A picture is worth a thousand words, (hopefully this will upload) Here's a traditional Ilsco Lug after less than 5 years near the ocean:
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IMHO, this is a galvanic reaction between the Cu, Al, and (our loser) the Lug which became the anode. No other corrosion was near this state of deterioration (frames, etc), and ALL the lugs looked like this on most systems I've seen over 3 years old on Maui. I've seen advanced Ilsco lug corrosion in New Mexico as well, so don't think you inland folks are safe. My fellow wrenches, this is NOT a good way to ground modules. The WEEB is not just faster to install, it is a vastly superior connection, and is now being accepted by most AHJs; its also stainless steel. Can we please continue to move forward into the 21st century, Sunpower? Your modules are the best, don't make us go backwards. R. Walters r...@solarray.com Solar Engineer On Sep 12, 2010, at 2:48 PM, Peter Parrish wrote: > We were informed a while ago that SunPower no longer "supports" their > version of the WEEB clip "due to UL testing changes." (unspecified) and > appears to have regressed to the ILSCO GBL-4DBT lugs with SS star washers, > lock washer, nut and specific torque requirements. > > Most people I have spoken with feel that the lug approach, though a > competent means of bonding PV modules, is awkward and time consuming, > compared to the WEEB clips. > > www.members.re-wrenches.org > >
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