diy solar

diy solar

Best way to make what i have work. Need ideas.

Ok so I ordered stuff on Amazon. It's impossible to find pv wire pairs at the price santan solar has on Amazon. And santan uses usa made wire. I also noticed that there's a new version of the epever 40amp. Called the Xtra. Much better screen. Bummer finding out now after 2 new older ones.
I ordered a few branch connectors and some more pv wire for a 3rd cc.
I really and just doing this as I go along. I dont have a set in stone plan.
So I thing the other 4 240w panels will go on the other 40a cc in 2S2P. I wonder if I'm over paneling still ? ? or if 60amp cc could squeeze more out?
Using ohms law theres no free meal but I might not be doing this right.
8 240w panels 37.2v ocv 7.89amps each= 1920w 62.12 amps depending on how you wire it up I wonder if I can get much more than the 62 amps using MPPTs. Even if I did something crazy like parallel 8 panels I would still have 37.2 V or around 30 V for the charge controller to work with and bring down to 14.4 so there would be some amps converted there but I have no idea how much.
I'm just trying to figure out how to extract the most possible out of this situationScreenshot_20220629-023406_Amazon Shopping.jpgScreenshot_20220629-024116_Opera.jpg
 
More poor weather. Made some adjustments and got my shunt meter inline. Now I dont need to use clamp meter to see what the inverter load on batteries are. I hooked up the 3 deep cycle batteries again. I switched over the 6000btu ac for the 5000btu. Big difference. Like 50amps instead of 80amps. 20220629_171530.jpg20220629_171515.jpg20220629_133911.jpg
 
So I returned 2 harbor freight panels so far.
I have 8 santan 240 panels .each epever is on 4 panels 2s2p. 960w /14.4v is 66.66amps. The entire system is theoretically capable of 133.333amps. So I'm losing a potential of 26 amp per array x2 =52amps that my two 40amp charge controller can't supply to load.
I want to add another 5000btu ac unit. One now draws 45-52amps. I should be able to do that with the right charge controller. I might add a few more panels if I need to. What charge controller or controllers would help me reach my goal? Anyone?
 
want to add another 5000btu ac unit
That’s adding up to where 24V is looking more attractive. Startup amps is an area to consider.
The 60A Epever takes 150V and will work with 12- or 24V iirc
So I'm losing a potential of 26 amp per array x2 =52amps that my two 40amp charge controller can't supply to load.
the potential may never actually occur- or are you seeing actually 40A output?

You’re growing this plan so fast that scaling up is more expensive per time.

There’s an MPPSolar 5000W? AIO unit that might make sense for you. You leapt from harbour freicht to 5000W :)
 
That’s adding up to where 24V is looking more attractive. Startup amps is an area to consider.
The 60A Epever takes 150V and will work with 12- or 24V iirc

the potential may never actually occur- or are you seeing actually 40A output?

You’re growing this plan so fast that scaling up is more expensive per time.

There’s an MPPSolar 5000W? AIO unit that might make sense for you. You leapt from harbour freicht to 5000W :)
The cc will do 40amps each under heavy load. There's definitely more amps on the table.
The 60amp epever was a consideration till I realized I could have 2 40s for the same price. I'm past that now. I need 100 to 200 amps lol ? ? ? ?
I still have 4 hobo fright panels but the used cc died so I can't use them now.
Currently I'm comparing 4 panels in parallel on one cc and 4 in 2s2p on the other to see how they perform. So far seems even.
 
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