Do under cabinet LED lights need a transformer?
When installing low voltage under cabinet lights, you will have to take some special measures. You’ll need a transformer to convert your home’s voltage supply to a much Page 11 11 lower number, and if you plan to use any accessories, like dimmers, they’ll need to be compatible with your lighting system.
What kind of wire do you use for under cabinet lighting?
Although wire size ultimately depends on your light-fixture manufacturer’s specifications, 12-gauge wire is standard for most incandescent and fluorescent under-cabinet fixtures. A basic installation requires a 12-2 NM cable.