[RE-wrenches] Plastic washers

[Starlight Solar Power Systems]

One thing I have noticed is that many rack materials are a mixture of aluminum and other metals. I found out when trying to weld the material. It would be good to know just how dissimilar stainless is compared to the rack metal.

Jay, I would ask them what good is the insulator if the bolt/screw still contacts the metal of both through the bolt touching each hole?

Thank you,

Larry


On Jan 27, 2016, at 7:36 AM, Conrad Geyser <conradg at cape.com> wrote:

Jay,

I would suggest that he has a point, that the dissimilar metals do have a reaction.  But that the reaction is self limiting and that stainless fasteners with aluminum are used in marine applications albeit only with anodized aluminum.  Or say fine and invoice accordingly for the plastic washers.

Conrad
Cotuit Solar




Conrad Geyser, Principal
Cotuit Solar LLC
508-428-8442

On Wed, Jan 27, 2016 at 8:02 AM, Jason Szumlanski <jason at floridasolardesigngroup.com <mailto:jason at floridasolardesigngroup.com>> wrote:
Another engineer, eh?

I'd say no... Tell him to find another installer. 50 million Elvis fans, I mean PV installations, can't be wrong.

Ask him if he brings his own scissors to the hairdresser? That's my favorite line.


Jason Szumlanski


On Wed, Jan 27, 2016 at 12:37 AM, Jay <jay.peltz at gmail.com <mailto:jay.peltz at gmail.com>> wrote:
Hi all

I've got a client who insists on "plastic " ( synthetic) washers between SS washers and the aluminum racking and modules.

I'm tried every angle to assure him it's not a problem to no effect.

So anybody have any recommendations about type, material, and where to buy?

Thanks

Jay
Peltz power.



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