Good question about the end cuts, which would definitely rust if not
painted - I'll check tomorrow.
Regards,
Gary Willett, PE
Icarus Solar Services LLC
NABCEP Certified Solar PV Installer
g...@icarussolarservices.com
<mailto:g...@icarussolarservices.com><mailto:g...@icarussolarservices.com>
On 7/13/2011 12:11 AM, Kent Osterberg wrote:
Gary,
Zinc (galvanizing) is more anodic than aluminum so it is protective of
the aluminum just as it is of the steel in the Unistrut. As long as
the installation is in a location that doesn't routinely have high
humidity, the Unistrut should last nearly as long as it normally
would. Are end cuts of the Unistrut painted with galvanizing or
stainless paint?
Kent Osterberg
Blue Mountain Solar, Inc.
Gary Willett wrote:
It was brought to my attention that I had an error in my original
post. Here's the corrected text:
Fellow Wrenches:
I am involved in the commissioning of a 300kw parking structure PV
system and have a concern about possible galvanic action between the
aluminum module frames and the stainless GALVANIZED steel uni-strut.
The installation contractor attached the PV modules using a WEEB-like
stainless steel top-mounted clamp (to pierce the top of the PV
frame). A stainless steel bolt connects the clamp to the channel nut.
The bottom of the PV module is resting on the galvanized uni-strut.
Should there also be a WEEB-WMC assembly between the PV module and
the uni-strut?
Anyone have any experience where direct contact of these dissimilar
metals became an issue over time?
--
Regards,
Gary Willett, PE
Icarus Solar Services LLC
NABCEP Certified Solar PV Installer
g...@icarussolarservices.com <mailto:g...@icarussolarservices.com>
On 7/12/2011 5:23 PM, Gary Willett wrote:
Fellow Wrenches:
I am involved in the commissioning of a 300kw parking structure PV
system and have a concern about possible galvanic action between the
aluminum module frames and the stainless steel uni-strut.
The installation contractor attached the PV modules using a
WEEB-like stainless steel top-mounted clamp (to pierce the top of
the PV frame). A stainless steel bolt connects the clamp to the
channel nut. The bottom of the PV module is resting on the
galvanized uni-strut.
Should there also be a WEEB-WMC assembly between the PV module and
the uni-strut?
Anyone have any experience where direct contact of these dissimilar
metals became an issue over time?
--
Regards,
Gary Willett, PE
Icarus Solar Services LLC
NABCEP Certified Solar PV Installer
g...@icarussolarservices.com <mailto:g...@icarussolarservices.com>
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