₦airaland Forum

A few thoughts.
1. Why were the lights turned off?
2. Why were the cameras removed?
3. Why did the cctv footage available stop recording at 8pm.

A liar needs to have a very good memory.

You will know the truth and it will set you free.

Not everything that shines is gold

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How much does a 24/36v dc sumo cost?

ojeysky:
If your controller can always maintain 24 to 27v output to the ups, I think it should be fine. Ofcourse gurus in the house may advice better.

if the battery aint totally dead, it might be better hooking them up to a cc so as to serve as a voltage limiter, eslse i am pretty sure you will definately fry the inverter and/or the controller in no time.

adrusa:
19KW of PV? I think it is flexing? Do I think it is too much? I can not say without understanding his use and motivations. But 19KW of PV is huge, it is easy to read waste into it. By the way, how much KWh does he generate per day? I have roughly 7KW for total independence from NEPA except for my AC.

I dont think any ever raised that issue because we understand the dynamics. Niyi does high tech installs for top notch class coupled with the need to having a feel of the service he renders.

If my system that demands i use a 100w fridge for 10hours everyday requires that i use a 2.2kw array. Then i wonder how 5000w consumption for 24hrs with good battery management will not require 19kw or more.

Note: for gel,agm batteries. A 200ah battery means that it can supply 200A in one hour theoretically but it doesnt mean that it will in practice. there is a discharge rate that must not be exceeded and must be followed in practice, else sudden death for the batteries

zeestone99:
How do you cope using it with fans.

When i used those modified, i had dc fans, but i dont use it anymore.

Let's try to educate some folks. Thats the reason we are here. Let's analyze niyi 19kw/19000w panel array. Is it really too much.

zeestone99:
I doubt you will get a pure sine wave.

of course not.its a modified sine wave.

truthbetold22:
Chest beating afonja.. empty vessel.. Because we are on Nairaland, some people will be claiming all what not.

Because it is Niyi now, none of u want to think with your brains, only with ur anus.. my opinion hasn’t changed. 3 inverter air conditioners, an inverter washing machine, an inverter microwave, TVs on energy saving mode, all bulbs as leds and u are down to 3000-5000 watts instantaneous at most..

Why then does anyone need 19k watts??

Uninformed fools

the talk has spoken itself. My advice is that you need patience and never rush. We are waiting for your analysis to cater for an off-grid scenerio , tell us the battery bank needed, the dod%, inverter choice, cc choices, etal.
We are waiting to learn from your wealth of experience.

truthbetold22:
Imagine ur list of accomplishments... very funny. We know u not.. we don’t even know if you have a wonderful wife or wonderful kids.. 500k in renewable energy .

The joke is on you boy.. You need to grow into a man and achieve proper things. Imagine calling getting married an achievement..

You must be really poor

chai your DNA must have written in FORTRAN. The person who did this to you no try at all. Let's move to the season 2. THE DICEPHER

ceaser:
Eeya. It's so sad.
Funny enough you could turn out to be one of my residents, that's how small the world could be. After all NL is a world of anonymity.

But you've been a great disappointment to the medical profession with your depositions.

Except those that may have been patient enough to decipher thru some of my subtleties on NL, not many will ever think that I have attained the highest level in the medical profession (on the clinical side of course). Yet I never tried to brag about it nor rub it in the faces of anyone.

Truly, as Barezzi opined, people in the west mostly mind their business. Such outlooks about life also come from experience and exposure, two vital things that is apparently lacking in your make up.

If you truly are a doc as earlier alleged, then I honestly think you need to do a deep introspect to know if medicine was really your calling.

Some things are just in the blood, and life might not be fun if we don't have some of this rare breeds you know. All you need now is sit back, relax and let's see analysis.

Topmost11:
Any seller there you can recommend sir?

CNN has one of the cheapest prices in the market. They are just a little after union bank, opp the main market. I"ll send you the shop no. Let me check my receipts. But shine ya eye o as ALABA boys concern,

ceaser:

Okay now I wantu "beef" you

Why would you live in a 12 hectare mansion when you and the family can manage a face-me-I-slap you 2 room apartment?

Does that not amount to waste of money and space? People can be wasteful sha

Let me have opposing view before I am accused of being follow follow

don't worry, i'll give you 2hectares for your opposing view. what a way to spice up the week

Topmost11:
Anyone having this, and price?

That cost less than 6k for new in ALABA. I advice you should just go for the 1000w with charger. Cost 15-20 in alaba . the choice is yours.

truthbetold22:
Oga shut up, stop sounding ignorant.. if you cannot offer opposing views, u are just a follower.. stop trying to sound like u know what u are saying. Simply dissect the message and not the messenger.

Poverty mentality ke u dere.. u think say na to post fantasies on Nairaland?

Oga that is looking for 20k businesses to start.

Complete slowpoke

O fe gbo bebe Oro abi? silence they say is golden, do not reply a fool, but you might need to reply to show him his foolishness.
Our histories in nairaland and other forums says it all. I do not have to brag here with a faceless moniker but atimes it is good to set matters straight. If i look for a 5k or 20k business to start means nothing at all and does not affect anyone.You should ask when was that and what i have made of it. That you went to med school in germany does not mean you should have no iota of common sense. Spilling trash all over nairaland and causing commotion up and down in various sections. Or is that what they thought you in med school? Referring to another as making stupid purchases? You obviously have low self esteem and have terrible language manners.
If i have a 20k business and it helped my get married with wonderful kids, have a house and other investments, and can also make 1/2 a million purchase in renewable energy, while my bsc degree from oba awon university rots in a file there. Its been a wonderful 20k business then.
Grow up boy.

I had quite some catching up to do. Lets put all the rant of this fellow to rest. This poverty mentality is mind boggling . How does it affect anyone what others spend their money on? An empty drum they say.....
This guy is searching for cheap popularity. We all have history on nairaland, when you check some peeps own. Then you understand where they are coming from. Am off to sleep with my lovely family in my 12 hectares mansion. lol. Ehnn
Some will be sad that i live in a mansion like that o.

ceaser:
That AE thingy is somehow. An order that I've placed for over 3 weeks has remained unshipped till now.

I've had to open trade dispute for some other items that have not arrived and the purchase protection had ran out.

I understand their constraint, really and even I myself will wanna be careful about getting stuffs from there after I experienced some episode of flu around early January when I took delivery of some (like 12 large parcels) items. I didn't have a face mask on or used gloves. The only conscious IPC protocol I observed was to avoid touching my face with my hands thru and also made sure to wash my hands when I was thru with opening the parcels. But a week later, I experienced the type of sore throat and catarrh that I haven't had in a long time, even with serious headaches. I was scared and literarily avoided families and friends for the 10 days that I had that flu.

It may just be the ordinary flu that comes with the hash harmattan but hey, I had reasons to link the parcels to the flu one week after, in my own mind o.

I read that parcels from China being a vehicle for the transmision of the Covid-19 is very remote, but I won't take chances either.

this viruses are spreading massively o. I am halting any orders for now. Thanks

Dkev:
dear solasola and truthbetold, what the both of you said is unfair. never has anyone on this forum with a large array questioned or insulted anyone's small array/system. these older guys are usually very willing to help others. if you haven't seen houses that need such systems, I have, but still, that is not sufficient reason to basically insult their choice of an electricity system. please do not drive these men away from this thread with your bad attitude. they try out new innovation with their system which gives us the courage to try it out on our smaller systems. And please, truthbetold, stop with the foul language, it makes you look bad

haba, am I being quoted out context? You thoroughly got my point wrong. That I don't have the funds to achieve 25kw or go lithium, I would never scorn or beef someone who can. We are learning from their experiences. And if I made a reference to it, its because I am wowed by it.

mctfopt:
I agree with ojesky, you are better off with an MPPT SCC. That way you get to maximize your 2.2kv PV array's yield. Welcome to the green club

Yes, am doing that asap

ojeysky:
Why not MPPT, with such an array I suggest you use MPPT controller instead. The performance will shock you when compared to pwm.

I am ordering one via aliexpress soon. Thanks

The way you guys analyse solar energy is heartbreaking to me. 19kw array? Are you running a cold room. Well thanks all so far for sharing. I have learnt a lot as
I started out running my old car battery (75ah)with a 150w panel and just run all lights on dc and sometimes tv via a modified inverter. But now i have upgraded to a 2.2kw array,a 60amp pmw, and a 24v/ 200ah setup. Setup doing really good with 50% dod.I now make cool money with my solar knowledge. Thanks to ceasar, niyi.....mctfop..,ojeysky,earthrealm and all.......you guy ignited the electrical spirit in me. THANK YOU ALL.

ojeysky:
There should be no issues with that unless the charge limit of your battery is reached. If utility is doing 20A and your solar is doing 10A it simply means 30A is going into your battery. So you need to be sure that your battery can accept the charge rate or you modify max charge as you find applicable(if you have that option on your gear).
You need to be sure that your chargers are intelligent enough to stop charging once battery is full.

thanks for the response

I was just thinking, what happens when mains comes on and supplies charge to battery while the pv also does supplies charge. Could there be a conflict atimes.? I have always been totally off-grid and was wondering as i have some installations soon.i will soon do some major upgrades.@ ceaser,niyioluyomade,mftcot and etal.

NiyiOmoIyunade:
I need to clarify that it is not really about tightness of the connection but two factors come before;

1) Sufficient contact area between the cables being joined - i have found your typical near 1 inch of contact insufficient - perhaps 2 inches of contact is ideal and splitting the cables into smaller branches that can be wound/braided together better

2) Ability to weatherproof the connection and keep moisture out as well as withstand heat.

Think of it that the cables with cheap asian panels may be substandard but the use of MC4 is not magically upgrading the cables to a better spec, rather the MC4 ensures minimum viable contact surface area between the panels and keeps moisture out and is able to withstand the heat of the sun.

To reiterate MC4 metal contacts are pretty thin and unable to withstand the arc that comes from making or breaking contact under load, yet if used properly, they manage to create secure connections that last many years.

I encourage anyone to look into the anderson power plugs for DC connections - rated for about 100,000 no load connects/disconnects and over 200 connect/disconnects at full load. Even if you don't use them to connect panels together, a serious DIYer or pro installer will doubtless find many applications for them.

hi mr niyi. You are abosolutely right. I had to learn this when my 600w pv array began behaving like a 450W in practice. Lets forget what the book says cos there are so much sub-standard materials in the market. Mc4 ko mc4 ni. Except you have the premium ones.

ceaser:
Does flames have their accredited company here in Nigeria?

Non
that I know of.

ceaser:
Whoa! Why does your installer need to cut off the easy MC4 plug and play accessories that came with the panels and then joined wires the more difficult way? Or are there downsides to using MC4 that I probably am not aware of?

This is disheartening.

mc4 connectors atimes losses current. You know there are little sparks here and there if the connection ain't thight enough.

tonididdy:
Thanks sire.
From the explanations on the first page but using a calculation of 6hrs sunlight. I need 350w panel to sufficient provide my needed wattage hours. This means I may need an extra 150 or 100w panel.

Insert is my CC details.

that your cc looks familiar. I have a similar one. You can still add another 150w, meanwhile, check your current amp

efuro:
One reason why this thread still enjoys continuous survival is that we have near zero tolerance cheating particularly supplying wrong items not specifically demanded for (usually items beneath price paid for despite paying over bloated prices all the same).

However, I will advice you contact another installer to check your PV. There could be many reasons why your PV is still outputing 2 amps inspite of SunDay. You could even have a full battery sef.

When you have exhausted all your checks and possibly redemption. Nothing STOP YOU from letting the house know the dubious person SO THAT WE CAN OSTENTATIOUSLY ACT and blacklist him before he tarnishes other honest marketers or innocent hobbyist/diy who may fall victim on daily basis to such devilish cheating acts he calls business.

Letz get value for money before Nigerians loose faith in renewable sources due to these act wickedness!

like I posted earlier, the more you look, the less you see. I will prefer to buy direct from company if possible. Alaba guys have all stickers you can imagine. from bottom to top. thinking of making my own panels by my self soon.