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#93282 05/11/05 09:37 PM
Joined: Mar 2001
Posts: 333
S
stamcon Offline OP
Member
Has there been changes made to 810-21(99NEC)Grounding Conductors-Receiving Stations in the 2002 or 2005 NEC?

steve


Steve
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#93283 05/15/05 08:15 PM
Joined: Feb 2005
Posts: 693
L
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(F) Electrode. The grounding conductor shall be connected as follows:

(1) To the nearest accessible location on the following:
a. The building or structure grounding electrode system as covered in 250.50
b. The grounded interior metal water piping systems, within 1.52 m (5 ft) from its point of entrance to the building, as covered in 250.52
c. The power service accessible means external to the building, as covered in 250.94

d. The metallic power service raceway
e. The service equipment enclosure, or
f. The grounding electrode conductor or the grounding electrode conductor metal enclosures; or

(2) If the building or structure served has no grounding means, as described in 810.21(F)(1), to any one of the individual electrodes described in 250.52; or

(3) If the building or structure served has no grounding means, as described in 810.21(F)(1) or (F)(2), to an effectively grounded metal structure or to any of the individual electrodes described in 250.52.

[This message has been edited by Larry Fine (edited 05-15-2005).]

Oops! The italicized parts are the only changes.
Oops again; the above is from the '02 NEC.

[This message has been edited by Larry Fine (edited 05-15-2005).]

[This message has been edited by Larry Fine (edited 05-15-2005).]


Larry Fine
Fine Electric Co.
fineelectricco.com

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