Non-metallic split bushing and method for preventing abrasion of electrical cables in pipe and conduit
A split bushing and method for protecting electrical cables from abrasion by the cut edges of pipe or electrical conduit, also known as electrical metal tubing or EMT. The split bushing includes a substantially ring-shaped body and two cable guides extending from the outer periphery. The bushing includes an end wall and a raised area on the end wall adjacent the split. An overlap extends from the raised area. The bushing includes two ends and two cable guides adjacent the split. After being attached to the end of an electrical conduit, a cable tie is extended through the cable guides and tightened to secure the split bushing tightly to the electrical conduit. The overlap ensures that the entire inner periphery of a conduit will be covered by the bushing when secured thereto.
1. A split bushing comprising:
a one-piece ring-shaped body including an end wall and an arcuate peripheral wall;
a split extending through said body and defining a first end and a second end on said body; and
a cable guide on each of said ends of said body, said cable guides extending from said arcuate peripheral wall on either side of said split.
2. The split bushing of claim 1 , including an overlap extending from said first end of said split bushing at the split.
3. The split bushing of claim 2 , wherein said overlap on said first end of said body extends across said end wall on said second end of said body.
4. The split bushing of claim 2 , including a raised area at said first end of said body, said overlap extends from said raised area.
5. The split bushing of claim 2 , wherein
said end wall of said body includes an arcuate inner periphery; and
an inner lip extends from said arcuate inner periphery.
6. The split bushing of claim 5 including a channel defined by said end wall, said arcuate peripheral wall, and said inner lip of said body.
7. The split bushing of claim 5 , wherein said inner lip includes a first thickened inner lip section at said first end of said body.
8. The split bushing of claim 7 , wherein said first thickened inner lip section includes a finger portion extending onto said overlap.
9. The split bushing of claim 8 , including a recess defined by said finger portion, said first end of said body, and said overlap.
10. The split bushing of claim 1 , including a second thickened inner lip section at said second end of said body.
11. The split bushing of claim 1 , including a gap between said first end and said second end of said body.
12. The split bushing of claim 1 including an opening in each of said cable guides.
13. The split bushing of claim 12 including a cable tie for securing said ends of said body together, said cable tie extending through said openings in said cable guides.
14. The split bushing of claim 1 including a brace extending between said arcuate peripheral wall and each of said cable guides.
15. The split bushing of claim 1 wherein each of said cable guides include a first leg and a second leg extending from said arcuate peripheral wall and an outer wall.
16. The split bushing of claim 15 including a lip extending from said outer wall of said cable guide.
17. The split bushing of claim 15 including sloped outer edges on said outer walls of said cable guides.
18. A method for preventing abrasion of electrical cables by the end of an electrical conduit, the method comprising:
providing a split bushing including a one-piece ring-shaped body having an end wall and an arcuate peripheral wall, a split extending through said body and defining a first end and a second end on said body, a channel defined by said end wall, said arcuate peripheral wall, and an inner lip on said body, a cable guide on each of said ends of said body, said cable guides extending from said arcuate peripheral wall, and openings in said cable guides;
pulling on opposing sides of said split bushing;
slipping said split bushing over said electrical cables;
pressing said split bushing onto the conduit until the end of the conduit is fully inserted within said channel of said split bushing;
inserting a cable tie through said openings of said cable guides; and
tightening said cable tie against said cable guides to secure said split bushing to said electrical conduit.
19. The method of claim 18 , including
providing an overlap extending from said first end of said body; and
pressing said split bushing together until said overlap on said first end overlaps said end wall on said second end of said split bushing.
20. A split bushing comprising:
a one-piece ring-shaped body including an end wall and an arcuate peripheral wall;
a split extending through said body and defining a first end and a second end on said body;
a cable guide on each of said ends of said body, said cable guides extending from said arcuate peripheral wall on either side of said split; and
an overlap extending from the end wall at said first end of said split bushing, said overlap adapted to overlap the end wall on said second end of said body upon closure of said ends.