is secured against surfaces 122 d since the electrical receptacles are electrically isolated and pre wired in one of the various forms described herein they can be mounted external to recessed electrical box 120 as illustrated in fig8 11 this creates a deep opening within the wall as illustrated in fig1 encased receptacles that can be utilized with the recessed electrical boxes of the present invention may include both power input and power output and coupling 15 which are electrically insulated and pre wired to meet applicable building codes the encased receptacles 10 and 20 further include mounting frames 25 the frames may be overmolded or externally affixed to receptacles 10 and 20 the mounting frames 25 include tab connection holes 25 a in the preferred embodiment the mounting frames 25 are substantially co planer with the front face of receptacles 10 and 20 as illustrated in fig1 a larger front opening 120 d is of sufficient length and width to allow access to the mounted receptacles 10 located inward of opening 120 d as illustrated in fig1 in the field a hole would be cut in the wall at a dimension less than the periphery of face plate 122 flange 122 b utilizing the engagement claws 124 against the interior wall mounting surface 45 b by turning the positioning screws.