Technologies are generally described for a socket, plug, and jumper system. In an example, a receptacle socket includes a first prong receptacle for a ground circuit, a second prong receptacle for a neutral circuit, and a third prong receptacle for an active voltage circuit. A plug housing includes a first prong contact corresponding to the first prong receptacle for the ground circuit, a second prong contact corresponding to the second prong receptacle for the neutral circuit, and a fourth prong receptacle for the active voltage circuit. A jumper component includes a third prong contact corresponding to the third prong receptacle for the active voltage circuit, and a fourth prong contact corresponding to the fourth prong receptacle for the active voltage circuit, wherein the fourth prong contact is completely recessed within the jumper component.