Concrete Cased Electrode

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mike9593

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sussex,nj
I have not done much residential work and I have a question regarding the concrete cased electrode. I will be placing 20' of bare # 4 CU in the lower third of the footing in an addition to a existing home. My question is when leaving the footing, do I need any special protection as it leaves the concrete? or do I just let it lay in the trench and bring it to the existing home and up the wall into the basement to the panel. And does it need to be tied to the rebar?

Thanks
 
If there is rebar of size that satisfies NEC, you should connect to it.
If there is not, then the 20' of #4 actually in the concrete should do fine by itself.
End it somewhere where you will be able to easily attach your GEC to it and no other trade will cut it off or cover it up.
If you attach a short copper to the buried rebar, I suspect it becomes a GEC itself and not part of the CEE, so you would need to make an irreversible connection to it.


Tapatalk!
 
It does not need to be tied to the rebar but if the rebar is 1/2" or larger and longer than 20' you can just use that and you won't need the 20' of copper in the footing.
 
GoldDigger said:
If you attach a short copper to the buried rebar, I suspect it becomes a GEC itself and not part of the CEE, so you would need to make an irreversible connection to it.
Click to expand...

The way the 2014 250.68(C) is written, either copper or rebar grounding electrode extensions are treated in the same fashion.
 
George Stolz said:
The way the 2014 250.68(C) is written, either copper or rebar grounding electrode extensions are treated in the same fashion.
Click to expand...

Has anyone heard that the rebar exiting the footing is a building code violation because of possible corrosion?
 
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