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A convertible electrical floor box assembly for installation in a poured concrete floor that includes a non-metallic floor box and a metallic outer box. The non-metallic floor box includes a base plate, a perimetrical side wall with one or more openings for accessing the interior, an open top, a mat

A convertible electrical floor box assembly for installation in a poured concrete floor that includes a non-metallic floor box and a metallic outer box. The non-metallic floor box includes a base plate, a perimetrical side wall with one or more openings for accessing the interior, an open top, a mating structure and an internal support structure for receiving a voltage divider. The metallic outer box includes a base plate, a perimetrical side wall with one or more apertures for accessing the interior, an open top and a mating structure. The non-metallic floor box is adapted for installation in a concrete floor or it can be used together with the metallic outer box as an assembly that is adapted for installation in a concrete floor by inserting the non-metallic floor box in the metallic outer box so that the openings and apertures are aligned.

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1. A convertible electrical floor box assembly comprising: a non-metallic floor box comprising a base plate, a perimetrical side wall having an interior side and an exterior side and extending between the base plate and a top edge to define an interior, an open top, one or more openings in the perim

1. A convertible electrical floor box assembly comprising: a non-metallic floor box comprising a base plate, a perimetrical side wall having an interior side and an exterior side and extending between the base plate and a top edge to define an interior, an open top, one or more openings in the perimetrical side wall for accessing the interior, and at least one mating structure on the exterior side of the perimetrical side wall; anda metallic outer box comprising a base plate, a perimetrical side wall having an interior side and extending between the base plate and a top edge to define an interior, an open top, one or more apertures in the perimetrical side wall for accessing the interior and at least one mating structure extending inwardly from the interior side of the perimetrical side wall;wherein the non-metallic floor box is adapted for installation in a concrete floor, or wherein the non-metallic floor box and the metallic outer box are used together as an assembly and are adapted for installation in a concrete floor and wherein, when the non-metallic floor box and the metallic outer box are used as an assembly, the non-metallic floor box is received in the interior of the metallic outer box and the mating structure of the non-metallic floor box engages the mating structure of the metallic outer box. 2. The convertible electrical floor box assembly according to claim 1, wherein the non-metallic floor box further comprises an internal support structure in the interior that extends upwardly from the base. 3. The convertible electrical floor box assembly according to claim 2, wherein the internal support structure of the non-metallic floor box comprises a pair of opposing slots formed in the interior side of the perimetrical side wall and adapted to receive a voltage divider. 4. The convertible electrical floor box assembly according to claim 1, wherein the perimetrical side wall of the non-metallic floor box is curved. 5. The convertible electrical floor box assembly according to claim 1, wherein the mating structure of the non-metallic floor box comprises a pair of slotted members formed in opposite sides of the perimetrical side wall. 6. The convertible electrical floor box assembly according to claim 1, wherein the mating structure of the metallic outer box comprises a pair of members located on opposite sides of the perimetrical side wall. 7. The convertible electrical floor box assembly according to claim 1, wherein the mating structure of the non-metallic floor box comprises a pair of members located on opposite sides of the perimetrical side wall, and wherein the mating structure of the metallic outer box comprises a pair of slotted members formed in opposite sides of the perimetrical side wall. 8. The convertible electrical floor box assembly according to claim 1, wherein the non-metallic floor box has a plurality of tabs extending from the exterior side of the perimetrical side wall at the base and each tab has an aperture, wherein the metallic outer box has a plurality of threaded openings in the base plate corresponding to the apertures in the plurality of tabs, and wherein the apertures and threaded openings are adapted to receive mounting screws for securing the non-metallic floor box in the metallic outer box. 9. The convertible electrical floor box assembly according to claim 1, wherein the perimetrical side wall of the non-metallic floor box is substantially round or oval in shape and the perimetrical side wall of the metallic outer box is rectangular, hexagonal or octagonal in shape. 10. The convertible electrical floor box assembly according to claim 9, wherein a removable plate extends between the perimetrical side wall of the non-metallic floor box and the top edge of the metallic outer box. 11. The convertible electrical floor box assembly according to claim 10, wherein the removable plate is secured to the metallic outer box by one or more fasteners or screws. 12. The convertible electrical floor box assembly according to claim 1, wherein the one or more openings in the non-metallic floor box and the one or more apertures in the metallic outer box are correspondingly located to provide access to the interior of the non-metallic floor box. 13. The convertible electrical floor box assembly according to claim 1, wherein the one or more apertures in the perimetrical side wall of the metallic outer box are located adjacent the base plate. 14. The convertible electrical floor box assembly according to claim 1, wherein the one or more apertures in the perimetrical side wall of the metallic outer box are selectively sealed with removable plugs. 15. The convertible electrical floor box assembly according to claim 1, wherein the open top of the non-metallic floor box is adapted to receive a removable cover. 16. The convertible electrical floor box assembly according to claim 1, wherein the perimetrical side wall of the non-metallic floor box has a pair of opposing slots that extend from the top edge to the base plate and have an open end at the top edge of the perimetrical side wall, and wherein the pair of opposing slots are adapted to receive a voltage divider. 17. A convertible electrical floor box assembly comprising: a non-metallic floor box comprising a base plate, a perimetrical side wall having an interior side and an exterior side and extending between the base plate and a top edge to define an interior, an open top, one or more openings in the perimetrical side wall for accessing the interior, and a pair of opposing mating structures on the exterior side of the perimetrical side wall; anda metallic outer box comprising a base plate, a perimetrical side wall having an interior side and extending between the base plate and a top edge to define an interior, an open top, one or more apertures in the perimetrical side wall for accessing the interior and a pair of opposing mating structures extending inwardly from the interior side of the perimetrical side wall;wherein the metallic outer box is adapted to receive the non-metallic floor box and the mating structures of the non-metallic floor box engage the mating structures of the metallic outer box, and wherein the one or more openings in the non-metallic floor box and the one or more apertures in the metallic outer box are correspondingly located to provide access to the interior of the non-metallic floor box. 18. The convertible electrical floor box assembly according to claim 17, wherein the non-metallic floor box further comprises a pair of opposing slots formed in the interior side of the perimetrical side wall and adapted to receive a voltage divider. 19. The convertible electrical floor box assembly according to claim 18, the pair of opposing slots on the interior side is correspondingly located opposite the pair of opposing mating structures on the exterior side of the perimetrical side wall of the non-metallic floor box. 20. The convertible electrical floor box assembly according to claim 19, wherein each of the opposing slots and each of the opposing mating structures are disposed between a pair of openings in the perimetrical side wall. 21. A method of installing a convertible electrical floor box assembly in a concrete floor comprising: providing a non-metallic floor box and a metallic outer box, wherein the non-metallic floor box comprises a base plate, a perimetrical side wall having an interior side and an exterior side and extending between the base plate and a top edge to define an interior, an open top, one or more openings in the perimetrical side wall for accessing the interior, and a mating structure on the exterior side of the perimetrical side wall, wherein the metallic outer box comprises a base plate, a perimetrical side wall having an interior side and extending between the base plate and a top edge to define an interior, an open top, one or more apertures in the perimetrical side wall for accessing the interior and a mating structure extending inwardly from the interior side of the perimetrical side wall;positioning the metallic outer box on a substrate for a poured concrete floor;inserting the non-metallic floor box in the metallic outer box, wherein the mating structure of the non-metallic floor box engages the mating structure of the metallic outer box and the openings in the metallic outer box and the non-metallic floor box are correspondingly located and aligned;connecting conduit to at least one of the apertures in the metallic outer box;installing a cover on the top edge of the non-metallic floor box; andpouring a concrete floor around the convertible electrical floor box assembly.