- #CONCRETE ENCASED ELECTRODE PDF#
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Metal Underground Water Pipes under certain conditions.
#CONCRETE ENCASED ELECTRODE UPDATE#
UPDATE YOUR SUBSCRIPTION PREFERENCES: Subscribe or Unsubscribe from this list.Section 250.52 provides a list of what items can be used as a grounding electrode.
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#CONCRETE ENCASED ELECTRODE FULL#
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#CONCRETE ENCASED ELECTRODE PDF#
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#CONCRETE ENCASED ELECTRODE INSTALL#
It is not necessary to install any “made” electrodes such as a “ground ring”, “plate electrode” or “rod or pipe electrodes” where you have a metal underground water pipe and a concrete-encased electrode which will satisfy the supplemental electrode requirements of 250.53(D)(2).ĪBOUT CQD: The Code Question of the Day (CQD) is NECA and ELECTRICAL CONTRACTOR Magazine’s flagship National Electrical Code (NEC®) public forum for the industry, sponsored by EATON. So yes, if you have a metal underground water system and a foundation or footing “present” at the building or structure, the metal underground water piping system and a concrete-encased electrode using either the rebars or 20 ft of bare copper conductor as shown in 250.52(A)(3) must be bonded together and used as the grounding electrode system. The wording “if present” is new in the 2005 NEC and replaces the wording “if available” in the 2002 NEC. NEC 250.50 requires that the grounding electrode described in 250.52(A)(3), a concrete-encased electrode, if present, must be bonded to the grounding electrode system. NEC 250.52(A)(3) describes a concrete-encased electrode. This supplemental electrode must be of a type specified in 250.52(A)(2) through (A)(7). NEC 250.53(D)(2) requires a supplemental electrode where a metal underground water pipe is used as a grounding electrode. Hey Joe, I believe you have it essentially correct.
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