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 <[email protected]>
To: 'RE-wrenches' <[email protected]>
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
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