diy solar

diy solar

Another newbie starting in solar - looking for advice/tips

newbiebryan

New Member
Joined
Mar 14, 2021
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3
The newbie in me is planning to upgrade my solar setup on my Grand Design 320G toy hauler.

I want to learn and install the upgrade myself.

I have 1 190w panel from Go Power that was installed by the RV dealer. 12v panel, the controller gets ~24v off the panel. (I assume the panel is 2 12v internal panels sending down 24 volts? I want to buy 3 more 200w panels. Also, 12v with Voc of 24.3. Imp of 9.8a. (looking at the Rich Solar 200w 12v panels - LINK)

If I run the 4 in series, I should expect just under 97.2v and approx 10a to the controller? (under perfect sun conditions?) I have a Victron 100v/50a solar controller. I also have 2 100ah Lithium batteries in parallel.

Or, should I go with a series-parallel setup for ~48v and 20a?

Any help would be appreciated as I am just starting research for this upgrade.
 
New to this also the series parallel set up will be more shade tolerant. I plan on 4 210 watt panels 2s 2p for my 5th wheel
 
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