GEC entering panel

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Hacky

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Where the GEC enters a panel in a typical residential installation, it can enter thru one of the small holes (some would say those small holes are there for that purpose). Some people use a romex connector, but they are not listed for a single conductor.

I have someone telling me that the GEC needs to be bonded as it enters a panel. Their substantiation is that the existence of the Kenny clamp proves that it is required for use when a GEC enters the panel. Also, they are using 250.64(E) as substantiation.

I see 250.64(E) as only requiring the bonding when the enclosure is for the GEC, not when entering a panel. Can anyone confirm this?
 
I believe there was some substantiation by the manufacturer that the hole was there for the grounding electrode conductor.
 
Dennis Alwon said:
I believe there was some substantiation by the manufacturer that the hole was there for the grounding electrode conductor.
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Do you know where I can find it?

Also, what do you think about 250.64(E)? That is only talking about an enclosure for​ a GEC and not a panel that it enters, correct?
 
Hacky said:
Do you know where I can find it?

Also, what do you think about 250.64(E)? That is only talking about an enclosure for​ a GEC and not a panel that it enters, correct?
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There was a thread that had this noted on a panel enclosure but it was a long time ago, you are correct about 250.64(E), it is referring to raceways and wireways.

Roger
 
I run a bare GEC thru a 7/8 knock out with a plastic grommet. No need to connect it to the box on its way to the ground bar which is connected to the box.
If in flex conduit, I use a metal flex connector.
 
Hacky said:
Where the GEC enters a panel in a typical residential installation, it can enter thru one of the small holes (some would say those small holes are there for that purpose). Some people use a romex connector, but they are not listed for a single conductor.

I have someone telling me that the GEC needs to be bonded as it enters a panel. Their substantiation is that the existence of the Kenny clamp proves that it is required for use when a GEC enters the panel. Also, they are using 250.64(E) as substantiation.

I see 250.64(E) as only requiring the bonding when the enclosure is for the GEC, not when entering a panel. Can anyone confirm this?
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Kenny clamps are not required, just use the small KO.
 
As previously mentioned several times, the Kenny clamp is not required to secure ground wires. The small holes in the tops of breaker panels are an acceptable means of entry for water main and ground rod wires provided they are properly secured before they enter the panel. if you're not satisfied with the answers you receive here contact the Code Assistance Unit at the NJ DCA :

http://www.nj.gov/dca/divisions/codes/offices/codeassistance.html

In addition I would like to add that using one or two of the connection devices shown takes up knock-out spaces that may be necessary for branch circuit wiring, especially on a service upgrade where a breaker panel is flush mounted in a wall.
 
Goldstar, the issue isnt about the Kenny clamp as much as it is about that code article that I mentioned. I personally agree with everyone here. But the problem is that the two extremely amateur people that I am dealing with are citing 250.64E and maintain that it also includes panels. So I wanted to speak to that article directly.
 
Hacky said:
Goldstar, the issue isnt about the Kenny clamp as much as it is about that code article that I mentioned. I personally agree with everyone here. But the problem is that the two extremely amateur people that I am dealing with are citing 250.64E and maintain that it also includes panels. So I wanted to speak to that article directly.
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As Goldstar stated if the inspector doesn't get it right then contact the code assistance unit of the DCA. This isn't a gray area that's open to interpretation.
 
I'm posting the section as it appears in the 2014 NEC so that we all don't have to keep referring to our Code books :

250.64 Grounding Electrode Conductor Installation.
Grounding electrode conductors at the service, at each building or structure where supplied by a feeder(s) or branch circuit(s), or at a separately derived system shall be installed as specified in 250.64(A) through (F).

(E) Raceways and Enclosures for Grounding ElectrodeConductors.

(1) General. Ferrous metal raceways and enclosures for grounding electrode conductors shall be electrically continuous from the point of attachment to cabinets or equipment to the grounding electrode and shall be securely fastened to the ground clamp or fitting. Ferrous metal raceways and enclosures shall be bonded at each end of the raceway or enclosure to the grounding electrode or grounding electrode conductor. Nonferrous metal raceways and enclosures shall not be required to be electrically continuous.

(2) Methods. Bonding shall be in compliance with 250.92(B) and ensured by one of the methods in 250.92(B)(2) through (B)(4).

(3) Size. The bonding jumper for a grounding electrode conductor raceway or cable armor shall be the same size as, or larger than, the enclosed grounding electrode conductor.

(4) Wiring Methods. If a raceway is used as protection for a grounding electrode conductor, the installation shall comply with the requirements of the appropriate raceway article.
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What part are you having heartburn with ?
 
goldstar said:
What part are you having heartburn with ?
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Why are you being so nasty?

I posted twice that it’s not me who has a problem with the article, it’s other people and I wanted a reference to show them.

I don’t have any heartburn nor do I need to be spoken to like that.
 
Sorry if I came across like that. It was not my intention. Did you want to discuss this any further or should we just get past it ?
 
Hacky said:
And just to confirm, 250.64(E) is not ​talking about when a GEC enters a panel, correct?
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Correct, 250.64(E) is simply requiring all ferrous raceways enclosing the GEC to be in parallel with the GEC, where it enters a panel has nothing to do with the theory behind it or the reason for the code/rule.

Roger
 
roger said:
Correct, 250.64(E) is simply requiring all ferrous raceways enclosing the GEC to be in parallel with the GEC, where it enters a panel has nothing to do with the theory behind it or the reason for the code/rule.

Roger
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Perfect, thank you Roger.
 
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