A transition fitting for achieving a rain-tight transition at the entry of photovoltaic cables with EMT. The transition fitting includes a fitting body with an internal bore, a grommet seated within the bore, a nut for tightening the grommet against the fitting body, a compression fitting and a grou
A transition fitting for achieving a rain-tight transition at the entry of photovoltaic cables with EMT. The transition fitting includes a fitting body with an internal bore, a grommet seated within the bore, a nut for tightening the grommet against the fitting body, a compression fitting and a ground lug extending from the nut. A plurality of bores extend partially through the grommet. Photovoltaic (PV) cables may be inserted within one or more of the bores in the grommet and the nut tightened upon the fitting body to form a rain-tight fit around the PV cables. The skins of the grommet remain intact in any unused bores to maintain a rain-tight seal on any unused bores. The transition fitting will maintain a rain-tight seal at the entry of PV cables to EMT. The ground lug provides a means of grounding the EMT to the transition fitting.
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1. A transition fitting for securing wires to electrical metal tubing (EMT), comprising: a fitting body including a leading end, a trailing end, and a bore;a grommet within said bore of said fitting body, said grommet having a leading face and a trailing end;a nut with an internally threaded bore;gr
1. A transition fitting for securing wires to electrical metal tubing (EMT), comprising: a fitting body including a leading end, a trailing end, and a bore;a grommet within said bore of said fitting body, said grommet having a leading face and a trailing end;a nut with an internally threaded bore;grounding means for grounding the wires to the EMT and the fitting body;one or more bores in said trailing end of said grommet; anda skin extending across said one or more bores at said leading face of said grommet. 2. A transition fitting for securing wires to electrical metal tubing (EMT), comprising: a fitting body including a leading end, a trailing end, and a bore;a grommet within said bore of said fitting body, said grommet having a leading face and a trailing end;a nut with an internally threaded bore;grounding means for grounding the wires to the EMT and the fitting body;gripping means on said grommet to prevent rotation of said grommet with respect to said fitting body; andsaid gripping means including an external facet on said trailing end of said grommet and an internal facet on said fitting body, whereby meshing of said internal facet on said fitting body with said external facet on said grommet locks rotation of said grommet with respect to said fitting body. 3. A transition fitting for securing wires to electrical metal tubing (EMT), comprising: a fitting body including a leading end, a trailing end, and a bore;a grommet within said bore of said fitting body, said grommet having a leading face and a trailing end;a nut with an internally threaded bore;grounding means for grounding the wires to the EMT and the fitting body;a ground lug on said nut;a post on said nut of said transition fitting, said post including a bore; anda fastener for securing said ground lug into said bore of said post. 4. The transition fitting of claim 3, further comprising a lug body on said ground lug, said lug body including a top arm, a bottom arm, and a grounding screw. 5. The transition fitting of claim 4, further comprising a channel on said lug body, said channel adapted to receive a ground wire for grounding the wires to the EMT, wherein said ground wire secured to said channel by said grounding screw. 6. The transition fitting of claim 5, further comprising: a flange on said fitting body; andsaid fitting body including an externally threaded leading end portion extending from said flange to said leading end of said fitting body for receiving said nut. 7. A transition fitting for securing wires to electrical metal tubing (EMT), comprising: a fitting body including a leading end, a trailing end, and a bore;a grommet within said bore of said fitting body, said grommet having a leading face and a trailing end;a nut with an internally threaded bore;grounding means for grounding the wires to the EMT and the fitting body;a trailing end portion on said fitting body; andinterior threads on said trailing end portion defining a socket in said trailing end portion, said socket of said trailing end portion adapted to accept attachment of the EMT therein. 8. A transition fitting for securing wires to electrical metal tubing (EMT), comprising: a fitting body including a leading end, a trailing end, and a bore;a grommet within said bore of said fitting body, said grommet having a leading face and a trailing end;a nut with an internally threaded bore;grounding means for grounding the wires to the EMT and the fitting body; anda compression fitting including a connector body having an inner bore, one or more compression rings within said inner bore, and a compression nut, wherein said connector body adapted to accept said trailing end of said fitting body. 9. The transition fitting of claim 8, wherein said one or more compression rings further comprises: a split ring, an intermediate ring, and a leading ring; andwherein said connector body further having a central flange with one or more flat edges for facilitating engagement of a tool,wherein tightening of said compression nut, said compression fitting urges said split ring, said intermediate ring and said leading ring to seal against an outer surface of said EMT.
Marik Gregory C. ; Burrough Lawrence ; Cole J. Lawrence ; Whitehead James H., Rotationally unrestrained grounding coupling for external grounding of fittings.
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