₦airaland Forum

Why are you being extra nice? You said the truth and should offer no apologies. Who has a beta info can share but for now I have the same thought as you.

Saipro:
Heh heh heh. That's an amusing thing to quote. I 100% understand what richmon74 is saying. I think I'll sum it up as a wrong choice of words and ... well ... tempers. He sounds kinda inflammed ... but I could be mistaken - I offer my apologies in advance. It's true no system will offer you more than 100% efficiency much less 100% yield. The problem is in looking solely at the output and not the mechanics. Indeed, no solar panel is capable of 50% output at the moment. Even 25% is an overkill. The argument is about the total power output versus the rated power output. Once more, I could be mistaken but solar cells are pretty inefficient but ... we have lots of free sun so almost any inefficiency (so long as there's enough space and support for the panels) is acceptable. So, if you see a 200W panel generating 250W, consider the other variables.

By the way, some reputable companies, in order to protect their reputation, quote the minimum specs on their panels. One could almost argue they're under-rating their panels. Like Solarworld and Canadian solar. Then again, I believe that should be the norm, to guarantee customer satisfaction.

Caveat: Should I have offended anyone at all with my post, I apologise. I expect no reprissals, please. I truly am rusty and haven't dusted my books in a while but it is to my understanding that not much of the fundamentals have changed. Thank you.

EDIT: I wish to not have my head being bitten off so I'll state here that higher efficiency experimental cells exist but nothing of the sort commercially. Thank you once more

Its possible...a phenomenon called solar glare. You know solar panel are rated under standard test conditions where light intensity is 1000w/m^2 but there are rare occasions where the sun's rays are dispersed by a cloud causing illuminance higher than 1000W/m2. So if 1000w/m2 illuminance gives 130W, you would expect 1200w/m2 to give above 130w. However this is very rare.

battleaxe:
@bodejohn, dmerciful, pranil, all etc.

Is it possible to get 130W from a 130W solar panel?

Thanks.

This has nothing to do with the inverter voltage. 74V between the panel and CC is high enough to offer lower current flow and as such lower cable diameter. ofcourse btw the CC and batteries needs to be thick and short as possible. 8mm wire is pretty thick for 74v for a distance of 100ft

kiekie1:
Hmmmn , he can manage that for now since panels aint much on PWM but i feel 10mm ought to be his least for that distance on a 24v inverter VDC system and for futuristic upgrade sake ! He can contact me if he needs 10mm×2 flex copper fire resistant armoured solar cable... Cheers

I will recommend 6mm-8mm

anidat77:
Ok cool....just one more question, what wire size 6mm or 4mm etc do you recommend for a length of 100ft between CC and panels?
Isc is 8.80A while Imp is 8.18A on the panel.

Chanting integrity doesn't make you a man of integrity!

My recommendation will be to connect 3 string of 2 panels in series then parallel these 3 strings so that overall Voc will be 74.8V.(ie 2*2*2). This is best configuration for your system. 2 string of 3 panels will not work because the total voltage of 112.2V will exceed the CC 100V max limit.

anidat77:
@DMerciful......each panel has Voc 37.4V... 6 panels.

You need to provide this important info to enable right advice.
What is the Voc ( open circuit voltage) of the panels? Its written on the name plate of the panel

anidat77:
Hello Gurus, my 6 pcs of (200W @ 24V) solar panels are going to be located through 100ft cable lenght from the Epsolar MPPT 40amps CC,
What would be the best option in terms of solar panel configuration (ie series or parallel) and wire size to reduce current loss and not exceed Max MPPT input voltage of 100v on a good sunny day.

I'm sure there are people here with my same set up maybe with shorter cable distances,but please let me have your suggestions.

@Kiekie...my wahala don dey plenty o....if not for leaking pockets that 80amps outback solar charger would have healed my sores on this issue.

Are we going to buy it if they make it? how many people buying locally made inverter? i do not want to sound politically correct, before we start making high tech devices, we must have started producing transistor radio and pocket calculator. you know battery is a chemical cell that should involve high quality control in its production esp something use at home! mind you it contains acid! you dont want self inflicted bokoharam! Let us start small from finger batteries biko

Buhari is the least incompetent person in his administration

Sai Baba....change is here

Thanks....i did not install solar until i opened this thread...since then i have been happier for it.

GeorgeD1:
DMerciful,
keep up the good work.
cheers!

You dont know how this humbles me....thanks

Monlo:
My dear ,you can say that again.He is one of the best we have around here,always there to help.l remember sometime ago i had problems with my solar stuff,he was the first to come to my rescue,with enough backstage tutorials.May God continually bless him for his selfless service here without asking for a dime.Kudos to so many other gurus here on this thread,infact all i got to know from solar installation,are all from this thread.Started from reading from page 1 till this very page.And by the grace of God,i have a running solar installation ,courtesy DIY,i can even install now as regards this.Green all the way,if you believe RENEWABLE ENERGY(RE) has come to stay,CLICK "LIKES " to encourage those still sitting on the fence.One love @all.

Thanks

dicksonadams:
This DMerciful is a very nice guy, I am amazed with the way he has been providing guide and help to the guy. This kind of selfless help is not common without immediate gain or reward. Kodus to people like this. :

Go with this option,no need to worry yourself.
You can connect the 80W in series and the 120W in series then parallel these 2 strings...the might me a little loss due to d slight voltage difference but its pretty small.

codemaster2much:
it is a 12v battery system. And the 80watt is poly while the 130 is mono. Don't know where to get the 10mm cable, check both jumia and konga .

if you system is 24v inverter, PWM will not be efficient for use in the 80W series so get another small mppt. if your system is 12v, then connect the 80W in parallel with at least 10mm cables through ur PWM to your battery while the 130W should be in series through the mppt to ur battery.

codemaster2much:
I have an mppt and a pwm I was using before... Do you think this is OK and how can I connect them.

You can connect the 80W in series and the 120W in series then parallel these 2 strings...the might me a little loss due to d slight voltage difference but its pretty small. Or better still get 2 small mppt and run the two panel type separately to ur battery.

codemaster2much:
80w is 21.6 while the 130watt is 22

give more details...whats the Voc of the 130W and 80W?

codemaster2much:
Guys need advise, what is the best way to connect 130watt x2
And 80watt x2 to get the best power from the system to charge my battery {200ah}

Thank you

ALAYORMII:
It's a lost cause trying to make you see reason

Do you know how people react when a woman is part of a robbery gang? Nobody cares about her unclothedness, thats the least of her worries right now. do you see her covering her breast? she has far bigger worry why you are here worrying about her breast! She is there thinking about her life and what she has gotten herself into, you are here thinking about her breast!

ALAYORMII:
Why were her accomplices fully clothed??


Is removing her top a punitive method for stealing??

Someone stole N2million you're talking of giving her clothes to cover her breast after saving her from jungle justice. Is the exposed breast the most important thing or the two million she stole?

ALAYORMII:
And the police couldn't give the bare chested woman a cloth to cover her boobz

loool.....somebody brain don cast for here o.

Hi Guys,

heard recently of sea water stack battery with almost 10,000cycles. anybody has idea or has used it?

He likes beautiful women...just like me...but you are only allowed to have one...well thank God Wifey is beautiful....

Good people of this forum,

seems the world is moving towards lithium ion batteries as they have over 2000 cycles at about 90% DOD. they live over 5 times lead acid batteries when subjected to same DOD. anybody who have more insight and where to get these batteries cheaply should share.

cheers

How GEJ popularity is soaring without him uttering a word can only be divine. Since he left office, all manners of accusations have been levelled against him yet he keeps his calm and let his good works speak for him. I pray your good work will speak for you long after you've gone IJN.

i love your drive and your reason. 40 panels? you go dey sell to ur neighbors o!
Anyway, i have a modest system of 750W but want to increase to 1000W however even with this 750W with mains supply, i have not on gen for more than 6 months...last time i tried to put on the gen to warm it before it forgets to work, it refused to start and the process of trying, the chord snapped, ofcourse the key no longer work cos the kickstarter battery is dead from lack of usage.
Still in someone's house house with little space but i already budgeted like 1.5M when i fix ma crib
i love this forum.

GeorgeD1:
iLoveTheSun,
the bolded couldn't be more true. and, personally, that was the motivation behind my solar initiative from day one.
i always thought to myself, "if i can spend 3 million and above to buy a car that takes me from point a to point b
and on a good day i only get to spend at most 1 hour, two hours or even three hours in that car, why then shouldn't
i spend an equivalent amount to make my home comfortable to live in? a house i spend over eight to twelve hours
in everyday?" for me, it just didn't make sense riding a car fitted with ac and being comfortable for one hour only to
arrive home, park that same car and you enter into a house with no lights, no fan, waiting for when phcn will restore
public power or on the alternative going to struggle with a fuel guzzling generator when you could have all this with
the flick of a switch.
so, suddenly solar began to make more sense to me, regardless of the amount i was spending to put those 40 panels
on my roof.

The guy facing the flag is obviously a biafran

APC is a fraud

Dangerous job o....no body harness

zeestone99:
No dunka, roof mount is present.

At least Ojukwu did not drink rat poison

Tokt:

Amen.
Ojukwu remains a coward. Deal with it.

Haven't you guys noticed that Bubu's apostles take turn is spreading and keeping the propaganda going! First it was Lia Mohd, once everybody confimed he tell lies and no longer took him serious, they sent Hell Rufai. After Hell Rufai, they sent Oshiom-Ole. After Oshiom-Ole, they are now sending Amaechi! Is thief Amaechi the minister of finance? or he is in-charge of money recovery?Maaaaaad people