[RE-wrenches] mixing aluminum and galvanized steel

[Darryl Thayer]

I have used aluminum on galvanized for years, I have not had a problem.  I reciently went to repair a system that I installed 20 years ago, and it was fine.  If you have salt air run, but I have not had any problems.
Darryl
 
 
 
 

From: Jeff Yago <jryago at dtisolar.com>
To: 'RE-wrenches' <re-wrenches at lists.re-wrenches.org>
Sent: Wednesday, October 5, 2011 11:23 AM
Subject: Re: [RE-wrenches] mixing aluminum and galvanized steel


For years we have used standard mounting racks like UniRac rails bolted together with stainless-steel hardware.  On larger arrays this usually means bolting their extruded aluminum module rails to galvanized 3” pipe supports for ground mounted arrays.
 
We have recently received several “flags” during the engineering review process of our design documents on state funded projects stating all bolted connections between aluminum and galvanized steel will require neoprene washers to prevent corrosion.
 
Any of you run into this requirement or have had any problems?  The only issues we ever see with corrosion is mixing copper and aluminum such as where somebody used wrong type module frame ground connectors.
 
Jeff Yago
_______________________________________________
List sponsored by Home Power magazine

List Address: RE-wrenches at lists.re-wrenches.org

Options & settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org

List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org

List rules & etiquette:
www.re-wrenches.org/etiquette.htm

Check out participant bios:
www.members.re-wrenches.org
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org/attachments/20111005/295fa096/attachment-0004.html>