"The only UL Listed Connector that will insure grounding electrode condustor installations are code compliant!!!
All Service rated Panel boards, Pad Mount and Dry Type Transformer Installations are NOT being installed meeting the minimum NEC requirements!!
The Kenny Clamp is the ONLY UL Listed connector for bonding and grounding of electrode conductors in panel boards, Pad Mount, Dry type Transformers, metallic raceways and enclosures.
Install Kenny Clamp through a ½” Knockout with paint removed, tighten the steel locknut, insert grounding electrode conductor through the Kenny Clamp, and tighten the compression nut."
I guess that would fine in regards to using the 1/2" KO for the entrance. But the manufacturer provided a 1/4" opening that must be knocked out in the bottom or top of the panel next to the SE KO's location for the purpose of the GEC per their intentions.
Now I like the looks of that clamp for entering into 1/2" KO's.....great stuff....but they are streaching it on the claims and code references.
Until the manufacturers stop providing this opening...chances are it will always be used and meet compliance as the manufacturer intends.
