A support block for a rotatable plug assembly includes a base and electrical plug pins extending outwardly therefrom. A medial wall extends from the base. A cap is hingedly attached to the medial wall and is moveable between open and closed positions. A sidewall extends from the medial wall and has at least one notch disposed therein. At least one electrical wire is connected to the support block and extends through the at least one notch. The cap fixedly retains the at least one electrical wire within the at least one notch when in the closed position.