₦airaland Forum

Dam5reey:
Yeah.. a screenshot of your Panel specifications​ will help too..

I will make an assumption, say you have 30Vmp and Imp 6.7A

You connection will be
string 1 two panels in series(60 Vmp, Imp 6.7A)
string 2 two panels in series (60 Vmp, Imp 6.7A)

Connecting​ string 1 & 2 in parallel, will be ( 60Vmp Imp 13.4A)

I'll post images tomorrow

As I said, I want to be guided, that's wh I am here

The already set up at home now

Is 1000watts inverter

2 nos of 200amps batteries of 12v each that I connected myself in parallel, to avoid over voltage to the inverter.

The solar system purchased now are as follow

4 nos Panels of 24v 200 watts each. Solar panels are made by Frames
We also acquired 40A MPPT charge controller, and was advised to get a 32A breaker.

What have we done wrong? And what can be done to remedy the situation?

Note, I'm very unwilling to get a 24v inverter for now, until I'm ready for a massive upgrade of say 4 to 4 200amps batteries and sinewave inverter

kiekie1:
Hmmn , its rare to see an experienced solar tech - engineer give such advice unless if you meant mechanical/civil engineer .. If DCB ratings limits currents , my friend > George D would keep climbing into his ceiling to switch on tripped breakers in his pv combiner box on weekly basis

See below our WhatsApp chat

[6/11, 21:36] ‪+234 ‬: I am Engr. FREDRICK
Major in Electrical power and machines

[6/11, 21:56] ‪+234 ‬: But if that seems too expensive then you use a 40A mppt controller but make sure u also use a 32A DC breaker to limit the current flowing to the controller to avoid damage.

kiekie1:
How do you intend limiting current flowing into your 40a mppt with the 32a DCB ?

So says the engineer I enquired from and got that advise.

kiekie1:
In DC breaker calculation, serial connection of panels differs from parallel connection ! If it ain't very clear to you, get an installer to assist you . Cheer's

You're right.

There's limit to where I can thread in this regard.

Of course did the inverter and​ connections set up myself, but wouldn't attempt to go solo in this regard

Dam5reey:
Alright one 200W cannot produce more than 9A.. so at * 2 string you will have 18A.. 32A circuit breaker is good.

Wait o Dam

9*4= 36 and we are using 32A.

Are my equipment safe?

Dam5reey:
Modified.. what is maximum PV current...?
You can attached one of the panel specifications

I'm guessing that my panel 4 in number 200w produces about 7.5v

GeorgeD1:
zeestone,
well done. keep up the good works. i only wish other sellers like solar depot, et al will toe this line.
i observed that most die-hard retailers are still hanging on to their old high price which they adjusted for
when dollar was selling for 450/500. now that dollar is trading below 370 their price adjustment mechanism
seem to have gone on sabbatical leave. which way nigeria?

Too many greedy Nigerians

Bought two 215/70/16 tyres today at same rate of 460 naira to a dollar.

I'm just upset about this

Dam5reey:
Good from reviews the Epsolar has inbut over current limiting function..

You people don't kill me.

You mean I should forget the 32A breaker? And go for 50A?

Dam5reey:
It's possible.. with Epsolar MPPT controller... 40A.. however you will still loose power during peak periods..
Connect in 2 x 2 strings...

Option 2 buy 60A, 70A MPPT controller as I stated earlier.. 800Watts will generate Approx 60A at 13.8 float charge...

Thanks

See image below of what I'm settling for

40A mppt controller and also using a 32A DC breaker to limit the current flowing to the controller to avoid damage.

zeestone99:
What typ of panels, 200w or 250watt, buy a mppt 12v/24v controller, epever or any gud brand ll do, if u need controller watapp 08117398294

200 watts panels x 4 made by frames

How many amps charge controller would work for a parallel connection for the 4 panels to charge 2 now 12 v 200amps batteries?

zeestone99:
Jst check if ur mppt has a nominal voltage of 12v, if ur panel is 24v,u can connect ur panel in parallel or even series two 24v as long as it doesn't exceed the max input voltage of the cc(usually btw 100v to 150v).the Mppt ll tk care of the rest. Also check ur nameplate to mk sure u r nt exceeding the current ur controller can dish out

I'm just about to do the connection.

I just got panels, but was confused about the capacity of the charged controller to buy.

We are fixing next Saturday, that's why I need advise

Poor camera in 2017

Dam5reey:
Yes, this will make your battery system 24 Voltage.. and capacity 200Ah.. Rather than your 12V 400Ah.
however, you will need to change the Inverter to 24V..

Since your Panel is 800Watts.. you can use a 24V 40A MPPT controller, which will take 1040Watts panel at 24V

Good morning

For now, I do not intend to change inverter
How best should I go about my

1000 watts
12 v

400amps battery

800 watts solar panel

Mppt 40amps charger

Dam5reey:
In this case.. PWM will be a waste of resources....

For better efficiency.. if you are not looking at cost go 24V battery Voltage system with 40A MPPT controller....

Your 800W panel will provide approx. 60A @ float charge of 13.8V. you will spend more in this case... Since 60A MPPT controller is required...

Go with first option.. otherwise​ you can go with your installer,

Does the highlighted mean battery connection should be in series rather than in panel as currently is?

Dam5reey:
Alright.. don't complain about performance after installation sha....

What is the PV system watt and battery system Voltage? The installer might have his points..

What other points​ did he mention aside 4 panels?

[quote

Dam5reey:
Alright.. don't complain about performance after installation sha....

What is the PV system watt and battery system Voltage? The installer might have his points..

What other points​ did he mention aside 4 panels?

See my response below

Inverter is 1000 watts 12 v

2* 200amps battery
Connection in parallel

Intend to use
4*200 watts mono Frame panels

You guys can advise better

Thanks all

DMerciful:
Unless u re OK to loose 30%

DMerciful:
Use MPPT......Mppt harvest Ur 25%-30% more than pwm. Its the latest on charge controller technology... Its like Comparing CNN with NTA

Thanks.

I was told to use PMW, since I don't inter to use more than 4 panels

denziz:
Football enthusiast ,I've 3 metre dish which can solve your problem of where to watch Epl and some other leagues.I've gotten 4.5 metre that is the reason I want datch it out,if you're interested you can reach me on my WhatsApp:08053054300 or simply call 08022045276

How clean and what's you price?

Yes o. Dey su can dan

Wan naijiria

Hello house.

Please advice.

Between Mppt and PmW charge controller, which should I use and why?

Thanks

maria43:
So to seek a right of secession is a declaration of war?
Don't you get it, we are not compatible

You're missing the point.

Ojuiku declared war and not gowon. Ojuiku 'perceived' marginalization and chose to go to war

This guy should shut up.

The lanre Osibona he mentioned is my Uncle. He should shut, all he said are twisting the facts

Evablizin:
Lols Dino the truth sayer,the man who fights corruption with his anti-corruption book continue

If you're clean, you need not fear arrest.

Fanikayode has been abusing APC and buhari almost everyday. He has not been arrested for treason, but he's facing charges for collecting money.

There's freedom of speech, but there's no freedom for corrupt people

deji15:
I really can't understand why they always believe in the alternate facts when the truth and reality stares them in the face.

If greed didn't push ojuiku to war, then no one would ha é been starved. Before the war were people starved to death? After the war were people starved to death?

So, without one man starting the war, no one would have been starved

new2020:
How I wish that Awolowo did not starve 5 million Biafraan children.

Ojuiku starved them, not Awolowo

Yes I will, except if Osinbajo decides to run for office.
Aside buhari, which other candidate is better?
Atiku? Elrufai? Kwakwanso? Gej or who?

jona4real92:
Tanzanian President stops his convoy to chat with a physically challenged citizen of his country to know his needs and offer him the necessary help.



Can your president do this?

Drop your comments
https://aysugar..com.ng/2017/06/photo-can-nigeria-president-do-this.html?m=1

Rubbish and attention seeking thread

Fayose the eye service governor does that
Politicians when seeking office goes to the street to buy roasted corn.

So what's the big deal?

Current president of Nigeria now is Osinbajo, whilst OBJ is the vice. As at today

GAZZUZZ:
Car cannot cash coold again? Do they now have feelings?

Its the body, which is metallic that gets affected by weather and moisture

So he is this talented?

Dialogue and kudi or ego at work

I heard that the Niger Delta Avengers were given $10m at first, during initial negotiations and thereafter they agreed with the government on how much to be paid monthly.

Note that this special arrangement is between the FG and the Avengers and not part of the usual Amnesty budget.

Yes, it was dialogue and settlement.

You can see that the avengers haven't coughed for over 6 months, cos their lungs have been blocked with $$$$$

Arelukman:
I have 3.2m fibre dish in Ibadan, if you wish u can contact me on 07054393334.......

do you mind posting pictures?

sheneneone:
Call me on 08153755777

your number not reachable