₦airaland Forum

bassdow:
Abeg explain this part "My full copper Belgium Ethernet cable is just there looking for more pv to be added."

"Tokunbo" Ethernet cable
As in with it I can still upgrade my pv size.

dollarnaira:
There is no way to determine that.
See, without proper tools/devices you cannot do this successfully especially çharging at 1s and 4s. Poor cells balance, poor set up.

DIY = RIGHT TOOLS

Chief, I can do this thing. I just need your guidance.

The 1s is not a problem cos I have a 3.7Voltage Cutoff module that will charge each of the cells fully. The BMS is also a 4S so the issue is solved.

The only thing I have picked so far is that I have to configure it to a 4S3P. This wouldn’t be an issue.

But how this builder did his configuration is what baffles me. Like I have no freaking idea how he did his configuration but it works for a 12V system.

Marykhay:
Chief, I can do this thing. I just need your guidance.

The 1s is not a problem cos I have a 3.7Voltage Cutoff module that will charge each of the cells fully. The BMS is also a 4S so the issue is solved.

The only thing I have picked so far is that I have to configure it to a 4S3P. This wouldn’t be an issue.

But how this builder did his configuration is what baffles me. Like I have no freaking idea how he did his configuration but it works for a 12V system.

It goes beyond working. Is it working well?
3p4s
Are 3.7 Lithium ion charging module for lifepo4?
The 4s bms does not guarantee cell balance.
Most of them are craps.

dollarnaira:
It goes beyond working. Is it working well?
3p4s
Are 3.7 Lithium ion charging module for lifepo4?
The 4s bms does not guarantee cell balance.
Most of them are craps.

Interesting.

Marykhay:
Interesting.

Connect at least 1A active balancer with the bms

Gshems:
get the 3000w sachet inverter from Valto or Iinnov8

is 3000w not too much for 220w(approx 400w) of load?

Was hoping for a 1000w PSW that's fairly rugged

capnies:
Connect at least 1A active balancer with the bms

Do you mean if I reconfigure it even without balancing the cells that this active balancer will do the work?

Or do you mean I should just add the balancer to the existing configuration?

Marykhay:
Do you mean if I reconfigure it even without balancing the cells that this active balancer will do the work?

Or do you mean I should just add the balancer to the existing configuration?

There are cheap Protection boards that can prevent overcharging of each well. Though lithium ion is more common, LFP are available too.

BangaRice:
is 3000w not too much for 220w(approx 400w) of load?

Was hoping for a 1000w PSW that's fairly rugged

Is your 220w refrigerator inverter refrigerator? 220w is rather high for a refrigerator consumption, even if its d old R314a coolant type.

Hope you know for the compressor to pick, it may go as high as 5x rated capacity If not an inverter refrigerator?

oweniwe:
If nepa wire can carry live AC current from transformer, then it should be safe..

If you check inside some solar panels cables, the wire is usually same whitish like nepa wire , though more flexible... So they should both be the same.

Buy new one from electrical stores... Full insulated bundle... (Naked one not advisable cos of lighting) Just know that they have different sizes (mm) ...

I use nepa wire for my set up... I think there are 4/5 strings inside and no problem whatsoever

Buy the size accordingly as required

The cost of flex pure copper cables no be here o

Thank you for your suggestion, it is appreciated.

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There are Sellers on this forum, selling items below that l asked for, are they scared of supply or what is the issue here?
I thought it is a good thing to first try to buy from people who contribute on this forum, before considering people from outside the forum?

I need to buy the following items:
- 10mm and 6mm DC Cable (full ones)

1) - 10mm Recline Nigeria cable
2) - 6mm AC cable ( Red and Black)
3) - 32A, 2Pole AC Breaker
4) - 20A 2Pole DC Breaker x2
5) - 100A Change Over
6) - 12 -14way Enclosure Box
7) - 500V DC SPD
- AC SPD
9) - 22A PV Fuse and Casing

Anyone who sells these Solar items, should signify.

Thanks.

oluchibabe:
Thank you for your suggestion, it is appreciated.


2) - 6mm AC cable ( Red and Black)

Thanks.

That number 2, buy single roll of each color and make sure it's original

That red and black wire, fake full everywhere... Small bending, e don cut inside

Also for heat dissipation, red and black wire together is more likely to catch fire if the wire heats up, insulation burns and live & neutral touch.

So more safe to run live and neutral separate, that's if you can't get high quality cables

oluchibabe:
Thank you for your suggestion, it is appreciated.

-------------------------------------------------------------------------------------------------------------------------

There are Sellers on this forum, selling items below that l asked for, are they scared of supply or what is the issue here?
I thought it is a good thing to first try to buy from people who contribute on this forum, before considering people from outside the forum?

I need to buy the following items:
- 10mm and 6mm DC Cable (full ones)

1) - 10mm Recline Nigeria cable
2) - 6mm AC cable ( Red and Black)
3) - 32A, 2Pole AC Breaker
4) - 20A 2Pole DC Breaker x2
5) - 100A Change Over
6) - 12 -14way Enclosure Box
7) - 500V DC SPD
- AC SPD
9) - 22A PV Fuse and Casing

Anyone who sells these Solar items, should signify.

Thanks.

Linnov8
Damreey

favouredbymercy:
Is your 220w refrigerator inverter refrigerator? 220w is rather high for a refrigerator consumption, even if its d old R314a coolant type.

Hope you know for the compressor to pick, it may go as high as 5x rated capacity If not an inverter refrigerator?

normal refrigerator.

Marykhay:
Do you mean if I reconfigure it even without balancing the cells that this active balancer will do the work?

Or do you mean I should just add the balancer to the existing configuration?

FOR EASY TOP BALANCE CONNECT THE BMS AND BALANCER AT ONCE AND CHARGE TO 3.65V WITH YOUR DEDICATED CHARGER NOW.

READ ALL THE CELLS TO ENSURE THEIR BALANCED.

AFTER BALANCING YOU CAN DISCONNECT THE BALANCER IF YOU WANT.

BUT LET THE BALANCER STAY FOR HOURS AFTER TOP BALANCING BEFORE YOU REMOVE IT IF YOU WANT TO.

BangaRice:
is 3000w not too much for 220w(approx 400w) of load?

Was hoping for a 1000w PSW that's fairly rugged

Na because of surge ó. Price difference no much. He might want to add more load ss time goes

Thanks bro

AyobamiOluwole:
I am not a seller nor an installer, I am mainly here to correct some madness.

In all you do, avoid the 400k guy and some other guy who said he will do the same if he was given the opportunity.

So far so good I’ve come to know about some folks whom many have mentioned to have a good reputation:
• MrReed
• Valto
• Damrey5 (I too like this guy for his tear down videos 🤩) Abi what’s that his name
• Dollarnaira (I don’t know if he sells)
That’s all I can remember for now. I don’t know if Seun has anything to say about inverters though.


Sha apply wisdom in all you do.

capnies:
FOR EASY TOP BALANCE CONNECT THE BMS AND BALANCER AT ONCE AND CHARGE TO 3.65V WITH YOUR DEDICATED CHARGER NOW.

READ ALL THE CELLS TO ENSURE THEIR BALANCED.

AFTER BALANCING YOU CAN DISCONNECT THE BALANCER IF YOU WANT.

BUT LET THE BALANCER STAY FOR HOURS AFTER TOP BALANCING BEFORE YOU REMOVE IT IF YOU WANT TO.

Alright. Thanks Chief

I want to ask a question ?

How often do we ground Solar setUps especially when the apartment / compound has no earthing.

Have seen setups where the installer added AC and DC SPD but the bottom part was never connected to anything.

Let me ignore those that try to connect to the Earth wire of the house mains wiring.

Some locations experienced severe lighting strikes this early morning. Inveters survival....

Good morning Chiefs,

I’m having a head start with my issue.

With regards to this system I posted earlier, these are the readings I got from the 4S configuration using the BMS connection the builder did:

Battery 0 -> Battery 1 = 3.18V

Battery 1 -> Battery 2 = 3.18V

Battery 2 -> Battery 3= 3.18V

Battery 3 -> Battery 4 = 3.2V

The problem, like I mentioned earlier, was that the 768Wh 12.8V capacity does not even get to half of what it should be. I guess this result is giving me a conclusion already.

But I need to hear from experienced builders:
@dollarnaira
@Mrreed (you no even dey reason my matter 😭)
@Valto (Senior man, at least say anything)
@capnies

Please what do you think is wrong with this system?
A. Weak or refurbished cells?
B. Unbalanced cells (I don’t know if the imbalance in the reading is negligible) causing the system to not reach its complete capacity?

For more context guys:
I use the system for my router, fans and other basic things especially when there is no light.

It is connected to a MSW satchet inverter and a PWM controller.

Even if the satchet inverter has an efficiency of worst case scenario of 70%:
I’m still supposed to get around 540Wh capacity.

But from my testing using calculated loads, this system shuts at 336Wh which is really bad.

The first picture is luxsun inverter panel power recommendation found inside the box
The 2nd picture is the spec of the pv input on the body of the inverter
The 3rd is the 535 jinko vmp and imp 40.81v and 13.11A respectively
My question is can I use up to 9 panel of this 535watt on this luxun inverter will it not be above the manufacturer recommendation as again the first picture?

⁷

Marykhay:
For more context guys:
I use the system for my router, fans and other basic things especially when there is no light.

It is connected to a MSW satchet inverter and a PWM controller.

Even if the satchet inverter has an efficiency of worst case scenario of 70%:
I’m still supposed to get around 540Wh capacity.

But from my testing using calculated loads, this system shuts at 336Wh which is really bad.

With the reading the cells are balanced only . 0.02v

What size of panel
Pwm controllers are not too good for lifepo4 cells.

Don't tamper with it GET 30A MPPT CONTROLLER
INCREASE THE PANEL TO 350-400W
you'll have peace.

Lifepo4 cells have long cycle life to die so soon

osayuwamwen:
The first picture is luxsun inverter panel power recommendation found inside the box
The 2nd picture is the spec of the pv input on the body of the inverter
The 3rd is the 535 jinko vmp and imp 40.81v and 13.11A respectively
My question is can I use up to 9 panel of this 535watt on this luxun inverter will it not be above the manufacturer recommendation as again the first picture?

The mppt pv input determines the size and connection of your panel

The max mppt pv input is 450v that means look at the Voc of your panels if it 45v it means you can't connect 10 of those panels in series, but you can connect 5 in series and then connect them in parallel 5s2p.

Your mppt is 100A
If the inverter handles 48v use 48v settings and you use more panels for faster charging ⁷
For 48v you can use as much as 5800w panel provided the pv input of the setup does not get to 450v

If it is 24v then you can use like 2900w panel with total setup voltage less than 450v

If your panel is 525w you need just 6 in series for 24v and like 12 panels for 48v connected 6s2p

Congratulations

capnies:
⁷

With the reading the cells are balanced only . 0.02v

What size of panel
Pwm controllers are not too good for lifepo4 cells.

Don't tamper with it GET 30A MPPT CONTROLLER
INCREASE THE PANEL TO 350-400W
you'll have peace.

Lifepo4 cells have long cycle life to die so soon

Thanks Chief for pointing out that the cells are indeed balanced (negligible unbalance), meaning I have no problem with the guy’s weird configuration anymore as well as the imbalance of the system.


I use 3units of 180Watts panels. Which is 540Watts. It charges fine. No issues at all with any component of the system. However, the system doesn’t last long enough for its capacity. This is the part I don’t understand anymore.

Pointing out that I should change to an MPPT is suggesting to me that it could be that the PWM is limiting its charge to less than 3.65per cell? Meaning that it doesn’t fully charge the system?

Well, I’ll get the MPPT and see if the problem goes away or not.

The voc of panel is 49.42v

capnies:
The mppt pv input determines the size and connection of your panel

The max mppt pv input is 450v that means look at the Voc of your panels if it 45v it means you can't connect 10 of those panels in series, but you can connect 5 in series and then connect them in parallel 5s2p.

Your mppt is 100A
If the inverter handles 48v use 48v settings and you use more panels for faster charging ⁷
For 48v you can use as much as 5800w panel provided the pv input of the setup does not get to 450v

If it is 24v then you can use like 2900w panel with total setup voltage less than 450v

osayuwamwen:
The voc of panel is 49.42v

Same thing
@49.3 when the weather gets hotter it could increase to 56- 57v
So you use 55v to do your calculations.

In series your voltage increases
In parallel current A increases

Marykhay:
Thanks Chief for pointing out that the cells are indeed balanced (negligible unbalance), meaning I have no problem with the guy’s weird configuration anymore as well as the imbalance of the system.


I use 3units of 180Watts panels. Which is 540Watts. It charges fine. No issues at all with any component of the system. However, the system doesn’t last long enough for its capacity. This is the part I don’t understand anymore.

Pointing out that I should change to an MPPT is suggesting to me that it could be that the PWM is limiting its charge to less than 3.65per cell? Meaning that it doesn’t fully charge the system?

Well, I’ll get the MPPT and see if the problem goes away or not.

What size of pwm are you using the truth is if your pwm is 30A only 200-250w will be used for a 12v system the rest are wasted as heat and can even destroy the controller.

Change the pwm to mppt.

That would be the end of your problem.

Charging is one thing, delivering the required voltage and current is another.

capnies:
What size of pwm are you using the truth is if your pwm is 30A only 200-250w will be used for a 12v system the rest are wasted as heat and can even destroy the controller.

Change the pwm to mppt.

That would be the end of your problem.

Charging is one thing, delivering the required voltage and current is another.

It’s a 60Amps PWM

Trippledots:
Linnov8
Damreey

Thanks, chief.

@innov8

How much are the following items, (incase price have changed) and delivery to Yaba?

Genuine 6mm2 (10AWG) 2-in-one solar cable with free pair of 30A 1500V MC4 connector 25yrds
6mm2 Recline AC Cable 10yrds
Tomzn 2P 60A adjustable over/under voltage protective device
60A Knife Switch
8 way breaker box (x2)
Tomzn 2P 600V DC SPD
Tomzn 2P 275V AC SPD
Tomzn 2P 60A (x1), 2P 32A (x1) DC Breaker
Tomzn 2P 16A (x1) and 32A (x1) AC Breaker
Tomzn 2P 60A adjustable over/under voltage protective device
50mm2 DC Cable 4yrds
Cable Lugs: 50mm2 (x6), 16mm2 (, 6mm2 (x8),

You can also share your digits/WhatsApp, so l can contact you offline