welcome. Have a wonderful day.


The wire break locator is a valuable tool for finding wire breaks. I would highly recommend this product to make to repair easy and quick.

January 04, 2015

My question is will the signal from the boundary wire interfere in any way with an electric fence for cattle? Will the signal induce a current in a wire fence? How far away from the cattle fence does the wire have to be?

Boundary wire size over extended length requirements? As length of boundary wire circuit increases does the AWG size of the wire change? Can I splice heavier wire into the boundary loop where it goes under the driveway? Is it 120volt?


Hi Daniel, Yes, if the electric dog fence runs parallel with the electric cattle fence it will interfere with the radio signal in the dog fence. It would need to be 4-6 ft. away to avoid that. AWG size does not improve or diminish the quality of the signal transmitted. Heavier gauge wire with a thicker and more durable coating will withstand the elements better. The max size of a system is based on the transmitter, most transmitters max out at 10 acres. The SportDOG Containment Fence can handle up to 100 acres. Rather than splicing heavier wire in, we'd recommend using a professional grade wire throughout the installation to avoid wire break issues down the road. Check out our wire demo https://www.youtube.com/watch?v=ncvbguXC_6o Yes, it is 120V.

Chad Barnet
January 04, 2015

> I'd like to order a 500 ft roll of the 16 gauge wire. I can't afford the Extreme wire at this time. We've had lots of other expenses lately. How would you like me to order the wire? I have completed the Amazon return form. I believe it is waiting for approval from the vendor (I guess that is you.)
> I do have two questions regarding the running of the wire. I have a drainage pipe that runs under a sidewalk.Will the signal penetrate through the concrete? It's about 4" thick. Also, I'm trying to run the wire across my front door to complete the loop but we need to cancel out the signal so we can bring the dog in and out of the front door. The best way for me to disguise the wire is run it around the trim of the door. I know I can use twisted wire but it's my understanding that it is limited to 10 ft. I don't think that will be enough. How far away does the wire have to be from the collar so it won't send transmit to the collar? Do you have any suggestions?


Hi Chad, I think you had better call me on your twisted wire idea...that unfortunately is not going to work, twisted wire has very very limited applications, and you can not do three way joints. Refer to this page on our site for various layouts https://www.flexpetz.com/dog-fence-planning and this page on twisted wire https://www.flexpetz.com/dog-fence-planning-twisted-wire Your best bet will be to make a continuous loop with the wire around the front and the back, no way to cancel the wire out over a door way like you had suggested. If you had to do it that way I would suggest taking the dogs collar off.

November 04, 2014

If we are going to strap it to an existing metal pole fence and we are needing to loop (back track) the wire to complete the circuit ( two sides of our property are already fenced) how do we backtrack using the same pole fence or do we need to bury it below the fence? Also, how many extra feet are needed to twist a length approx. 50 feet? Thank you for taking the time to help. I am trying to help my single neighbor who saved two dogs from being put to sleep.


Hello, You can certainly use the physical structure to double up the wire, but keep in mind to avoid cancellation you would need to separate the wires by a distance (usually determined by the range or distance you have set on the dog fence transmitter) For example if you are doubling up and have the distance set at two feet you would need to separate the wires by 2-3 feet to avoid overlap and signal cancellation. See this page https://www.flexpetz.com/dog-fence-planning there are some helpful videos and various layouts that might further assit you in understanding the differn't layouts involving a double loop dog fence layout.  

Also very very careful how you use Invisible Fence Twisted wire, the twisted dog fence wire can never be used to subsitute a complet ciruit, you can not have three way joints, and you can not add sections of twisted wire in the middle part of the fence at any point. The only way to really use twisted wire is from the transmitter to the main loop, in essence twisted wire is just part of the main dog fence loop, the wires cross so closely, that it causes the signal field to cancel at this point, and for the collar not to react. See this page on twisted dog fence wire. As always, feel free to call for expert dog fence advice

Stuart R.
March 13, 2015

I have a large, 7 acre property, and would need around 2000 feet of wire. Is there a limit to how much cable can be energized??



It's the fence system transmitter, which dictates how much wire can be functionally used. For instance, the Elite Little Dog fence can cover up to 25 acres. However, the SportDOG fence can cover up to 100 acres. All you would need to do is to add enough wire to do so. Most fence systems we offer can easily cover your 7 acre area without issue.

I would recommend you have a look at our diagram guideline for acreage and corresponding wire requirements HERE.
It may help you in your planning.



Lenny Ballersradt
December 10, 2015

Can you recommend a good system using 14 ga.wire for a acre & half containment area.


Hello Lenny,

Thank you for reaching out to us.
I have a great system that would be ideal for your acre and a half.
It is the Perimeter Pro Grade
Here is a link for the system:

This system is made here in the US and has a lot of great reviews for effectiveness.
Thank you for your time.
Merry Christmas!


Julie Angulo
"Dog Fence Tech"
800-396-5517 FREE FREE Toll Free

We have the FREE Tech support to make this DIY project easy for you.

Shane Wright
May 11, 2016

What a pleasure looking through your website. All my concerns went away and questions have been answered. I've been fighting my fence for years. Kind of a hillybilly with some repairs. Tried to save money once and bought thermostat wire and UN-twisted it to bury it. Gotta laugh at myself now. Ordering the Extreme wire as I type. All American made to boot! I'd vote for Mike any day over Trump/Hilary.


Hello Shane,

Thank you for your kind words.
Have a great day.

Julie Angulo
Sales and Support Leader
800-396-5517 Toll Free

We have the FREE Tech support to make this DIY project easy for you.

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