Electrical transition fitting
View Patent ↗An electrical transition fitting for enabling electrical wires contained in multiple cables to be extended through an electrical conduit, or into a panel box. The fitting has a lower body member having a first member dimensioned for receipt of an electrical conduit or passage through a knockout hole of a panel box, and a second member with a slot at a second end, an upper body member having at least three bores formed therein, the bores for receipt of the cables, the upper body member having a plate at a first end, the plate dimensioned for contact with a perimeter of the second member and having a tab for receipt in the slot, and a hole for receipt of a fastener to secure the upper body member to the lower body member and plastic insulators and inner locking devices for installation in the bores.
1. An electrical transition fitting for enabling electrical wires contained in N metal clad or armored clad cables to be combined and extended through an electrical conduit or into an electrical panel box, comprising:
a lower body member having:
a first member with an open first end dimensioned for receipt of an electrical conduit or for passage through a knockout hole in a panel box or the like, and
a second member integrally connected at a first open end to an open second end of the first member, said second member having an open second end with a perimeter greater than a perimeter of the first open end of the second member, the open second end also having at least one slot formed therein;
an upper body member having an extended region with N bores formed therein, the bores for receipt of a metal clad or armored clad cable, the upper body member having a plate at a first end, the plate dimensioned for contact with the perimeter of the second open end of the second member of the lower body member, the plate having openings formed therein at least in partial alignment with the bores, the plate including a hole formed therein, the hole for receipt of a fastener so as to secure and electrically bond the upper body member to the open second end of the lower body member, the plate also having at least one tab dimensioned for receipt in the at least one slot of the second end of the second member;
N plastic insulators each dimensioned for snap in installation in one of the N bores at the first end of the upper body member; and
N inner locking devices each dimensioned for press-in installation in one of the N bores at a second end of the upper body member and further configured to capture a metal clad or armored clad cable;
where N is an integer greater than two.
2. The electrical transition fitting according to claim 1 , wherein the second member of the lower body member has a region that forms a flat surface so as to facilitate installation of the electrical transition fitting adjacent a flat surface.
3. The electrical transition fitting according to claim 2 , wherein the at least one slot is formed in a rim segment on the second end of the second member of the lower body member.
4. The electrical transition fitting according to claim 1 , wherein the at least one slot is formed in a rim segment on the second end of the second member of the lower body member.
5. The electrical transition fitting according to claim 1 , wherein the first member of the lower body member includes a threaded bore passing therethrough dimensioned for receipt of a fastener so as to secure an electrical conduit to said first member.
6. The electrical transition fitting according to claim 5 , wherein the first member of the lower body member has an inner rim that acts as a stop to an electrical conduit positioned within the first member.
7. The electrical transition fitting according to claim 1 , wherein each inner locking device comprises a pair of arms extending inwardly from an inner surface of the inner locking device, the arms configured to secure and electrically bond to an outer surface of a metal clad or armored clad cable.
8. The electrical transition fitting according to claim 1 , wherein the second member of the lower body member has a generally frustoconical shape.
9. The electrical transition fitting according to claim 8 , wherein N=3.
10. The electrical transition fitting according to claim 9 , wherein the second member of the lower body member has a region that forms a flat surface so as to facilitate installation of the electrical transition fitting adjacent a flat surface.
11. The electrical transition fitting according to claim 1 , wherein the plate of the upper body member has N openings with inwardly extending rims each rim positioned about one of the N bores and wherein each plastic insulator has a radially extending rim at one end and radially projecting flexible fingers so as to capture the insulator between said radially extending rim, one of the N inwardly extending rims, and said radially projecting fingers.
12. The electrical transition fitting according to claim 1 , wherein the first member of the lower body member includes threads positioned on the outer surface thereof to secure installation of the electrical transition fitting through a knockout hole of an electrical panel box or the like by securement of a locknut thereto.
13. The electrical transition fitting according to claim 1 , wherein each of the N plastic insulators has an inner end that acts as a stop to a metal clad or armored clad cable when inserted into a bore of the electrical transition fitting.
14. The electrical transition fitting according to claim 1 , wherein the first member of the lower body member has an inner rim that acts as a stop to an electrical conduit positioned within the first member.