Is this an electrode?

Is this an electrode?

  • Yes

    Votes: 0 0.0%

  • No

    Votes: 1 50.0%

  • AHJ call

    Votes: 1 50.0%
  • Total voters
    2
jxofaltrds

jxofaltrds

Retired ESI
Location
Mike P. Columbus Ohio
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Creator
At the end of this video they show rebar to be installed. My question is - if this rebar meets the requirements - does it require being used? Yes, no, depends on the AHJ? The link is to a construction video.

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The building is new so it should already have a CEE.

From 250.52(A)(3)

If multiple concrete-encased electrodes are present at a building or structure, it shall be permissible to bond only one into the grounding electrode system.
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Not to mention they missed putting it in the footer.
 
ggunn said:
If rebar encased in concrete is an acceptable electrode (I don't know that it is) why wouldn't slab rebar be acceptable?
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It's not an electrode if it's not in the footer or foundation.


(3) Concrete-Encased Electrode​


A concrete-encased electrode shall consist of at least 6.0 m (20 ft) of either (1) or (2):
  1. One or more bare or zinc galvanized or other electrically conductive coated steel reinforcing bars or rods of not less than 13 mm (1/2 in.) in diameter, installed in one continuous 6.0 m (20 ft) length, or if in multiple pieces connected together by the usual steel tie wires, exothermic welding, welding, or other effective means to create a 6.0 m (20 ft) or greater length; or
  2. Bare copper conductor not smaller than 4 AWG
Metallic components shall be encased by at least 50 mm (2 in.) of concrete and shall be located horizontally within that portion of a concrete foundation or footing that is in direct contact with the earth or within vertical foundations or structural components or members that are in direct contact with the earth. If multiple concrete-encased electrodes are present at a building or structure, it shall be permissible to bond only one into the grounding electrode system.
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roger said:
It's not an electrode if it's not in the footer or foundation.
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OK, but the answer in #3 was "The rebar is for the slab so it isn't an electrode". Is a slab not the foundation?
 
Dennis Alwon said:
I*t is not a footer and that is what the code states.
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But Roger's quote from the code says, "Metallic components shall be encased by at least 50 mm (2 in.) of concrete and shall be located horizontally within that portion of a concrete foundation or footing that is in direct contact with the earth or within vertical foundations or structural components or members that are in direct contact with the earth." It doesn't say that it must be in the footer, only that the concrete must be in direct contact with the earth. Am I missing something?
 
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