CEE connection and extension

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edward said:
A violation of what section?

So, when you install GEC to a CEE then your run is continuous from the inside of the footing all the way to the panel? Unless, of course you can do irreversible connection. And you never have a CEE sticking out from the footing for a connection point to the GEC?
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2011 is pretty explicit about what is allowed to be part of a GEC.

see 250.64 (C).
 
edward said:
A violation of what section?

So, when you install GEC to a CEE then your run is continuous from the inside of the footing all the way to the panel? Unless, of course you can do irreversible connection. And you never have a CEE sticking out from the footing for a connection point to the GEC?
Click to expand...
Exactly.

Violation of 250.52(A)(3) [2011 NEC]. Note the paragraph starting "Metallic components..." is errantly indented to match conditions (1) and (2). It should be left aligned with the general statement of "(3)Concrete-Encased Electrode."
 
edward said:
A violation of what section?

So, when you install GEC to a CEE then your run is continuous from the inside of the footing all the way to the panel? Unless, of course you can do irreversible connection. And you never have a CEE sticking out from the footing for a connection point to the GEC?
Click to expand...


That is pretty much how I read it.

If you have a 4AWG or larger copper wire as the CEE then the CEE ends as soon as you leave concrete that meets requirements of 250.52(A)(3), and the remainder of the conductor from that point to the service or main disconnect for buildings supplied by a feeder is called GEC.

Same with the rebar, except for the fact that 250.62 says "The grounding electrode conductor shall be of copper, aluminum, or copper-clad aluminum." So if the rebar is no longer an electrode when it leaves the concrete encasement, then it must be an GEC, but GEC's are not allowed to be steel, plus you also violate 250.64(C) if you attach it to the copper, copper clad, or aluminum portion of GEC without irreversible methods listed for the purpose.
 
kwired said:
That is pretty much how I read it.

If you have a 4AWG or larger copper wire as the CEE then the CEE ends as soon as you leave concrete that meets requirements of 250.52(A)(3), and the remainder of the conductor from that point to the service or main disconnect for buildings supplied by a feeder is called GEC.

Same with the rebar, except for the fact that 250.62 says "The grounding electrode conductor shall be of copper, aluminum, or copper-clad aluminum." So if the rebar is no longer an electrode when it leaves the concrete encasement, then it must be an GEC, but GEC's are not allowed to be steel, plus you also violate 250.64(C) if you attach it to the copper, copper clad, or aluminum portion of GEC without irreversible methods listed for the purpose.
Click to expand...

This will be fixed in the 2014 to allow the steel as a connection point for the GEC. For now, it's goofy.
 
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