To prevent yellowing and ensure optimal performance, the author suggests protecting the outdoor unit from sun exposure, removing filters and masking around the area, wiping down with soap and water, and using a scotch brite scuff pad to scrub the plastic.
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The most common reason for yellow solar panels is because of a chemical reaction causing acetic acid to form. In extremely cheap budget panels, certain chemicals used to clean the panels' glass, even in manufacturing, react with the chemicals in the cells.
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All you have to do is connect the equipment grounding conductor to one rail in each row, allowing all metal parts to bond to the grounding conductor. Your installation manual should include a solar panel grounding diagram that shows the bonding points at each solar panel .
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