Struggling with wire sizing, please help!

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  • KatInAVan
    Junior Member
    • Apr 2025
    • 1

    #1

    Struggling with wire sizing, please help!

    Hey y’all, I really hope someone can help me figure out what size wire I need for my 500w 15v solar panel system for my van. I have 2x 250w 15v solar panels, 2x 60a circuit breakers, a 60a MPPT charge controller, and a 2000w pure sine wave inverter,2x 200a fuses, a positive and negative buss bar, a shunt, a 250a switch and 2x 150ah lithium ion batteries.
    I think I need 10awg between the solar panels, a 60a circuit breaker and the MPPT charge controller, but I have no idea for any of the others. Can someone please help me? I’ve looked at so many wire sizing charts and they all say something different. Thanks for reading!
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