So I have never seen this and no luck finding it…when using EMT as a raceway for mechanical protection of a supplemental bonding conductor for ex. ½”C with a #6AWG ground I was looking to see if I could find a ground hub / choke to be used at each end of the conduit however everything I have found [oz/gedney, etc.] the hubs are threaded. Is it possible, common acceptable [UL?] to thread EMT, I could not find a similar product with set screw type connection? Any assistance is appreciated…
EMT Ground Hub??
- Thread starter Mike01
- Start date
- Status
- Location
- New Jersey
- Occupation
- Journeyman Electrician
You cannot thread EMT. You can do what Roger suggested but threading the connector into the hub is a technical violation. Like Roger for me it isn't a problem.
al hildenbrand
Senior Member
- Location
- Minnesota
- Occupation
- Electrical Contractor, Electrical Consultant, Electrical Engineer
I'm curious, is there a reason for you to not use a half inch bonding bushing on the threads of a set screw EMT connector?
I'm curious, is there a reason for you to not use a half inch bonding bushing on the threads of a set screw EMT connector?
The reason it was done in the photo was due the design engineer wanting more expensive components.
Roger
Mustang125
Member
- Location
- New Hampshire
Has anyone found or used hubs for 2" pipe with a 500mcm? i cant find anything bigger than 1 1/4" and job spec is to use 2" with 500mcm for the loop
LarryFine
Master Electrician Electric Contractor Richmond VA
- Location
- Henrico County, VA
- Occupation
- Electrical Contractor
Strap a short length of strut to the ends of the conduits and bolt a lug to the strut for a single conductor to bond them.
May not be approved usage, but would certainly be effective.
May not be approved usage, but would certainly be effective.
- Location
- New Jersey
- Occupation
- Journeyman Electrician
You could always do something like this:
LarryFine
Master Electrician Electric Contractor Richmond VA
- Location
- Henrico County, VA
- Occupation
- Electrical Contractor
I like! 
Carultch
Senior Member
- Location
- Massachusetts
Bridgeport makes threadless bonding bushings for use with EMT.
Split Bushing, Threadless, Insulated, Grounding, Zinc Die Cast, Size 1 Inch. 14-4 Grounding Lug
<p>The new SGBTL series are Listed to ground and bond both EMT and threadless Rigid conduits with one bushing!</p> <p>The 1"-2" trade sizes feature a patented, zinc die cast wedge design to fit on EMT, and then the wedge is removed for use with threadles
www.bptfittings.com
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