Valto:
simply double the highlighted, and u will have a perfect system. 700k can do this..

Thanks

ceaser:


Abeg, which decoder dey chop 30 watts? Na those old type of decoders Una dey use?

Except it's DSTV PVR decoder which I believe won't even fully gulp more than 15w to 20w consumption, most other decoders are in the range of 3 watts, 4 watts

If your 43 inch TV has energy saving option and you get it activated, you can end up with lower consumption of between 40 watts to 45 watts.

only hdd on pvr takes about 15-25w. unless is ssd which am yet to see and will be costly than the entire pvr. the only way a decoder can consume 10-15w is when you have one LNB. each LNB consumes about 5-10w depending on the size. having multiple LNB means more consumption

JUO:
100ah/12v lithium battery available
Maximum charge current 50A
Maximum discharge current 50A
Maximum charge voltage 14.8v
low voltage disconnect 10v
over 3000 on cycle at 80% DOD
Weight 13kg
Cell: 32650
Price 170k

actual capacity is 112ah
080-987-337-09

JUO:
Variable charger 40A
2v-17v price 45k

080-987-337-09

JUO:
80a Fangpusun 150k
60a Fangpusun 125k
3.5kw/48v XTM 460k
5.5kw/48 XTH 930K

080-987-337-09

Time of use and cooking with solar power. I cook lunch an dinner on my solar. Now I run 2 AC to get max production. I intend to double my batteries and PV. Enjoy the video

https://www.youtube.com/watch?v=pcxTDrOY9pQ

ojeysky:


Nope with 6 panels it's either 3s2p or 2s3p

Progress report...

So I hired someone to climb the roof to rearrange the panels. He connected two in parallel and two in series and the two arrangements in parallel. I was a bit confused. I thought he was supposed to connect 2 in series, the other two in series and the two arrangements in parallel; he said it's the same thing.

Open circuit voltage of the panels are 18.0V. 8.3amps current.

I have a multimeter and tested the connected panels (disconnected from CC) they read between 18 to 20V. When connected to the CC, it's showing between 15 to 17v; and this was in the afternoon when the sun was supposedly at peak.

I think this may not be right.

chris81964:
Time of use and cooking with solar power. I cook lunch an dinner on my solar. Now I run 2 AC to get max production. I intend to double my batteries and PV. Enjoy the video

https://www.youtube.com/watch?v=pcxTDrOY9pQ

I love the "time of use" feature on the inverter, in my case I use solpiplog to schedule that for my inverter. What kind of cooker are you using that is consuming 1.2kw? Is it the typical ones as I think those consumes more than that?

IYGEAL:



Progress report...

So I hired someone to climb the roof to rearrange the panels. He connected two in parallel and two in series and the two arrangements in parallel. I was a bit confused. I thought he was supposed to connect 2 in series, the other two in series and the two arrangements in parallel; he said it's the same thing.

Open circuit voltage of the panels are 18.0V. 8.3amps current.

I have a multimeter and tested the connected panels (disconnected from CC) they read between 18 to 20V. When connected to the CC, it's showing between 15 to 17v; and this was in the afternoon when the sun was supposedly at peak.

I think this may not be right.

If that is the rating on each panel then after the 2s2p setup your multimeter should read above 30v (18x2) unless it's not sunny or you have significant shading

IYGEAL:



Progress report...

So I hired someone to climb the roof to rearrange the panels. He connected two in parallel and two in series and the two arrangements in parallel. I was a bit confused. I thought he was supposed to connect 2 in series, the other two in series and the two arrangements in parallel; he said it's the same thing.

Open circuit voltage of the panels are 18.0V. 8.3amps current.

I have a multimeter and tested the connected panels (disconnected from CC) they read between 18 to 20V. When connected to the CC, it's showing between 15 to 17v; and this was in the afternoon when the sun was supposedly at peak.

I think this may not be right.

@ highlighted, very wrong connection.

IYGEAL:



Progress report...

So I hired someone to climb the roof to rearrange the panels. He connected two in parallel and two in series and the two arrangements in parallel. I was a bit confused. I thought he was supposed to connect 2 in series, the other two in series and the two arrangements in parallel; he said it's the same thing.

Open circuit voltage of the panels are 18.0V. 8.3amps current.

I have a multimeter and tested the connected panels (disconnected from CC) they read between 18 to 20V. When connected to the CC, it's showing between 15 to 17v; and this was in the afternoon when the sun was supposedly at peak.

I think this may not be right.

Na proper muR...N did that connection. Hope he wasn't high when he climbed the roof?

ojeysky:


I love the "time of use" feature on the inverter, in my case I use solpiplog to schedule that for my inverter. What kind of cooker are you using that is consuming 1.2kw? Is it the typical ones as I think those consumes more than that?

I have an air fryer. It allows me to cook without oil (minimal)

ojeysky:


If that is the rating on each panel then after the 2s2p setup your multimeter should read above 30v (18x2) unless it's not sunny or you have significant shading

That's what I thought too. I guess it's still using the voltage of just one of the panels.

Please get me clarified on how this 2s2p arrangement is practically done. My suggestion was that the panels be divided in two, each of the groups be connected in series and then the series arrangements be connected in parallel... Is this correct?

Oshomo12:


Na proper muR...N did that connection. Hope he wasn't high when he climbed the roof?

I don't think so

Valto:
@ highlighted, very wrong connection.

We'd rearrange

IYGEAL:


That's what I thought too. I guess it's still using the voltage of just one of the panels.

Please get me clarified on how this 2s2p arrangement is practically done. My suggestion was that the panels be divided in two, each of the groups be connected in series and then the series arrangements be connected in parallel... Is this correct?

The attached picture is 4s2p that's to give you example of how the wiring should look like.

ojeysky:


The attached picture is 4s2p that's to give you example of how the wiring should look like.

Okay. This is helpful.

Thank you very much.

ojeysky:


The attached picture is 4s2p that's to give you an example of how the wiring should look like.

Good illustration!

@IYGEAL, hope u get it?

Hope the MC4 connectors are not chopped off already(i strongly doubt this)

Paralleling should be done with a Y-connector.

Oshomo12:


Good illustration!

@IYGEAL, hope u get it?

Hope the MC4 connectors are not chopped off already(i strongly doubt this)

Paralleling should be done with a Y-connector.

The initial connection wasn't done with those.
They were apparently thrown away. All 4 panels were bought 3 years ago and have been in use since.

Today, on trying to rearrange, we found that some of the wires are having partial contact, then got them replaced with 6mm flexible wires.

How many cycles is it rated at 80% DOD?

actual capacity is 112ah
080-987-337-09[/quote]

Sample of what a poor hervest day can look like, sun was not smiling at all

ojeysky:
Sample of what a poor hervest day can look like, sun was not smiling at all

AE has made uncle change the meaning of "sun is not smiling".

Leopantro:


Thanks a lot.
No wonder you don't need the BMS
Have ordered for a battery tester

The BMS is still important. The most likely scenario where you may be spared a BMS in a Lithium set-up is in strictly 1s config, that is nominal of 3.2v like it's used in mobile phone power banks. The moment you are going 2s and more config, you will require a BMS cos the cells in the series connection get exposed to different charge and discharges over time and end up with as low as 0.2v differences in voltage. This is more pronounced at deep discharges where you may end up having as much as 1 volt differences between cells connected in series.

At such huge voltage differences and without a BMS, the cells with lower voltage end up getting further undercharged and over-discharge with each cycle until they get bad and then pull down the good cells along with themselves.

He may have gotten away with 7s config for that long because he does not deep discharge his pack or even discharge it so much, perhaps just a discharge of as low as 1v per discharge cycle. Indeed with a 100p pack, it is interesting to me.

That being said, even with BMS installed, it is not advisable to make deep discharge of your Lithium pack a habit. The stock BMS has tiny resistors that short and work with MOFSETs to balance the batteries and at huge voltage differences of cells, the small resistors may be inadequate to balance. In such instances, you may even notice that your series cells when measured have differences as much as 1v. Taking them out and manually balancing them using big resistors or balancers may then be required.

ojeysky:


Tell me more about that inverter freezer, thermocool? Or LG?

The watercolour was necessary cos I once bumped on a picture I uploaded on NL used for something I didn't put up on Jiji.

JUO:
only hdd on pvr takes about 15-25w. unless is ssd which am yet to see and will be costly than the entire pvr. the only way a decoder can consume 10-15w is when you have one LNB. each LNB consumes about 5-10w depending on the size. having multiple LNB means more consumption

Thanks. There's no end to learning.

chris81964:
Time of use and cooking with solar power. I cook lunch an dinner on my solar. Now I run 2 AC to get max production. I intend to double my batteries and PV. Enjoy the video

https://www.youtube.com/watch?v=pcxTDrOY9pQ

Nice job.

@ 43 sec, you mentioned "the 1 horsepower inverter AC that is barely performing..."

Was that a derogatory or complement for the inverter AC?

Those batteries that are 100% full at around 1pm, what is the capacity?

IYGEAL:



Progress report...

So I hired someone to climb the roof to rearrange the panels. He connected two in parallel and two in series and the two arrangements in parallel. I was a bit confused.

Ha! Hope say you never even put am on top the system.

IYGEAL:

I thought he was supposed to connect 2 in series, the other two in series and the two arrangements in parallel; he said it's the same thing.


I think this may not be right.

You thought right. He made wrong connection. Please let him correct it. And I hope MC4s are used.

Edited: seen that responses have been given.

chris81964:
Time of use and cooking with solar power. I cook lunch an dinner on my solar. Now I run 2 AC to get max production. I intend to double my batteries and PV. Enjoy the video

https://www.youtube.com/watch?v=pcxTDrOY9pQ

Superb inverter, made by China.
China is vexing these days.
Producing premium products at non premium price.
The german or american version of this would cost a section of ones liver

Wait for the day Niyiomolade would go fully chinese .

ceaser:


The watercolour was necessary cos I once bumped on a picture I uploaded on NL used for something I didn't put up on Jiji.

hahahahahah at water, dude you harsh o.
You yaff joined the watermark geng...
Freezer wey anybody can walk into a shop and snap picture , this is a bit different from installation pics

ceaser:


Ha! Hope say you never even put am on top the system.



You thought right. He made wrong connection. Please let him correct it. And I hope MC4s are used.

Edited: seen that responses have been given.

Thank you for your responses.

Thanks to everyone that contributed, especially Chief Ojesky.

2s2p connection has been correctly done and the difference is so glaringly massive.

No MC4s were used. The connectors were originally chopped off. I hope this one serves for the time being as going up the almost vertical high roofs is quite difficult.

Cheers

IYGEAL:


Thank you for your responses.

Thanks to everyone that contributed, especially Chief Ojesky.

2s2p connection has been correctly done and the difference is so glaringly massive.

No MC4s were used. The connectors were originally chopped off. I hope this one serves for the time being as going up the almost vertical high roofs is quite difficult.

Cheers

happy ending!!.
i usually say it that most installers dont understand the physics behind what they are doing, hence NA SO WE DEY DO AM IS THEIR MOTTO..

they dont understand difference btw mppt and pwm cc, an dont bother reading manual as well..hence they treat and connect every CC as pwm..

ignorance aint bliss, as the homeowner pays the price of his and their ignorance!!

who is using the UKA rechargeable fan?
bought it for my people some moons ago, now the switch has developed issues.
how were you able to repair the switch?. youtube is just showing how to replace the faulty switch