hi i have seen fast corrosion of copper on galvanized, it also seems as if once the galvanized is gone the steel underneath rusts very fast. I have had good stability of galvanized on aluminum (or anodized aluminum.
--- On Mon, 1/26/09, August Goers <aug...@luminalt.com> wrote: > From: August Goers <aug...@luminalt.com> > Subject: [RE-wrenches] Galvanic compatibility of commonly used solar materials > To: "'RE-wrenches'" <re-wrenches@lists.re-wrenches.org> > Date: Monday, January 26, 2009, 6:00 PM > Hi Wrenches, > > I'm wondering what types of experiences you folks have > with galvanic > corrosion. As we all know, racking and ground systems > commonly use copper, > aluminum, steel, etc. which may or may not be compatible > with each other. > There's the theory: > http://www.engineersedge.com/galvanic_capatability.htm > and then there's real life experience. > > I have first hand experience with aluminum lay in lugs used > to bond modules > corroding and turning to powder. We all know to use tin > coated copper lugs > for module and racking grounding. However, I see bare > copper ground wires > run over all sorts of different metals and I wonder what > issues might pop up > in the long haul. > > How well does bare copper hold up when it is touching > anodized aluminum? > What about copper and hot dipped strut? How do you run bare > ground wire when > you're connecting multiple arrays separated from each > other? Has anyone seen > issues arising between steel and aluminum racking parts? > > I'm looking forward to seeing what types of field > experiences you have seen. > > Best, > > August > > > > August Goers > > > Luminalt Energy Corporation > O: 415.564.7652 > M: 415.559.1525 > F: 650.244.9167 > www.luminalt.com > aug...@luminalt.com > > > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: RE-wrenches@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 _______________________________________________ List sponsored by Home Power magazine List Address: RE-wrenches@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
