For low-voltage systems, connect the NM cable to the LED driver, then run Class 2 low-voltage wire from the driver to the LED strips. This guide provides a clear overview of the required wiring setup, focusing specifically on low-voltage LED systems. Light sources typically manifest as flexible LED tape strips or small. Selecting the power delivery and voltage dictates the wiring methodology for any under cabinet lighting project. Homeowners must choose between a plug-in system, which is the simplest but often leaves a visible cord, or a hardwired installation that connects directly to the home's electrical system. In brief, you run low-voltage (16/2 or 18/2) wiring from the underside of the cabinet (s) to a location where you can mount a step-down transformer, which provides either 12 volts or 24 volts to power the lights; the line side of the transformer is fed from a switch, or better still, a "magnetic. This guide covers every aspect of under cabinet lighting installation — from choosing between LED strips, puck lights, and linear fixtures to understanding hardwired vs plug-in options, NEC code requirements, LED driver placement, low voltage vs line voltage wiring, switch and dimmer selection, and. To wire under cabinet lighting, begin by picking out the fixtures you want to install. Consult with an electrician before starting the project to ensure proper installation.