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featherliteCT1 wrote:looks great!
flboy wrote:Not good! Just doing some preventative maintenance and inspections today on the CTC roof. Going to fix this today and use something to coat and protect these connections. I am thinking I'll use the same stuff I use one battery terminals or just some dialectic grease.
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WoodSmith wrote:Don, While looking at this picture today I noticed that the two screws that go through the plastic box are very corroded. Are they steel screws? It looks like they go into the aluminum panel frames. I wonder if these are the route that the corrosion takes to enter the box? The dissimilar metals are probably exposed to the open environment under the solar panel, allowing the screw head inside the box to be a catalyst and get things oxidizing in there. Replacing those two fasteners with aluminum screws or nylon bolts might be a fairly simple solution.
I can't tell what you replaced them with after your maintenance.
flboy wrote:I think the screws are steel. When I open up to check in a month or so, I will replace with an aluminum or nylon screw. Not much strength required to hold. Can't hurt in any case and I really am clueless on the source. This would be a great experiment. :-)
I did not replace those screws. I just put them back in.
Thank you for comment. Certainly appreciate tjat.
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McDave wrote:I believe electrolysis only takes place with DC. The electrolyte could just be the salt air, or condensation, or both. Also the screws attaching the box to the panel may be an issue. You might give thought to separating the Pos. and Neg. in different boxes.
McDave
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