Gregory's ServerReplaced half of our solar wiring today(first installed in 2016), will replace other half tomorrow. MC4 connectors... *giant sigh* aren't waterproof. It's ALL bad.
Honestly, electricity on boats is kind of ridiculous :angry_laugh:
#theBoatyard
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@rek The actual mating connection (where the orange o-ring is) looks pretty solid and I don't have any reason to doubt it. I suspect most of the water intrusion in MC4's happens from the cable side. Those spiral silicone threaded crimp mechanisms are sketchy as. I'm going to seal mine with sealant once I have final layout organized.