I bought 4 of this. 100w each. I connect them in parallel but I am only getting 250w at noon. My power tie inverter is 85 % efficient. What is happeni
1042251
Just because the panels are 100 w each dosen'T mean you will receive 100w all the time. 100w is the best you are going to get at top conditions. perfect alinment, perfect sky, alinement faceing sun all the day, so don't expect 100w all the time. There could be a haze between you and the sun,Wire size, conectors , if you are using it to charge batteries, Every thing can efect your wattage.
1042252
I have completed multiple solar installations with lots of monitoring. For normal solar power installations with an excellent solar charge controller and wiring- expect about an efficiency of 75% of the rated output (real world) with short duration peaks above that.
1042253
I have 2 of this and 2 of renogy 100w also and I get same output of around 250 at noon, this might just be normal .
1042254
What kind of charge controller are you using? and how are you measuring the wattage? How long are your wire runs? Make sure you use large wire size....#8 minimum. Are you charging a bank of batteries?
1042255
I cannot help you. The solar panel I purchase was a gift to a Hopi friend of mine who lives on the Reservation here in Arizona. I believe his is working well.
1806277
There are too many variables to give a definite answer. ie. Are you using an individual controller for each panel or one controller for all three? Have you considered back flow from one panel to another? How about voltage or amperage input to the controller(s)? Also, the 128 watts is an ideal, under perfect conditions result. Do not expect to produce this much power. They are good, useful panels, but I don't know of any panels which produce their rated power consistently.
561879
So the actual power is only 200W, not 300W. Your guys just cheating us on this listing!!!
1931402
If there are all going to be on at the same time I advise to use a higher wattage ie 3500 or 4000. If there going to be on at different times... its ok
616969
This is why I hooked my 520 watts of panels in series so you halve the amperage. I can add another 2 panels in the future and still keep it under 30 amps. Remember too that the charge controller can charge a normal 12v battery bank, that's what mine is. I recommend making a 24v panel setup.
890174
You may be using too small of a circuit, or a circuit that doesnt have enough excess capacity based on its current load. Try a different circuit.
1293261
if you are running 2 100's already then you are either running series or parallel then just connect positive and negative this unit claims to be able to handle 30 amps and 150 volts, unfortunately the unit I got crapped out on day 3 it took some time but sainstore says they are sending me a new one hope the new on holds on.
99343
Check the polarity of the connections, also check the load,too much will blow the fuse. It's to protect the inverter.If all else fails call the manufacturer.
2278443
The higher the voltage the more watts you can charge and the smaller the cables need to be. Remember Watts = Volts x Amps so if you wanted 1000W at 12v the cables would need to handle 83.4A where as 1000w at 48V the cables would only have to handle 20.84A. The problem with having a higher voltage set up comes when you start looking for an inverter. It seems that a lot of the more affordable PureSineWave inverters are 12v. The SainSonic only allows up to 24v panels i believe but he TriStar charge controller will allow higher voltage solar panels (48v I believe) to charge a 12v(or 24 or 48) system. The higher the voltage the more watts you can charge and the smaller the cables need to be. Remember Watts = Volts x Amps so if you wanted 1000W at 12v the cables would need to handle 83.4A where as 1000w at 48V the cables would only have to handle 20.84A. The problem with having a higher voltage set up comes when you start looking for an inverter. It seems that a lot of the more affordable PureSineWave inverters are 12v. The SainSonic only allows up to 24v panels i believe but he TriStar charge controller will allow higher voltage solar panels (48v I believe) to charge a 12v(or 24 or 48)... » Read More The higher the voltage the more watts you can charge and the smaller the cables need to be. Remember Watts = Volts x Amps so if you wanted 1000W at 12v the cables would need to handle 83.4A where as 1000w at 48V the cables would only have to handle 20.84A. The problem with having a higher voltage set up comes when you start looking for an inverter. It seems that a lot of the more affordable PureSineWave inverters are 12v. The SainSonic only allows up to 24v panels i believe but he TriStar charge controller will allow higher voltage solar panels (48v I believe) to charge a 12v(or 24 or 48) system. « Show Less
2228315
I've been running one for about a year now, no problems except I was using the load output to control some outside lighting (on at dusk, off at dawn) and it seemed to get confused and was turning the lights on and off randomly. I disconnected it and let it sit for a day and then reconnected it and it has been working correctly since. I am running a 100 WATT 12V panel into it, are you staying within the maximum input power and voltage levels (12v/260W or 24v/520W) specified?
1441839
Either your voltmeter is defective or the solar panels are. Their output should be close to each other assuming they're getting the same amount of sun. 5 watts @ 12 volts should be about 0.4 amps.........voltage output under ideal, sunny, conditions should be in the 10 -14 volt range depending on temperature and amount of sunshine. I assume the wire lengths are the same for each, otherwise the longer the length the lower the output.
2169746
I was running it with a 430w PS, and in only 2 days, my PS literally fried. I was running nearly the same # of drives as you listed...
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
157431
I connect to 24v batteries rather than solar panels to get max 300w out. The batteries are solar charged.
425395
Mine unit is not hot. I'm pulling twice as many watts (~235W). I run for 5 hours. Its sounds like you have a problem, maybe a fire hazard. I'm not sure of the electrical specs, if you have a voltmeter you might try measuring the voltage or amps.
752586
I had 4 on it it worked until I replaced it with a mppt controler. Look at the mppt controllers you can get up to 30 percent more power from the same pannels
1784117
I am charging two batteries(lawn mower size) from the panel through the regulator I am adding a transformer to smooth the circuit,,, it ends at a 1000watt inverter, everything seems good,the panel generates electricity even on cloudy days...MPP