From the '99 NEC (The current here in CA)
820-40 (b) 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 Section 250-50
b. The grounded interior metal water piping system as covered in Section 250-104(a)
c. The power service accessible means external to enclosures as covered in Section 250-92(b)
d. The metallic power service raceway
e. The service equipment enclosure
f. The grounding electrode conductor or the grounding electrode conductor metal enclosure, or
g. To the grounding conductor or to the grounding electrode of a building or structure disconnecting means that is grounded to an electrode as covered in Section 250-32; or....
Sounds good so far, but 250-70 doesn't like that clamp.
3. For indoor telecommunications purposes only, a listed sheet metal strap-type ground clamp having a rigid metal base that seats on the electrode and having a strap of such material and dimensions that it is not likely to stretch during or after installation.
The Cu connection to the Al hub also is, I believe, a bust of 110-14, dissimilar metals
Code Compliant? I think not
[This message has been edited by electure (edited 04-09-2005).]
