Another company had installed LED landscaping lighting in the past at one of my customers’ homes in Austin but a half dozen lights were out. We assumed the cause was a shorted wire in the landscape, since new LED lights rarely fail. As it turned out, the installation company had used multiple taps on the transformer including the 14 volt tap. There was such a light load on the transformer that the 14 volt tap was actually putting out 14.8 volts. No tap above 12 volts should have been used, and the excess voltage ruined $200 in bulbs plus the labor to trouble shoot the problem.
Using a multi meter to test the voltage during installation is supposed to be common sense. The reality is many companies just hook up the wires and assume if the lights come on they did the job correctly. Plantscape Solutions not only tests the voltage of the runs in every project but the amp flow as well to insure there will be no problems later.