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Kenny Clamp

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Greg1707

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Location
Alexandria, VA
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Business owner Electrical contractor
Our AHJ is now requiring the use of a "kenny clamp" for GEC. What alternative products are available? Also, if there are two GECs (water bond, ground rods) then I assume two kenny clamps are required?
 
Besoeker3

Besoeker3

Senior Member
Location
UK
Occupation
Retired Electrical Engineer
Greg1707 said:
Our AHJ is now requiring the use of a "kenny clamp" for GEC. What alternative products are available? Also, if there are two GECs (water bond, ground rods) then I assume two kenny clamps are required?
Click to expand...
What are they?
 
roger

roger

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Location
Fl
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There is no reason to use a clamp for a GEC except to line the manufacturers pockets, I know that doesn't help with an overzealous inspector or AHJ. Before I would buy a Kenny Clamp that has been deceptively marketed to be a code required item I would sleeve the GEC in PVC.
 
augie47

augie47

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Tennessee
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Besoeker3

Besoeker3

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Location
UK
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infinity

infinity

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New Jersey
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I agree with Roger they are not required by the NEC. If you use them then it has to be with the listing of the Kenny clamp which tells you the size and number of conductors permitted.
 
augie47

augie47

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Location
Tennessee
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State Electrical Inspector (Retired)
I've never used a Kenny Clamp but from the data sheet it appears you might be able to use one at the end of a metallic conduit to satisfy 250.64 (E) without a bond bushing/bond jumper.
 
Little Bill

Little Bill

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Location
Tennessee NEC:2017
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Semi-Retired Electrician
Besoeker3 said:
I'm an ignorant Brit but what is that..........?
Click to expand...
The GEC (grounding electrode conductor) from the system grounding comes out of the meter or panel. We are required to provide a way for utilities to attach their ground to the system ground. The item shown allows the GEC to go through it and is clamped by a screw. The other screws are ports for other ground wires to connect to. It is called an inner system bonding bridge.
 
tom baker

tom baker

First Chief Moderator & NEC Expert
Staff member
Location
Bremerton, Washington
Occupation
Master Electrician
roger said:
There is no reason to use a clamp for a GEC except to line the manufacturers pockets, I know that doesn't help with an overzealous inspector or AHJ. Before I would buy a Kenny Clamp that has been deceptively marketed to be a code required item I would sleeve the GEC in PVC.
Click to expand...
This issue with the Kenny Clamp has come up before, The general consensus here is that it’s not required.
 
Besoeker3

Besoeker3

Senior Member
Location
UK
Occupation
Retired Electrical Engineer
Little Bill said:
The GEC (grounding electrode conductor) from the system grounding comes out of the meter or panel. We are required to provide a way for utilities to attach their ground to the system ground. The item shown allows the GEC to go through it and is clamped by a screw. The other screws are ports for other ground wires to connect to. It is called an inner system bonding bridge.
Click to expand...
Thank you, Sir!
 
Dennis Alwon

Dennis Alwon

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Staff member
Location
Chapel Hill, NC
Occupation
Retired Electrical Contractor
Didn't we run into this before with an inspector making the electricians use kenny clamps. Probably the same guy who got fired from his last job and ended up where the op lives. hahaha
 
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