Where is Ground Clamps [RE-wrenches]

Ray Walters remotech at taosnm.com
Mon Apr 21 14:21:45 PDT 2003


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>Hi All;

We also use star washers to the mounting holes( never have used those 
little grounding holes), but we use plated braided copper ground strap 
(part #50401 from Del City Wire). Old installations with bare Cu show 
marked galvanic corosion of the Cu where it contacts the Al or SS washers.
Also, someone on this list suggested not using connectors, but instead 
seperating the braiding and putting the bolt right thru the middle. This 
works great. I had seen some crimp connectors and solid Cu strain harden 
and break loose due to seasonal adjustment.
I haven't measured impedance of our grounding systems, but it has been on 
our "to do" list for years. I'm sure the results will be scary.

Ray

>   I run a continuous 8 gauge solid CU to every panel down the one 
> continuous line created by any unused mounting hole set.
>
>
>Jeff C.
>Village Power Design

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