This single-feed surface transformer converts standard 120 line voltage to 12 volts to provide the necessary voltage for powering a low-voltage lighting system. It can power lamps totaling up to 300 watts. he transformer is concealed inside a decorative housing with a single integral power feed. This transformer is equipped with fast-acting short circuit and overload protection that will safely turn off the system should a short occur. Once the short is removed, the unit can be reset by simply flipping the wall switch off and back on.