Connection to the Concrete Encased Electrode

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iwire said:
I don't know if it was good stuff but thanks. :smile:

At the very least it got some thinking going.

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CEE Rebar Stub Out? I don't think so
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I thought it was good stuff.
 
Dennis Alwon said:
From your other post
I assume you mean that the GEC stops at the point which the #4 exits the concrete.

Suppose I stub up a piece of rebar-- do I have to use a irreversible connection onto the rebar. I am thinking the grounding electrode can extend above the concrete and a #4 can continue with a split bolt or any approved splicing method.
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This has been a subject of great debate in the past. I don't know that in the past there was ever a concensus on when the CEE ends and the GEC begins. It has been common pratice in my area to see a short section of rebar stubbed up out of the foundation and clamped onto the GEC with a non-irreversible clamp. I have accepted this in the past and do not see this as a problem as long as the connection remains accessible.

I do agree with Bob. Per the NEC definition I don't think the rebar stub out of the foundation is really the CEE.

Chris
 
raider1 said:
It has been common pratice in my area to see a short section of rebar stubbed up out of the foundation and clamped onto the GEC with a non-irreversible clamp. I have accepted this in the past and do not see this as a problem as long as the connection remains accessible.
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I would think that since no electrodes require an irreversible GEC connection that the stub wouldn't require one either.
 
Any portion of a ground rod that is left not driven into the earth is not part of the electrode either, since the entire rod is required to be driven.
 
wbalsam1 said:
Any portion of a ground rod that is left not driven into the earth is not part of the electrode either, since the entire rod is required to be driven.
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The requirement is actually for 8' of the rod to be buried. Certainly a 10' rod could stick out the ground 24" and still qualify as an electrode.
 
raider1 said:
It has been common pratice in my area to see a short section of rebar stubbed up out of the foundation and clamped onto the GEC with a non-irreversible clamp. I have accepted this in the past and do not see this as a problem as long as the connection remains accessible.
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Chris....on side note, would you consider the GEC connection to the main bonding jumper located in the section of a service that is sealed by the POCO as accessible? My AHJ says "no". I say "yes" because it is accessible without damaging anything but a couple of POCO seals.
 
Let's revisit the picture and note that there's a piece of paper under the lower bolt of the ground assembly!
 
jwelectric said:
If they install two rods as outlined in 250.52(A)(5) and install a Grounding Electrode Conductor to the rods that is sized to 250.66(B) wouldn?t it be acceptable to install a bonding jumper from the rods to the tail left on the concrete encased electrode and connect with an ordinary split bolt as outlined in 250.53(C)?

Sounds like a simple fix to me!
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No one has said if this would work for the original post.

Well would it?

I added the red words from my original post for clarity
 
Originally Posted by jwelectric
If they install two rods as outlined in 250.52(A)(5) and install a Grounding Electrode Conductor to the rods that is sized to 250.66(B) wouldn?t it be acceptable to install a bonding jumper from the rods to the tail left on the concrete encased electrode and connect with an ordinary split bolt as outlined in 250.53(C)?

Sounds like a simple fix to me!
jwelectric said:
No one has said if this would work for the original post.

Well would it?

I added the red words from my original post for clarity
Click to expand...

When daisy-chaining bonding jumpers one has to be careful. Rods are permitted to have #6 cu yet CEE requires #4 cu. This #4 cu would not be permitted to reduce to #6. 250.64(F)
 
wbalsam1 said:
Originally Posted by jwelectric
If they install two rods as outlined in 250.52(A)(5) and install a Grounding Electrode Conductor to the rods that is sized to 250.66(B) wouldn?t it be acceptable to install a bonding jumper from the rods to the tail left on the concrete encased electrode and connect with an ordinary split bolt as outlined in 250.53(C)?

Sounds like a simple fix to me!


When daisy-chaining bonding jumpers one has to be careful. Rods are permitted to have #6 cu yet CEE requires #4 cu. This #4 cu would not be permitted to reduce to #6. 250.64(F)
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Yes I did say that the GEC to the rods was to be sized according to 250.66(B) which would be a #4 going to the rods and then on the the tail left for the CEE where a split bolt could be used.

Is this correct?
 
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