dollarnaira:


What am saying is it doesn't work with all inverters.

And what I say is "if you match with exact rating or more of another mosfet" it should work with ALL nverters.

It's not like there's a sense pin or signal from the mosfet the inverter use to check the replaced one.

Once the installed resistor can fully turn on and drain the mosfet according to the frequency the mosfet are driven, and the mosfet can handle the power they're installed for, the inverter can not tell if the mosfet inside it is Model X or Y

Resistance, D/SCapacitance, Rise Time, etc. Match these closely and replacement should work.

Merry Christmas and a prosperous new year in advance from all of us @Manuel Solar Energy Enterprise

Please which rechargeable fan will you suggest for me?

If it can be possible to charge it with USB, it will be good.

If not please which one would you suggest

@everyone, can an inverter with inbuilt Ac charger, and an external MPPT charger be connected to same battery to charge at thesame time... will it overcharge/spoil the battery... since both will be charging same time.??

kristien4:
@everyone, can an inverter with inbuilt Ac charger, and an external MPPT charger be connected to same battery to charge at thesame time... will it overcharge/spoil the battery... since both will be charging same time.??

No.
Both unit has voltage and current regulation abilities.

I av come again with my curiosity. How do u determine the wire guage from solar panel to charge controller. Gone through different sites and seeing different recommendation. Someone recommended 10mm for use wit 800watts panel that 4mm wud be too small yet google gave a max volt/amps of 1000/36 for a 4mm double core wire. Distance is about 5 to 6m. Thank you for ur kind responses

kristien4:
@everyone, can an inverter with inbuilt Ac charger, and an external MPPT charger be connected to same battery to charge at thesame time... will it overcharge/spoil the battery... since both will be charging same time.??

This is even recommended, as long as both devices (the inverter charger and MPPT controller) won't charge the battery above its recommended max voltage. But the inbuit charger would most times stop charging at 13.5 or even lower, then the controller will charging up to 14.0 and above, as set.

Drgreatone:
I av come again with my curiosity. How do u determine the wire guage from solar panel to charge controller. Gone through different sites and seeing different recommendation. Someone recommended 10mm for use wit 800watts panel that 4mm wud be too small yet google gave a max volt/amps of 1000/36 for a 4mm double core wire. Distance is about 5 to 6m. Thank you for ur kind responses

If you can afford 10mm2, perfect. Otherwise, 6mm2 is good too.

dollarnaira:


What am saying is it doesn't work with all inverters.

It works with all inverters bro, and generally all power converters. Once you can get a matching FET, or even better (voltage, current, on resistance, gate capacitance, rise time etc..) rating, it will definitely work.

The major problem with repaired electronics is that the root cause is often ignored (did something not behave as it was designed to that made the FET go bad?) , or the damage to to FET had resulted to a slight damage of another device (eg. The FET driver), just changing the FET with the same or similar type in either of this case will definitely be a temporary solution.

Drgreatone:
I av come again with my curiosity. How do u determine the wire guage from solar panel to charge controller. Gone through different sites and seeing different recommendation. Someone recommended 10mm for use wit 800watts panel that 4mm wud be too small yet google gave a max volt/amps of 1000/36 for a 4mm double core wire. Distance is about 5 to 6m. Thank you for ur kind responses

1.For every electrical system, your aim should be to have a voltage drop of Less than (<3%).

This is the reason why on this forum, some people have complained of their submersible pumps consuming more power than expected.

2. Your ampacity/current from your solar panels (every wire has an ampacity chart you can check it out). If you have a low voltage and a higher current, the more thicker cables you require and vice versa.

I think this is basically all I can contribute on this

odimbannamdi:


If you can afford 10mm2, perfect. Otherwise, 6mm2 is good too.

Thank you sir. I used to think 10mm2 is an overkill for such small system? But then, is the 4mm a bad choice though?
Do u av a chart or something which I can use and compare. Different things abound in google and its difficult knowing which is right unless one has the basic knowledge.

odimbannamdi:


This is even recommended, as long as both devices (the inverter charger and MPPT controller) won't charge the battery above its recommended max voltage. But the inbuit charger would most times stop charging at 13.5 or even lower, then the controller will charging up to 14.0 and above, as set.

Thanks

Obnoxious2001:

1.For every electrical system, your aim should be to have a voltage drop of Less than (<3%).

This is the reason why on this forum, some people have complained of their submersible pumps consuming more power than expected.

2. Your ampacity/current from your solar panels (every wire has an ampacity chart you can check it out). If you have a low voltage and a higher current, the more thicker cables you require and vice versa.

I think this is basically all I can contribute on this

Thank you. Do u have a wiring chart i can use?
Panels are connected in series so sud at optimum conditions be getting abt 64v wit about 12amps? Same panel size in 2 different installations having 2kva12v and 4.2kva24v hybrid inverter with both 4mm2 wires coming from the panel. Yet the 4.2 gets higher solar volt input abt 55v compared to abt 30 in the 2kva.

Obnoxious2001:

No.
Both unit has voltage and current regulation abilities.

Thanks

bbeckky:
Good morning fam.
Pls I need help from the experts in the house. Few months ago, my inverter (1.2kva) got damaged by thunder. We called the installer and he said the company doesn't have the board available as at then that we should buy sachet inverter pending when they'll have it. But we decided rather than buying a sachet inverter that we shud fix it elsewhere. But ever since we got this new board it has never worked well, if we put on the TV, it'll say overload, we can't do fan and TV concurrently, it'll be screaming overload. We have returned this inverter more than 3times for the guy to fix the issue yet nothing. This last time is even worst, we can't put on ordinary light, it's not powering anything at all. And now Alaba has closed till next year. Pls any idea what we can do because it's really frustrating me

Please Pardon my curiosity o.

This one I'm seeing thunder there, hope it didn't directly strike your device?

And please what should one do to protect solar system against thunder

dollarnaira:


My neighbour's style is better

i see shades coming through for the panel…. The positioning seems off

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mikeayus:
Please which do you think is better Powmr or Felicity MPPT Charge controllers?

I may be biased, but I'll say it is PowMr. This is because I have a friend that was having so many issues with his Felicity charge controller, but when he changed to PowMr, the problem disappeared.

temizeee:
i see shades coming through for the panel…. The positioning seems off

He was in a tight corner
Your position is different
The idea is the point

mctfopt:


I may be biased, but I'll say it is PowMr. This is because I have a friend that was having so many issues with his Felicity charge controller, but when he changed to PowMr, the problem disappeared.

Okay,thanks for this response.

Get a good sachet inverter
I replaced a 1.5kv Schneider Homaya (that has been with Schneider since July) with one and the difference is clear.
Battery lasts longer, less wahala.

bbeckky:
Good morning fam.
Pls I need help from the experts in the house. Few months ago, my inverter (1.2kva) got damaged by thunder. We called the installer and he said the company doesn't have the board available as at then that we should buy sachet inverter pending when they'll have it. But we decided rather than buying a sachet inverter that we shud fix it elsewhere. But ever since we got this new board it has never worked well, if we put on the TV, it'll say overload, we can't do fan and TV concurrently, it'll be screaming overload. We have returned this inverter more than 3times for the guy to fix the issue yet nothing. This last time is even worst, we can't put on ordinary light, it's not powering anything at all. And now Alaba has closed till next year. Pls any idea what we can do because it's really frustrating me

jonescosmos:
Nice Question Bro.

This is because the 16KW I had was from JustStandout (A dealer in Lekki, Lagos), and I noticed that once I go Off-Grid the Inverter could not handle load above 12KW, I did everything I could but no avail. I contacted JustStandout, they could not help, they kept upgrading the inverter from one firmware to the other. I contacted Deye Support and they upgraded the Inverter to the Latest Firmware and the problem continued.

I disturbed Deye Support so much until they asked me to open up the inverter and send pictures of the PCBs inside the Inverter.
I did exactly so and I discovered that the power board inside the Inverter is of the 15KW US Version which is the SunSynk 15k-2P and has a UPS Backup load power of 12Kw Max. Which was why I could not go beyond 12Kw while Off-Grid.

The Inverter was sold to me as the 16KW EU Version which has UPS Backup Power of 16KW only to discover that the PCB is US version. It was clear to me that either JustStandout has scammed me or they got scammed by their supplier and they passed it on to me. Because I engaged them after this discovery and they sounded not to have any idea about these technicalities.

After weeks of words battle with them, I decided to place an Express Order from Deye for the 2units of 8KW EU Version which each has a UPS power of 8KW, because I didn't want to fall another victim to the 16KW Scam.

I received them and deployed them as shown in the picture and then I decided to ship out the 16KW to my house in the Village to be deployed later this year. Since I don't base there. At least no yet. hahahaha

As for the CC, I use the inbuilt MPPTs. Although I miss the inbuilt 3x 290A MPPTs of the 16KW because the 8KW has inbuilt 2x 190A MPPTs each. The 16KW starts sucking solar energy as early as 6am as is capable of guzzling everything that looks like energy from the panels, while the 8KW waits till around 9am at times to start picking up solar energy and cannot go beyond it's 190A capacity.

Please where did you order these 8kW from?
Did you order directly from them or you ordered through a 3rd party?

gadgetplanetng:
Get a good sachet inverter
I replaced a 1.5kv Schneider Homaya (that has been with Schneider since July) with one and the difference is clear.
Battery lasts longer, less wahala.

Which one be sachet inverter again?

10mm for 800w is an over kill.
4mm is ok for it especially if you're doing more of voltage than current.
Some inverters manufacturers are more doing inverters with higher PV voltage and less current with recommendations of 4mm from the Solar panels to the inverter.

Drgreatone:
I av come again with my curiosity. How do u determine the wire guage from solar panel to charge controller. Gone through different sites and seeing different recommendation. Someone recommended 10mm for use wit 800watts panel that 4mm wud be too small yet google gave a max volt/amps of 1000/36 for a 4mm double core wire. Distance is about 5 to 6m. Thank you for ur kind responses

First you look at how you are arranging your solar panels in series and parallel.

Say you had 4 units of 550w panels in 2S2P, it would call for a different cable gauge than if you had them in 4S over thesame distance.

So you look at the max amps your panel will generate - in the 550w panel case about 13.5a per panel so if you had a 2S2P arrangement you would be sending 26a from solar panel to charge controller - that calls for a 6mm2 cable as minimum gauge to carry that 26a then to have a less than 3% voltage drop you may need to upsize to 10mm2 (depends on distance and you use a voltage drop vs distance chart for this).

If you were setting same panels in 4S for a max amps of 14a but much higher voltage then a 6mm2 cable would be perfectly fine even across a relatively large distance (again the charts will tell you minimum cable gauge to maintain X% voltage drop over X distance).

In this 4S config you could even get away with 4mm2 cable but I would not recommend.

This above is the general science - for your 800w situation how many panels do you have? What are the panel VmP and lmp (current) and how do you plan to arrange the panels? 2 in series then 2 in parallel or 4 in series? We can know your exact cable gauge needed if you answer these questions.

Drgreatone:
I av come again with my curiosity. How do u determine the wire guage from solar panel to charge controller. Gone through different sites and seeing different recommendation. Someone recommended 10mm for use wit 800watts panel that 4mm wud be too small yet google gave a max volt/amps of 1000/36 for a 4mm double core wire. Distance is about 5 to 6m. Thank you for ur kind responses

Ferdiwar:
10mm for 800w is an over kill.
4mm is ok for it especially if you're doing more of voltage than current.
Some inverters manufacturers are more doing inverters with higher PV voltage and less current with recommendations of 4mm from the Solar panels to the inverter.

Thank you sir

NiyiOmoIyunade:
First you look at how you are arranging your solar panels in series and parallel.

Say you had 4 units of 550w panels in 2S2P, it would call for a different cable gauge than if you had them in 4S over thesame distance.

So you look at the max amps your panel will generate - in the 550w panel case about 13.5a per panel so if you had a 2S2P arrangement you would be sending 26a from solar panel to charge controller - that calls for a 6mm2 cable as minimum gauge to carry that 26a then to have a less than 3% voltage drop you may need to upsize to 10mm2 (depends on distance and you use a voltage drop vs distance chart for this).

If you were setting same panels in 4S for a max amps of 14a but much higher voltage then a 6mm2 cable would be perfectly fine even across a relatively large distance (again the charts will tell you minimum cable gauge to maintain X% voltage drop over X distance).

In this 4S config you could even get away with 4mm2 cable but I would not recommend.

This above is the general science - for your 800w situation how many panels do you have? What are the panel VmP and lmp (current) and how do you plan to arrange the panels? 2 in series then 2 in parallel or 4 in series? We can know your exact cable gauge needed if you answer these questions.

Thank you boss. Its just 2 415watt panels with 32v and abt 13amp connected in series. Used a 4mm double core wire. Saw that it can take up to 1000v and abt 30amps online, just needed ppl's personal experience/choice.

The online voltage drop calculators say that you are fine.

If your transmission distance increased more than 6m one way, the answer could change quickly.

Drgreatone:

Thank you boss. Its just 2 415watt panels with 32v and abt 13amp connected in series. Used a 4mm double core wire. Saw that it can take up to 1000v and abt 30amps online, just needed ppl's personal experience/choice.

NiyiOmoIyunade:
The online voltage drop calculators say that you are fine.

If your transmission distance increased more than 6m one way, the answer could change quickly.

Thank you sir

mctfopt:


Try another repair centre or go to Arena and get the inverter fixed. The guy you keep returning it to may actually not be doing anything to it or simply incapable of fixing this issue.

Actually why I kept returning it to him is because he fixed the board for 45k and I thought I should be able to get value for that money. I told him to change the board actually because it seems the board he used is t a match.

Good day people, please i want to find out if Yohako hybrid inverter especially the 3.5kva/24v has that feature of remote monitoring. I see it has a rs323 in the pack. i just want to be sure before proceeding to buy the wifi module.

Stay away from yohako product. There are lots of substandard products under yohako umbrella, there no way u u can figure out the good one.
This features u mentioned is on growatt, powmr, felicity, srne etc n price is budget as well.

obitobe:
Good day people, please i want to find out if Yohako hybrid inverter especially the 3.5kva/24v has that feature of remote monitoring. I see it has a rs323 in the pack. i just want to be sure before proceeding to buy the wifi module.