Ufer grounds (was: aluminum in concrete) [RE-wrenches]

[Phil Undercuffler, Positive Energy]

Our local AHJ wants to see the three part "J hub" grounding connectors.
Although Acorn clamp type connectors have a listing for connection to rebar,
he feels strongly that connecting copper directly to steel is a really bad
idea, and I don't disagree.  Separating two with bronze seems to work in the
long haul.

Also, we don't embed our ufer connection here--the rebar must stick up out
of the slab (usually in the vicinity of the panel if your are nice to your
concrete sub) and a plaster ring is set in the drywall to provide access to
the clamp to allow inspection.


----- Original Message ----- 
From: "Kurt Albershardt" <info at es-ee.com>
To: <RE-wrenches at topica.com>
Sent: Tuesday, November 04, 2003 9:33 AM
Subject: RE: Ufer grounds (was: aluminum in concrete) [RE-wrenches]


> --On Monday, November 03, 2003 2:08 PM -0800
mlafferty at universalenergies.com wrote:
> >
> > Don't ask me why it's OK to pour a bare copper wire into a footing
> > for a UFER ground.
>
> I've usually seen them done with exposed rebar ends, hydraulically
cripmed/swaged to copper.

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