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There are two basic types of dog fence wire: factory-grade wire and heavy duty wire. You won't see professional companies like Invisible Fence® using factory-grade wire. Why? Because they know that a higher quality wire translates to a better user experience and that equals more happy customers. Factory-grade wire (the wire included in all DIY dog fence kits) is of medium quality. Regardless of the gauge (more on wire gauge later), factory-grade wire has a vinyl jacket (the coating that covers and protects the copper). The vinyl degrades and cracks over time exposing the copper to the elements and essentially leaving it unprotected and open to rust and breakage. Unlike factory-grade wire, Heavy duty wire features a polyethylene plastic jacket that protects the copper core from weather, animal chews, and general wear and tear.

Most dog fence kits include a 500 ft. spool of the thin 20-gauge wire. 20-gauge wire is cheaper and lighter to ship and works well enough to be the wire the manufacturer includes with the dog fence kit. For most dog fence installations, we recommend upgrading to Heavy Duty Wire. The thicker wire is more resilient by nature of its increased size. It’s harder to cut the heavy duty wire and it stands up better to foot traffic, lawn equipment, and the elements.

Upgrading your dog fence wire right from the start does represent an increase in the cost of your initial investment but the return on that upgrade is well worth the money. The superior jacket paired with the increased size of heavy duty dog fence wire protects your investment and saves you the costly and time-consuming hassle of locating and repairing a broken dog fence wire down the line. We generally recommend heavy duty wire across the board because we have confidence and years of experience showing that heavy duty wire just holds up better. With that said, heavy duty wire is especially recommended for above ground installations, areas that have severe weather (especially ice and snow), areas that have rocky soil, areas that are heavily treed, and areas where lawn care equipment is frequently used as these conditions are particularly hard on your dog fence wire.

Twisted Wire

Twisted Wire is used to connect your perimeter wire to the transmitter box and also to connect internal ‘no-go’ zones to the rest of the perimeter without creating a boundary line (so basically anywhere the wire should not trigger the collar to issue a correction). Ready made pre-twisted wire is available and the best choice. We offer twisted wire in Heavy Duty 20, 18, 16 and 14 gauge wire.


Factory Grade Wire

This is the wire included in all self-install kits. Regardless of gauge, this wire is of medium quality, lighter weight and keeps shipping and initial costs down. This wire will work but does not hold up to the elements as well as a professional grade wire. The vinyl wire coating is prone to cracks and over time exposes the copper leaving the wire susceptible to damage. This can cause issues that impact the functionality of your dog fence system. Since finding, digging up, and repairing wire breaks can be a tedious job at best, many people prefer to upgrade to a pro-grade wire from the start.

heavy-duty-wire.jpgHeavy Duty Grade Wire

The initial cost of heavy duty grade wire is a bit more than manufacturer grade wire. However, there are many benefits to choosing heavy duty wire for your dog fence. Heavy Duty grade dog fence wire holds up better to freezing conditions, sunlight exposure, contraction and expansion of the ground, water exposure and general wear and tear. The long term savings in time and replacement if you are planning on staying in your home for at least a year or more, makes the heavier duty wire a much better investment.

How Much Wire Do You Need?

Acres Feet of Wire