Abstract: A track lighting apparatus includes a frame, a power distributor, and an electrical interface. The frame includes a track configured to support a plurality of light fixtures. The power distributor electrically connects two or more inputs to two or more supply channels. Each supply channel is electrically insulated from other supply channels. The electrical interface includes electrical components that form two or more supply channels such that the supply channels form an incomplete series circuit that includes two or more breaks. A light fixture or a jumper is electrically connected across each break to complete the series circuits.