400W WindyNation system with missing parts and creative solution required

[MarigotRose]

Preamble configuration:
12V battery system
Navi bank = 4x Grade27 deep cycle 180RC
House bank = 2x 4D sized calcium maintenance free batteries 230RC
Engine bank = 1x Grade27 ignition battery
4 x 100w WindyNation flexi panels
Open circuit=21.6v - Max V = 17.8 - Max Current = 5.62A
WindyNation P30L 30A charge controller with Max input voltage of 48V

My story starts with two mistakes [emoji37]
1) I should have ordered 6 PV Y-connectors for running my 4 panels in parallel
2) The 4 that I ordered were picked incorrectly by the shipper so I got
3x MMF and 1x FFM ?!? (Pic attached)

My panels have an open circuit voltage of 21.6 volts and I was thinking of running two pairs of panels in series to make use of the parallel connectors that I have 1xMMF and 1xFFM until I can buy some more
My 30A charge controller can receive a max input voltage of 46V, but the only time I see the wiring diagram I'm thinking of is for a 24V charging system

I'm down the Exumas at the moment and can't really get anything shipped, so am a bit stuck for ideas until I get to a busier port

Will the 24V wiring option get me some much needed Amps into my 12V batteries?
Or do I run the risk of burning some thing out , or losing the ability to get current from the panels?

[JayH]

You won't burn anything out. Its common to run solar at a higher voltage than the bank. The controller supports the higher voltage and will step it down for the batteries.

If you're near Staniel Cay, then Watermakers Air can bring you parts.

[newhaul]

Before you hook anything up is the controller an mppt controller.or a pwm controller. After we know that I will be able to better assist you

[MarigotRose]

PWM controller - sorry I missed that bit off

[newhaul]

Ok so tor now hook up two panels both positives into o.e y connector and both negatives into the other then run wires to controller . If you do the 24volt wireing you will fry your battery bank. So hook up from the battery t ok the controller then to the panels . If you hook the panels to the controller before hooking up the battery you will dammage the controller that windy supplied.

[newhaul]

Here is an alternative splitter that I like to use in your situation with 4 panels.
1Pair MC4 Y /T Type Branch Connector Solar Panel Cable Adapter MMF FFM Pair IP67 | eBay

[MarigotRose]

Originally Posted by newhaul

Here is an alternative splitter that I like to use in your situation with 4 panels.
1Pair MC4 Y /T Type Branch Connector Solar Panel Cable Adapter MMF FFM Pair IP67 | eBay

That 4 splitter would have been perfect for what I need to do!!
Maybe I'll get them and switch out to tidy up a bit later down the line

In the mean time...it got ugly here!
I took to making my own Ys to try and stick to my original plan
Hope there isn't too much resistance in all that solder!
<fingers crossed>

[newhaul]

Should be fine. Just remember to wrap up the connections you solderd real well with electrical tape and.then if then if you have it a couple wraps with duct tape.