Review Of How Far Can You Run Low Voltage Landscape Lighting Ideas. Web enter the distance you would like to run, the voltage used, and select the wire gauge from the drop down menu, and the calculator will tell you the maximum va or w available. Use a maximum length of 100 feet of 12 gauge cable per 100 watts of light.

Which gauge wire is best over long distances. This is not much of a concern for led systems since voltage drop for most systems is minimal. And of course, use a voltmeter to check the voltage at the fixture.