Is 10g Wire Safe for Parallel Solar Panel Connections?
Asked by SunnyDaze123
I'm hooking up three solar panels in parallel, each rated at 10.6A. This setup exceeds the 30A limit of 10g wire. I've heard that solar panels rarely hit their maximum amperage, so I'm wondering if it's safe to stick with the standard 10g branch connectors or if I should look for 8g wire instead.
Answers
If your solar controller isn’t maxed out on voltage, consider connecting the panels in series instead of parallel. It can help with the amperage concerns!
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Typically, 10g wire can handle 30A max in household settings, but it’s usually capped at 80% for continuous use, which is about 24A. If your environment helps keep the wire cool, and those maximums are rare, 10g could work just fine. Just keep an eye on the actual current!
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As long as your controller is limited to 30A, you just need a fuse rated a bit above that with adequate 30A cabling. If you're not using a controller limit, it might be better to go for thicker wires or switch to a series setup instead. Safety first!
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Why are you opting for a parallel connection anyway? Just curious if there's a specific reason.
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You're good to go with 10g. If you're still worried, you can always double up your 10g wires. Just give it some thought!
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SunnyDaze123: Thanks for the tip! I'll check if my controller allows for a series setup.