dragnet:

are you not supposed to be doing a project? you should do some research, some of the questions you're asking shouldn't be asked by someone carrying out a project in power.

mctfopt:


Check diagram

Horlaarsco:


I have been carry out the research the connection problem that confused me is the inverter wouldnt want any issues with it thats why im asking

Horlaarsco:
The red and black is to its respective place on the battery right? While those small red black green to socket incase want to charge the battery with like power source

AM i right?

lexi28:


1. your battery terminals will be your bus bar

2. have you bought the cables you need? get appropriate cable lugs that are roughly tag size of your cable, less gaps in the cable lug, the better the contacts. (p.s do NOT attempt to solder the copper cables to the cable lugs).

3. cable lugs are the cable terminations you see on the follow come cables on the inverter.

4. attach cable lugs to ONE END of a pair of cables. strip 1cm of the cable, insert into a lug, and use a heavy duty crimping tool (or just smash flat with a hammer! local style). attempt to pull out the cable, it must stay firm. tape around the crimped lug up till just before hole in it.

5. mark one with cables you just crimped with red tape to designate the positive or use masking tape + marker pen.

6. screw in the stripped, uncrimped end of red positive wire above to the battery positive port on the charge controller( usually 3rd terminal from the left, if controller is facing you).

7. screw in stripped uncrimped end of the black negative cable from the pair you just lugged in step 4, to the negative port of the charge controller

8 connect the positive red wire from the inverter and the lugged end of the cable you just marked as positive to the +ve battery terminal.

9. connect the negative black wire from the inverter and the crimped end of the cable you marked as negative to the -ve battery terminal.
( there might be a small spark while doing this, do not be alarmed, it is okay).

10. your charge controller should light up by now and auto detect the battery voltage. red the controller manual for more info.

11. for connecting your 2nos 150w panels in parallel, if you have appropriate y-mc4 connectors, use them. otherwise, cut off the both PV +ve cables like 2" before the connectors and join both positive cables together.

12. repeat the same for both negative PV -ve cables. remember to join wires with a tight and strong bond. be generous with the electrical tape.


13. connect the stripped single +ve cable from your inverter to your controller PV +very terminal or to your PV breaker if you are using one. the cable from the other end of the breaker goes to the controller

14. the single negative from your parallel panels goes straight to your controller PV -ve port. after 1-2seconds the controller should give a reading on your panels. the battery voltage is 1st, then the ambient temperature, then the panel charging current. Your controller manual should give the rest info.

hope this helps you. any further questions, feel free to post them here. ask questions... easiest way to learn.

Horlaarsco:


The panels should be in parallel so as to still retain 12v voltage.. Its a 12v system

lexi28:


yes, both your inverter and batteries are 12v, charging source must be within range for the kind if controller you're using (pwm)

Horlaarsco:



I havent gotten the cables sizes

lexi28:


ideally, you are to get PV flex cables. they are of fine strands and bend easily. depending on the distance from which you are running your cables, this type if cable might be quite expensive.


so read your controller manual, what's the largest size of cable its terminals can admit. then buy the type of copper cables normally sold. try and avoid the chinko cables that have thicker insulations with smaller gauge of copper conductor in it.

I do not know how far your controller is from your panels, I would say use 10mm cable minimum to run the pair of wires from the parallel panels. 16mm would be better if your controller terminals will admit them and you can afford it.

16mm should be okay for the cables from your controller to your batteries. I am assuming they are close together, and about 4yards should do (2yards for +ve & 2 yards for -ve)

hope this helps.

Horlaarsco:

Thanks a lot for your help ill check the manual in the morning

eleojo23:

Thanks
Still trying to build up my battery bank...starting with a 100ah battery.
Victron seems a bit expensive

duwdu:
It's now 4 pm and the situation has not improved. (Attached.) Hmm, I guess that does it practically for this solar day?

........
P34c3
.....
...

ojeysky:


I guess you are now on the GK, what's been your daily generation since then? Mine has been above 2kwh daily on a 1.5kw setup.

On a general note, I was glad I made this solar investment; we've not had utility for over 4 months and only time I use gen is when I need to pump water in my tank, actually I feel I need more battery bank as I hit float before noon

Hopefully I will get to see good awof batteries here

PS: picture was taken around 7pm so was already on battery.

jazzman2:
For those of us who parallel cells or batteries, please read this:

http://www.smartgauge.co.uk/batt_con.html

You might have been doing it wrong all along.....

oluwaslimzzy:


Chat me up on WhatsApp for us to discuss privately with regards to that 08037748901... wish to hear from you soon

olaolu11:



Hmnn. If i get your point correctly, as one battery is charging via solar, i will switch on the inverter and use it to charge the other battery using ac charger. Is that what you imply? If yes, where and what charger do i get?

olaolu11:
This battery level signal at back of my inverter, how is it used? Do i have a meter connected to it or what?
And the fan is no longer working. Can i diy replace it?

harizonal123:

Did you consider the life circle of the battery that will be constantly recharged from. I don't think it is a good idea as it will reduce the life span of the battery you are tapping from

lexi28:


hi, best of luck tinkering with the set up. kindly post the eventual solution you used. can you also post a pix of how your digital temperature controller looks like and where you purchased it?

NiyiOmoIyunade:
Yes Sir!

This is the very site I stumbled upon years ago that helped me understand what was going on for the very first time.

Same principles I believe founding fathers like Oga GeorgeD deduced from hard experience and used to wire up their battery banks.

Method 3 can be further simplified by using busbars.

A slightly modified Method 4 is the way we keep multiple parallel battery banks balanced using only one battery balancer.

All in all, once you are paralleling multiple battery banks, using busbars will help you reduce the number of hops/jumps current has to pass through.

ojeysky:


I guess you are now on the GK, what's been your daily generation since then? Mine has been above 2kwh daily on a 1.5kw setup.

On a general note, I was glad I made this solar investment; we've not had utility for over 4 months and only time I use gen is when I need to pump water to my tank, actually I feel I need more battery bank as I hit float before noon

Hopefully I will get to see good awof batteries here

PS: picture was taken around 7pm so was already on battery.

earthrealm:


wait wait wait, you mean you are harvesting over 2kw from a 1.5kw array/?.

to what do you owe this superb harvest?..panels or Inverter?

am loving the in & out kw energy display of the inverter, could you post a link of where you bought it again

ojeysky:


Yes my array is 1.5kw, planning to push it to 2kw to increase Voc so I can get better early/late mppt generation. Even at the moment, I actually feel I may have gotten more hervest if I had larger bank




A few things:
- Panels are sunfit, though not a popular brand but it seem to perform well and better than flames. There was a sunny day, that I actually pulled 8A off it.
- Not too far distance so I have little voltage loss; It's about 16 meter distance from array to cc and all my cable connections were done with 8AWG double core DC cable.
- I have a standalone setup for the panels. I have given details of that in previous posts

Finally, am not an expert on solar but I have learnt a lot from you guys here (yes including from you) and I owe it to that as well



Thanks, I bought mine directly from manufacturer by sending a mail to sales@mppsolar.com but it's also on AliExpress just that buying from there cost more.

That said, I am actually still trying to understand how the kWh is read, does it mean that I did 2kw every hour?

Regards

ojeysky:



That said, I am actually still trying to understand how the kWh is read, does it mean that I did 2kw every hour?

Regards