What Kind of Wire Should I Get?
18 Gauge vs. 20 Gauge
Our experience has been that anything that cuts through 20 gauge wire also cuts through the slightly thicker 18 gauge wire. The natural predators of boundary wire are the power edger, lawnmower and aerators (in that order). These three devices result in most breaks in boundary wire. They will slice through the 18 gauge wire as easily as the 20 gauge.
Both the 20 gauge and 18 gauge wire are pretty resilient to all kinds of blunt trauma such as cars and pedestrians. They are both fine for large installations and small installations alike.
All that said, the thicker gauges of wire are not particularly expensive so if it makes you feel any better knowing that you have a thicker gauge of wire go for it. We can upgrade most of the kits to 18 gauge, just use the wire drop down box on the purchase page.
The wire is regular insulated single wire that you can get at any hardware store. (It does not matter if the wire is solid core or stranded) Try and get wire that is ‘rated for direct burial.’ It will last longer in the ground than regular wire, where the insulation can break down over the years, particularly where there is acidic soil. If you can’t find wire for direct burial, don’t stress, our experience has been that almost any old insulated wire will last many years.
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