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Old 06-24-2020, 03:13 PM   #1
Sharko
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Possibilities for adding solar panel

I have a legacy version 2020 3930FB. It has factory 265W solar panel and 30 amp controller (not sure, monitor says 30amp).
I wanted to ask if I can ADD panels, do I need to change the wiring to panel wires?. I was hoping to had 3 panels for a total of 4. Do I need to change controller also?
I have 2 6 volt but planning on adding 2 more.
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Old 06-24-2020, 03:55 PM   #2
Tom N OH
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265w/12volts=22amps. Your controller will need to be upgraded to handle any additional panels. 4 panels x 265w=1060w total. 1060w/12volts=88amps. Iíd go with a 100amp controller at a minimum. Youíll never get a true 88 amps out of your panels because they arenít 100% efficient, but you want some margin of safety. More batteries is good as long as the extra weight isnít an issue.
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Old 06-24-2020, 04:02 PM   #3
Sharko
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Thanks. How or who can I find out the max capacity the wiring can handle from the panel.
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Old 06-24-2020, 05:11 PM   #4
PNW Fireguy
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You can add more panels and here are the things you need to be mindful of:
the factory wiring connecting the PV array and the charge controller are likley #10 AWG. It's currrent limit is 30 amps. You should add like panels as the existing. The panels need to be wired in series to keep the current within the 30 amp limitation above. Verfiy the voltage limit of your charge controller and confirm the cumulitve Vmp of all your panels do not surpass the charger's rated voltage.
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Old 08-04-2020, 01:36 PM   #5
Lakelife
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I have the factory 265W Solar Package as well on my 2020 Legacy. Here is what Jaboni, the company that makes the solar components, told me. "Adam you can add one additional 265W panel before you exceed the limits of the factory components. If you wire them in series." I plan on adding the exact same panel and 3 battle born G2 batteries for a 300ahs. I feel this is more than adequate for my boondocking needs.

On a side note I also plan on switching out the hot water heater for a Truma on demand that runs strictly off of propane.

If I want AC i'll simply run the generator. I felt like the super flex option wasn't as nimble as I wanted based on the fact that it eliminated the chance to have a on board generator.

Just my thoughts.
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Old 08-04-2020, 01:46 PM   #6
brooks340
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Just check the spec sheet for the panel you have installed and on the controller. I'm guessing it's putting out about 10A at approx. 23V. So if you wire all 4 panels in series you'd have a 92V 10A total output. Depending on the maximum voltage for your controller you will likely be fine, but you really need to check the specs on the panels and on the controller to be sure. The 10 gauge wire should be fine for that current rating, assuming you wire them in series.
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Old 08-04-2020, 02:24 PM   #7
Sharko
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Quote:
Originally Posted by Lakelife View Post
I have the factory 265W Solar Package as well on my 2020 Legacy. Here is what Jaboni, the company that makes the solar components, told me. "Adam you can add one additional 265W panel before you exceed the limits of the factory components. If you wire them in series." I plan on adding the exact same panel and 3 battle born G2 batteries for a 300ahs. I feel this is more than adequate for my boondocking needs.

On a side note I also plan on switching out the hot water heater for a Truma on demand that runs strictly off of propane.

If I want AC i'll simply run the generator. I felt like the super flex option wasn't as nimble as I wanted based on the fact that it eliminated the chance to have a on board generator.

Just my thoughts.
Thank you. All.
Lakelife, I like the idea of water heater. Of course my unit is in for repairs so I cannot verify but I thought you could change through panel to only use propane.
Also, are you buying panels through manufacturer? If so do you have contact info For? For installing i was concerned if placement was a concern. For instance, screwing into anywhere or the need for support by screwing into joists. Wiring should be cake just spicing it in. (series)
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