A common ground system and methodology for one or more loads. In exemplary embodiments, a lamp load is regulated by providing a common ground on the secondary side of the transformer and the load. Lamp regulation is provided, in part, via a current feedback loop provided on the secondary side that is commonly grounded between the bottom of the transformer and the bottom of the lamp through the current feedback loop. In this manner, a feedback signal is developed that includes the leakage current of the lamp.