just want a clarification on a puzzling issue..i have a 12v inverter system, and bought 4 units of 24v 250w panel, which i intend to use with this CC, but I hv been informed that this CC cant handle my proposed setup just want a clarification on a puzzling issue..i have a 12v inverter system, and bought 4 units of 24v 250w panel, which i intend to use with this CC, but I hv been informed that this CC cant... » Read More just want a clarification on a puzzling issue..i have a 12v inverter system, and bought 4 units of 24v 250w panel, which i intend to use with this CC, but I hv been informed that this CC cant handle my proposed setup « Show Less
428699
The MPPT-45 is really too small for 1KW solar pushing down to 12V. 600w of solar is the peak for that setup. So you need to get the FM-80 by Outback (1250w capacity) Thanks,
576629
If you have 4 250 watt pannels at 24 volts that is 1000 watts at 24 volts. That would be a total current into the charge controller of 41.66 amps which would be within the 45 amp limit. However on a 12 volt system it is charging the batteries at (1000 watts / 12 volts) 83.3 amps which is beyond the charger controllers specified ratings. If you went to a 24 volt system it would work otherwise you would have to have 2 of these (2 panels per charge controller)
576630
Zubby,This controller can handle up to 125 open circuit volts input. You can series your panels together to get a theoretical voltage of 96 volts, this will have less voltage drop and give you approximately 10 1/2 amps on the input side of the controller. Your problem is with a 12 volt battery bank your amperages on the output of the controller could exceed 80 amps ( 1000 watts divided by 12 volts equals 83.3 amps ). You would need (2) of these controllers with your present configuration. If it is possible; you could make your 12 volt battery bank into a 24 volt battery bank and get a 24 volt inverter, then you would need only (1) controller. ( 1000 watts divided by 24 volts equals 41.6 amps ) Zubby,This controller can handle up to 125 open circuit volts input. You can series your panels together to get a theoretical voltage of 96 volts, this will have less voltage drop and give you approximately 10 1/2 amps on the input side of the controller. Your problem is with a 12 volt battery bank your amperages on the output of the controller could exceed 80 amps ( 1000 watts divided by 12 volts equals 83.3 amps ). You would need (2) of these controllers with your present configuration. If it is possible; you could make your 12 volt battery bank into a 24 volt battery bank and get a... » Read More Zubby,This controller can handle up to 125 open circuit volts input. You can series your panels together to get a theoretical voltage of 96 volts, this will have less voltage drop and give you approximately 10 1/2 amps on the input side of the controller. Your problem is with a 12 volt battery bank your amperages on the output of the controller could exceed 80 amps ( 1000 watts divided by 12 volts equals 83.3 amps ). You would need (2) of these controllers with your present configuration. If it is possible; you could make your 12 volt battery bank into a 24 volt battery bank and get a 24 volt inverter, then you would need only (1) controller. ( 1000 watts divided by 24 volts equals 41.6 amps ) « Show Less
576631
Purpose of a charge controller is to charge a battery. This charge controller can handle battery banks from 12v to 48 volt. you can connect all 4 panels to this CC in series. However you will need 2 of these CC or convert your system to a 24v. Inverter needs to connect to the battery and NOT to the CC.
1969171
Yes- I have connected a 240w panel (30V @ 8amps) and also two 135w panels (total 35V @ 3.8amps each) and it works fine. The limiting factor that may cause the confusion is that the maximum output is 240watts (12V @ 20amps) if you are connected to 12V batteries. In my case, I was connected to a 24V battery bank and was dumping about 17amps at 26volts into the batteries when I had all panels connected (the 240W + 2x130w). For the money the controller works well. If you connect to 12V battery; 240w is maximum; if you connect to 24v battery you can get 480w. It doesn't support over 32 volts, so you can't use a 48V battery bank. Yes- I have connected a 240w panel (30V @ 8amps) and also two 135w panels (total 35V @ 3.8amps each) and it works fine. The limiting factor that may cause the confusion is that the maximum output is 240watts (12V @ 20amps) if you are connected to 12V batteries. In my case, I was connected to a 24V battery bank and was dumping about 17amps at 26volts into the batteries when I had all panels connected (the 240W + 2x130w). For the money the controller works well. If you connect to 12V battery; 240w is maximum; if you connect to 24v battery you can get 480w. It doesn't support over 32 volts, so... » Read More Yes- I have connected a 240w panel (30V @ 8amps) and also two 135w panels (total 35V @ 3.8amps each) and it works fine. The limiting factor that may cause the confusion is that the maximum output is 240watts (12V @ 20amps) if you are connected to 12V batteries. In my case, I was connected to a 24V battery bank and was dumping about 17amps at 26volts into the batteries when I had all panels connected (the 240W + 2x130w). For the money the controller works well. If you connect to 12V battery; 240w is maximum; if you connect to 24v battery you can get 480w. It doesn't support over 32 volts, so you can't use a 48V battery bank. « Show Less
1794618
NOT SURE ,, BUT ITS SOUND LIKE you have the right amount connected.. to you inverters. i think they are faulty inverters truly i think they are not ment to last a long long time.. i may be wrong.. because i have the same inverter and its still working bin 3 month.. will have to see how long they last..
2193078
I purchased this same inverter with hope to use 4 Renogy 240 watt PV panels. It could work but you need to add up the total Amps output for each panel which was 7.7 x 4 =30.8 amps. you will need to have a circuit breaker that will handle this amount of Amps or your circuit will trip. I decided to use different technology. Good Luck with your project.
460173
I just entered the same boat your in. My cobra 2500watt inverter shuts down on a "low voltage warning at 11 volts ! thats terrible. I am researching what specific inverter is needed for a solar charge system like you and I have. The problem im seeing is that all inverters I have researched are factory built with this bull crap :low voltage auto shut down".Another problem is that none of the jack azzes who sell these solar charge set ups want to answer any of my questions.have you figured out what type of inverter to use for a solar charging system?
409642
If you are using 4 panels with this kit it only uses a 20 amp controller. You must be using a 24v battery bank to use up to 400 watts. Can you explain your situation a little more? We are a bit confused with what setup you have. Thank you. AW
1687736
Many issues. 36K here is an inverter model. Also it is much more expensive to build to be able to reach to that capacity in a limited space. Main reason is the economies of scale rule. Consider buying 2 sets of 018 models instead.
1685481
I see its states 12/24 volts.,100volts, woow that's a lot.,,yes Pv power refers to the solar panels as far as I understand.,i have a 12volt system.,with one 100Watt panel.,you have 24volts, so what are you confused about. you have another 76 volts to go before you could have problems.,,,LOL...Hope this helps.,we are all learning.,,
1680257
Leon-I have had two sets of two 145W panels running through my two Sun-Force Controllers since Jan 2013 and have had no problems. The directions on the box say that they can handle up to 440w ea. and I'm at 290W. I plan on hooking one more 145W panel to each of my two controllers so I'll then have 435W on ea. panel? I'll see what happens. I have been very happy with my setup and I bought all of it through Amazon. As I saw mentioned in one or more of the other responses, I would run two panels to one controller like I have not four to one controller. Good luck
323419
I cannot speak to the inverter issue but if outputs 60hz 1120v current it should work fine. The power setting are extremely consistent if set on temperature they are within two to three degrees of the indicated temperature almost always on the high side(i.e. if set at 80 degrees F the actual temp with my unit will be 82 degrees. Overall it seems to be of high quality.
830726
Depends on the voltage that you want to set up your battery for. A 12VDC battery, you can get away with 2 safely, 3 pushing it. For a 24VDC battery, you can handle 5 panels. You need to include all information in the question for a definate answer, but this is what you wanted.
409921
If your batteries are connected in series to give 24 V DC, I would not recommend that you use this inverter because it is meant to be used with a 12 V DC supply. Instead you may want to find a 24 V DC to 110V AC Inverter such as the "Power Bright ML1500-24 1500 Watt 24 Volt DC To 110 Volt AC Power Inverter". Amazon has this product also. If in doubt, have an electrician assist with the installation.
1662101
This is not a good option, I'm sorry. I suggest looking for a 10watt 12v panel that discloses the actual specifications of the unit. The output voltage is undisclosed and I had very irregular performance.Hope this helps...good luck.
1233768
Dont know if i understand your question. But it doesn't sound like it would work because one 12v panel wont charge 24v battery unless you connect two 12v panels in series.
1318350
The instructions doesn't give enough explanation. I called the company for my inverter and asked if solar is compatible with their inverter hooked up to the charge controller. They said to keep the inverter connected to the battery. The only thing I can think of is using a 12 volt light or a small apliance could be connected directly to it instead of using the battery power. If a 12 volt light is connected directly you are taking advantage of the solar imediatly. If the same light was connected to the battery instead, the charge controller doesn't let the solar charge the battery until it drops to a certain voltage. So solar panel isn't being used to its full advantage.
289546
From my panels, I go to a junction box. From the Junction I use #4 wires to my DC fuse box. From the fuses ( 4 at all) with #6 to each of my 4 inverters. But the final size depends of your distance from the Panels and the max supplied amps from the panels. Consult a certified electrician in your area...Hope this help..Shifu Castro
123868
It only works for the described voltage. The unit set for 22-60v is designed to be used with a series system of 12v panels so that the voltage rarely drops below 22. If you have a simple solar system (12v) then you would want to get the inverter with a lower operating range.