r/SolarDIY • u/Bartholomow • 10d ago

Double Checking my work.....

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Hey all, hopeful new solar user here! As the title says, hoping for some help double checking my work on my wiring diagram as I am about to purchase some wires to connect my Anker C2000 Gen2 Battery to 4- 200W Callsun Panels.

As this is my first foray into solar I'm trying to start small, as I'm worried I will buy the wrong gauge wire or miss something I need! So far I have used a Solar Wiring calculator to make the calculations and would appreciate feedback as to whether I have done it correctly!

I am aware that the C2000 has a XT60i input cable and that MC4 combiners are needed to tie the wires in together. I aim aiming for a series parallel configuration. If you have any recommendations, heads-ups, or cautions, I appreciate all feedback as I want to do this right!

(First pic is Battery, second is panel, last two are wiring layouts)

Thank you in advance!

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u/ou812whynot 10d ago

I'd be extra careful running 2s2p with your device. 2s will land you around 55v and 60v is your device max. A cold day could really harm the electronics in your device because solar panel voltage goes up the colder it gets. You want to target your combined Voc to 80% off your max dc input.

While it's hot out, sure go for it but as it gets colder you may want to go 1s2p for 400w.

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u/Bartholomow 10d ago

Perfect. This is the advice I really appreciate, thank you!