One by one the couplings joining the optimizers have failed, then melted. When it rained, the string would arc and the wires melted. The coupling's plastic deteriorated with salty wind, sun UV and rain. How about better couplings like those used for sprinkler wiring with grease caps. Those are always near water too. https://www.homedepot.com/p/Grease-Cap-Kit-for-Valves-4-Pack-57002/100052608... read more
Type: Residential Electric
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