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Old 04-20-2020, 07:39 PM   #12
jetskier
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Join Date: Aug 2018
Location: Minden - NV
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M.O.C. #22360
Quote:
Originally Posted by willoco View Post
Not really an accurate statement. The gauge of the wiring limits the amperage.

Mine looks like they used 10 awg wiring (maybe) That's good for 30 amps.
Panels are rated for maximum amperage, 100w panels are usually around 5A.

Let's use an imaginary panel that's rated for 5A and and 10V. (Easy math)

I could run 4 panels in parallel and get 20 amps at 10V, or I could run 4 panels in serial and get 5 amps at 40v.

Here's a decent overview of wire sizing:
https://www.windynation.com/jzv/inf/...ight-wire-size

cheers.

I've posted this before, but I have replaced the Janoni controller with this controller capable of 150V/85A max. You can see the 10ga wire from the panels. It operates at peak summer sun at around 48-54V @ 17-18A. Solar panels are 855W total (factory Jaboni 265W + 160W run in series and another 270W + 160W series run parallel to the others). Each panel puts out around 8.6-8.7A. Larger panels output 31V while the smaller panels only produce 23V. The display reported around 760w when I turned on enough 12V devices and the inverter to draw down the system.


The 85A limit of the controller is the feed to the batteries. I ran 2 ga for this. The factory Jaboni is a 100/30 controller. I repurposed it in my wife's "Burner" trailer.
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