₦airaland Forum

olatade:
Please i need your expert opinions on this question I'm about to ask

My 60amp felicity mppt CC rating for 12 volts is 800watts, but can one install 2 units of 430 watts,making it 860 watts of solar panels for it?

Will it damage the charge controller in anyway?


It's a felicity 60amp CC

No it won't.
Just don't exceed the maximum PV voltage of the controller

Obnoxious2001:
No it won't.
Just don't exceed the maximum PV voltage of the controller

Thanks alot

olatade:
Please i need your expert opinions on this question I'm about to ask

My 60amp felicity mppt CC rating for 12 volts is 800watts, but can one install 2 units of 430 watts,making it 860 watts of solar panels for it?

Will it damage the charge controller in anyway?


It's a felicity 60amp CC

You don't wanna do that especially since we don't know how much tolerance it's got.

What I mean by tolerance level is - when something such as a resistor is rated say 20 ohms, you might get away with stressing it a little bit above that 20 ohms so long you don't exceed it's tolerance rating BUT see eh, to be on safer side, abeg I often suggest you don't even hit it's rated limit on sticker, let alone relying on tolerance level.

Moreover while still on 12-volts when you have approximately 860 watts. Most times, you only should consider 12-volts if you've got a single solar panel or your inverter / charge-controller supports just 12-volts and for some reasons, upgrade ain't happening anytime soon.

MoreOver the higher the voltage, the better the performance hence i would suggest you move up to at least 24-volts by connecting both Solar panels in series. It doesn't matter if you've got just a single 12-volts battery as the charge controller knows it's work and would take care of that.

olatade:
Please i need your expert opinions on this question I'm about to ask

My 60amp felicity mppt CC rating for 12 volts is 800watts, but can one install 2 units of 430 watts,making it 860 watts of solar panels for it?

Will it damage the charge controller in anyway?


It's a felicity 60amp CC

It won't damage your controller. It may only take the max wattage and ignore the rest. Notice that i emboldened the "may", coz I have see controllers rated 720w for 12v connection doing up to 800w and even above.

But, accounting for efficiency and energy conversion losses, and the originality of your panels, they will NOT output the entire 860w. It will be lesser

olatade:
Please i need your expert opinions on this question I'm about to ask

My 60amp felicity mppt CC rating for 12 volts is 800watts, but can one install 2 units of 430 watts,making it 860 watts of solar panels for it?

Will it damage the charge controller in anyway?


It's a felicity 60amp CC

The big question would be whether you can even get 800w from your 860w panels

As long as you you don't exceed vsc rating of the charge controller, you'll be fine anyway.

GloryJoyeux:
Hello,

When sizing your system an energy consumption audit is one of the most crucial steps. I can see that you also listed the electrical loads you intend on carrying in a latter post. Although this is different from a comprehensive energy consumption audit, I will work with that figure.

Firstly, you must understand there is always a strong tendency to improve on a solar system after it has been installed so a lot of folks just go big from the get go if they are able to afford it.

A crucial question is: are you sure you really do not ever want to run that air conditioner? I’m asking because it seems like you really want it included, but the truth is, if you want it down the line, you will have to upgrade your system. Now, the ability to upgrade your system down the line is also a major advantage of residential ess, it means you can do what you can afford now and with time get to were you want it to be.

Answering your questions:

I will assumes you are comparing 48v batteries because using a 7.5kw inverter with anything less than 48v batteries system is poor design choice.

Battery size : Two paralleled 200ah battery is 51.2v x 400ah = 20kwh. That is over double the capacity of a single 7.5kwh battery. Both of these can power your air conditioner and other systems mentioned during the day with your 7.5kw inverter. However, at night, if you use the air conditioner with the 7.5kwh battery, you will quickly run out of stored energy. But the 20kwh battery will be more than enough to run your ‘inverter’ air conditioners over night.

By now I’m sure you are understanding the concept? Bigger batteries mean more energy stored for when there is no sunlight, it means longer run time of electrical load and means an extra day or two of autonomy.

Days of Autonomy : this is also a major factor when designing systems. In Nigeria right now we are at the raining season and this means poor solar yield. You therefore need to design a system that can go through at least a day of poor solar yield i.e. a full raining day where your batteries would just add 10 percent charge.

The larger 20kwh battery will enable you to plan 12kwh for the night, and the balance 8kwh for the next night incase there is poor solar yield due to rainfall.

The 7.5kwh battery means you will have to plan 4.5kwh for the night and 3kwh for the next night incase of poor solar yield.

Now, it all depends on energy consumption. Someone might be very okay on 7.5kwh inclusive of days of autonomy, while another will be okay with 20kwh, some have up to 90kwh as home ess.

Solar generation : I see you listed 4 units of 580w solar panels. This is 4 x 580w =2,320 W. Now, you must understand that you will hardly get a sustained 2,320w of solar yield. Always aim for 90 percent solar yield which is 0.9 x 2320w =2,088 W. Now you must consider inefficiencies when converting current and voltage to charge the batteries. Expensive inverters and solar charge controllers like those made by victron offer way higher conversion efficiency. But, most cheaper inverters we use offer poor efficiency. So let’s go with 85 percent conversion efficiency. We have 0.85 x 2088w=1,774.8 W. Since you battery is 51.2v, it will charge at average of 53v so we have, 1,774.8w / 53v = 33.4 amps.

Take note of the figure 33.4 amps. If you go with the 7.5kwh battery which is 150ah. It will take up to 150ah / 33.4amps = 4.5hrs sunlight to charge. Now notice if you go with the 20kwh battery which is 400ah it will take up to 400ah / 33.4amps = 12hrs sunlight to charge

This above is only accurate if you are not running a single day time load. Once you are running a load during the day eg your freezer is turned on. Then, your 1,774.8w from solar panel will need to power those loads first, before sending the balance to the battery, meaning you will be looking at 27amps or even just 25amps charging current.

Now, not all sunlight is equal. Just because it’s daytime doesn’t mean you will be generating such high sustained figures. For a fact, you can only expect such sustained performance all day only during the dry season in the south, except you are living up north in Nigeria.

We can therefore conclude that your solar panel is completely underpowered.

How to size your solar panels : I will give you my personal calculation that works for me always. If you are resident in the south of Nigeria, size your panels to fully charge your batteries with just 1.8hrs of sunlight i.e 1hr 48mins of sustained peak solar pv should charge your battery to full. If you are in the North use 2.5hrs of sunlight for your calculation.

This means that, to size your panels divide your total battery capacity by 1.8 if you live in the south and 2.5 if you live in the north. So 20kwh battery / 1.8 = 11,000w total panels and 7.5kwh battery / 1.8 = 4,160w total panels.

I can assure you, if you size your panels this way and factor in days of autonomy for battery size. Come rain come sun, out of 365 days a year, you will always get full charge for a minimum of 340 days. The remaining less than 25days which translates to 4 times a month in the rainy season, you can expect minimum of 50 percent charge.

Regarding questions 2 and 3. Do not buy from some alaba marketers, to be safe just go straight to their official distributors and buy from them. I have seen situations where they print new stickers with higher capacity and paste on their batteries to deceive unsuspecting customers. Do you research and ensure you purchase from the right source or you will not get value for your money. For the inverter part, you can maybe google search the name of the inverter and add words like ‘repair’ , ‘fault’ , ‘common issues’, ‘problems’ and see if you can find any known issues documented online. This is a neat trick for researching any electrical device you intend to buy.

*sorry for any typos, I didn’t proofread this.

This is interesting, I am surely going to keep this info. Thanks

🤣🤣🤣🤣🤣

mahkanjuh:
Good day house
Please what is the maximum power rating of a 6.2kva 48volt sunmate inverter
Because an iron of 2300w was plugged on it and it is showing 2.3kva and 98% load on the inverter

Good evening house. Please, I have already purchased two 625 jinko panels and two 220 AH tubular batteries for the solar system I want to install. I heard that Indian inverters are best for tubular batteries and hybrid inverters for lithium batteries. I do not know how true this is. Also, I need recommendation on a good 2.5kva/24V inverter for my battery type and the type of charger controller I should use. My budget is around 400k for both. Thank you.

skywalker95:
Good evening house. Please, I have already purchased two 625 jinko panels and two 220 AH tubular batteries for the solar system I want to install. I heard that Indian inverters are best for tubular batteries and hybrid inverters for lithium batteries. I do not know how true this is. Also, I need recommendation on a good 2.5kva/24V inverter for my battery type and the type of charger controller I should use. My budget is around 400k for both. Thank you.

2.5kva Smarten, Afriipower or soccerpower inverter should be around 270k and get an external 40amps MPPT controller and you're good to go.... no law says hybrid is for lithium, so far the controller n standalone inverter are editable, then they are suitable for lithium battery installation

skywalker95:
Good evening house. Please, I have already purchased two 625 jinko panels and two 220 AH tubular batteries for the solar system I want to install. I heard that Indian inverters are best for tubular batteries and hybrid inverters for lithium batteries. I do not know how true this is. Also, I need recommendation on a good 2.5kva/24V inverter for my battery type and the type of charger controller I should use. My budget is around 400k for both. Thank you.

Ur 400k wud get a budget hybrid inverter. Get one with good warranty support sha like sako, felicity, sms. Gives u that leverage if u decide to change batteries to lithium later on rather than overhauling ur set up

Want to commend @justcallmenuel. Bought some panels through him that ended up bin overated. Supposed to be 440w but checking online showed them as 360w. Returned it back and he refunded me without delay tactics or wasting time.

These are the type of testimonials we live for.

Drgreatone:
Want to commend @justcallmenuel. Bought some panels through him that ended up bin overated. Supposed to be 440w but checking online showed them as 360w. Returned it back and he refunded me without delay tactics or wasting time.

Hello Guys,

Good morning...

Our product offerings include, but are not limited to, the following:

JA 580 Mono Solar Panels
5kWh/48V BYD Lithium Batteries
Leoch Lead Carbon 12V 200Ah Batteries
Voltronic Hybrid Inverters-3KW & 5KW
Victron Battery Inverters-3KVA/5KVA/8KVA/10KVA( Multiplus & Quattro brand)
String Inverters-20KW/50KW/60KW/100KW ( Huawei & Goodwe brand)
We believe that these high-quality products would be an excellent fit for your business. We would be thrilled to have you join our list of esteemed dealers and work together to expand the reach of these products.
Please let us know if you are interested in exploring this partnership further. We also sell Perkins, MTU and Gas Generators ranging from 15kva-2500kva.

580w Panels = ₦155,000 EACH
Battery = ₦400k each

Whatsapp or Call: 08033664334

odimbannamdi:
It won't damage your controller. It may only take the max wattage and ignore the rest. Notice that i emboldened the "may", coz I have see controllers rated 720w for 12v connection doing up to 800w and even above.

But, accounting for efficiency and energy conversion losses, and the originality of your panels, they will NOT output the entire 860w. It will be lesser

unFortunately, most don't buy such charge controllers + it's not even adviceAble to begin with. That kind risk ain't worth it abeg. Charge controller no be 10 naira

skywalker95:
Good evening house. Please, I have already purchased two 625 jinko panels and two 220 AH tubular batteries for the solar system I want to install. I heard that Indian inverters are best for tubular batteries and hybrid inverters for lithium batteries. I do not know how true this is. Also, I need recommendation on a good 2.5kva/24V inverter for my battery type and the type of charger controller I should use. My budget is around 400k for both. Thank you.

when shopping for inverters, and charge controllers, would suggest going for those supporting wide range of voltages that's; 12/24/36/48 .

As for brand, there are lots of quality brands. Even something such as Sukam should be enough for you. That indian inverters are mostly of high quality, doesn't mean it's all of them; Also doesn't mean you should blindly buy anything they tell you is indian.

bassdow:
unFortunately, most don't buy such charge controllers + it's not even adviceAble to begin with. That kind risk ain't worth it abeg. Charge controller no be 10 naira

What risk do you refer to, sir? And what type of controllers do you refer to?

Drgreatone:
Want to commend @justcallmenuel. Bought some panels through him that ended up bin overated. Supposed to be 440w but checking online showed them as 360w. Returned it back and he refunded me without delay tactics or wasting time.

since he didn't disappoint you, you just might have kept mute. Just ma own opinion sha.

Another is, what if na different sticker you go read online.

Now let me share one of my many tactics when shopping Solar panels.

I only go for maximum of 300-watts. Reason being it's rare getting those over-rated ones in this range. 
Na mostly above 300-watts you go see over-rated. 
I don't blindly TRUST recognized outlets because even if management no do, staffs might not be entirely honest.
if you have taken notice, you would observe I've never suggested anything above 300-watts in here.
Of course, I get a combination of other things I do also.

I no dey too like share such things as dem sef go see am begin upgrade their tactics.

odimbannamdi:
What risk do you refer to, sir? And what type of controllers do you refer to?

when load from Solar panel exceeds that of the charge controller, risk over loading the charge controller which could cause it to over heat. Even MPPT has got it's ratings.

it doesn't matter if the charge controller is of high quality or not.

Normally, appliance would draw only what current it needs so long the voltage ain't exceeded BUT when it comes to charge controllers, that's not always the case.
Some would disconnect until the output of the solar panel comes down to acceptable level so long the rated maximum input voltage of the charge controller ain't exceeded.

But adding Solar panels above capacity of the charge controller, you risk over charging the batteries, and over heating the charge controller.

The damage might not happen instantly but in a short while, you would see result.

Obnoxious2001:
No it won't.
Just don't exceed the maximum PV voltage of the controller

And he should sync settings on both controllers.

bassdow:
when load from Solar panel exceeds that of the charge controller, risk over loading the charge controller which could cause it to over heat. Even MPPT has got it's ratings.

it doesn't matter if the charge controller is of high quality or not.

Normally, appliance would draw only what current it needs so long the voltage ain't exceeded BUT when it comes to charge controllers, that's not always the case.
Some would disconnect until the output of the solar panel comes down to acceptable level so long the rated maximum input voltage of the charge controller ain't exceeded.

But adding Solar panels above capacity of the charge controller, you risk over charging the batteries, and over heating the charge controller.

The damage might not happen instantly but in a short while, you would see result.

Overheating the controller at max amperage, possible. But overcharging the battery? Nope. Except the charging settings are not set correctly.

On another note, I've noticed some of your posts have fonts that stray out of mobile screen....just fyi, Incase it's not something deliberate.

Trippledots:
Overheating the controller at max amperage, possible. But overcharging the battery? Nope. Except the charging settings are not set correctly.

On another note, I've noticed some of your posts have fonts that stray out of mobile screen....just fyi, Incase it's not something deliberate.

To see his broken post, use desktop mode from e.g chrome browser.
He types with a computer probably.

Trippledots:
Overheating the controller at max amperage, possible. But overcharging the battery? Nope. Except the charging settings are not set correctly.

On another note, I've noticed some of your posts have fonts that stray out of mobile screen....just fyi, Incase it's not something deliberate.

Not deliberate my dear though na Nairaland's fault. It's their duty at ensuring the platform is responsive enough. Same happens on desktop (which is where I spend over 99% of my time) hence I have to regularly ensure it doesn't occur on desktop at least.

Guess it onlymostly happens when I write like this:

"What is the meaning of Tpain / tPain ?"

…

SenseBoy:
2022 mikano 20kva never been used

Price; 10m.(slightly negotiable).

Location; ajah(Awoyaya)

Contact 0 803 879 9362

Advertising a generator on a solar thread. Make sense of that.

This has changed how I do solar.
Ease of installation, rock solid warranty and geo tags.

https://www.youtube.com/watch?v=JU5Xdehunqs

bassdow:
since he didn't disappoint you, you just might have kept mute. Just ma own opinion sha.

Another is, what if na different sticker you go read online.

Now let me share one of my many tactics when shopping Solar panels.

I only go for maximum of 300-watts. Reason being it's rare getting those over-rated ones in this range. 
Na mostly above 300-watts you go see over-rated. 
I don't blindly TRUST recognized outlets because even if management no do, staffs might not be entirely honest.
if you have taken notice, you would observe I've never suggested anything above 300-watts in here.
Of course, I get a combination of other things I do also.

I no dey too like share such things as dem sef go see am begin upgrade their tactics.

Lolz @keep mute. Bought through him and not from him. He didn't have it in store. They were longi panels and when i entered the bar code on the longi site, came out as 360w panels

Drgreatone:
Lolz @keep mute. Bought through him and not from him. He didn't have it in store. They were longi panels and when i entered the bar code on the longi site, came out as 360w panels

Some of the sellers at the market do this. At least you were experienced enough to cross check this, and also kudos for his quick refund, he could also be a victim too.

SenseBoy:
2022 mikano 20kva never been used

Price; 10m.(slightly negotiable).

Location; ajah(Awoyaya)

Contact 0 803 879 9362

wrong thread

6kva
14.4kwh

Ibadan!

dollarnaira:
To see his broken post, use desktop mode from e.g chrome browser.
He types with a computer probably.

Interesting. Thanks.

bassdow:
Not deliberate my dear though na Nairaland's fault. It's their duty at ensuring the platform is responsive enough. Same happens on desktop (which is where I spend over 99% of my time) hence I have to regularly ensure it doesn't occur on desktop at least.

Guess it onlymostly happens when I write like this:

"What is the meaning of Tpain / tPain ?"

Ok, na you de put code function for the statement na. Na you de cause am. 😂

Drgreatone:
Want to commend @justcallmenuel. Bought some panels through him that ended up bin overated. Supposed to be 440w but checking online showed them as 360w. Returned it back and he refunded me without delay tactics or wasting time.

This is concerning though, Who can you trust, if this happened with the said user, he's been around for as long as I can remember and if such happens with dealers like him granted he rectified the situation, but who can one really trust in this Country?