[RE-wrenches] mixing aluminum and galvanized steel

[penobscotsolar at midmaine.com]

We use ss anchor (L) bolts when we need to bolt to pillars. Remember to
use an anti seize compound when installing initially.

Daryl



> This is an amazingly timely post for me!  I was just thinking of asking
> the
> same question since i have a couple of ground mount installs coming up
> with
> concrete pillars/galvanized anchor bolts/aluminum channel base.  I notice
> that DPW for example specs galvanized pipes to be attached with u-bolts to
> their aluminum racking in their LGM racks.
>
> Anxiously awaiting the collective wisdom...
>
> On Wed, Oct 5, 2011 at 11:23 AM, Jeff Yago <jryago at dtisolar.com> wrote:
>
>> 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
>>
>>
>>
>
>
> --
> Shine On!
>
> Kris Schmid
> Legacy Solar, LLC
> 864 Clam Falls Trail
> Frederic, WI 54837
> www.legacysolar.com
> 715-653-4295
> NABCEP Certified PV Installer
> BSEE
> _______________________________________________
> 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
>
>