I have two of these 30 panels to power a 1.8 a @ 12 v . pump and a 18 watt 12 v. pump. My VU reads less than 12v. at the voltage regulator. Help!
1420508
The voltage will very based on how much direct sunlight and other conditions.
1420509
are your panels and motors connected to a battery for stabalizing the power.
1420510
Shorten your wiring your losing voltage and check your regulator you also have to check if you pump has a higher surge wattage or voltage to start pump. reposition panels
1420511
Are you using a battery back up? This would help. Also the inclination of the panel per Earth to Sun is important, as day becomes afternoon then evening.
1652740
If your panels are 60 cell, then they should have same voltage characteristics. The only difference will be the current output because of the wattage size. Please send us your panel model number at techsupport@renogy.com and we will be happy to further assist you.
1921285
The panels can supply greater than 30 volts depending on sun. It is the charge controller (also a voltage regulator) that supplies the charge voltage of 12 or 24 volts depending on how it is set. The more voltage your panels can generate the better.
1450265
yes the voltage output will vary with the amount of sunlight. I have my panels setup to produce a max of 36 vdc charging a 12 vdc battery bank. your charge controller needs to match your projected final system capacity, if there is a possibility of adding on later. I have a mix of 144s and 88s
1590572
I've got 4 panels of up to 7 amps each pumping at over 30 volts its doing ok, doesnt get warm.
2205355
Yes - the output voltage is 12 VAC (not 12 VDC as a previous answer stated). But one of the other commenters was correct about the min load. When you just hook up the transformer and test the output without a load, it will read zero, or close to it. I thought the product was broken at first, but one I connected the load, all was well. It's been functioning great since (about 5 months ago).
580820
I recommend you stick with same output V as the original equipment. I don't know what you are powering up, but some circuit board items might not be able to handle the added volts.
1536502
A multimeter shows the V+s are internally shorted as are the COM terminals, though I haven't tried running a 20A load through a single terminal or splitting it.
412104
Contact manufacture of your panels on what the output of both panels would be relative to your Volt/Amp requirements. It has been many years since I used Ohm's law! Good luck! (my connectors are still in the bag, as I had the same question,I received no response when I made my inquiry)
1842768
My panel is 50W, and this controller could handle more. It would make sense to me to wire them in parallel to keep the voltage around 12-14V and double the wattage.
704608
I have no idea but measure whatever setting you chose - with good voltmeter and preferably under load. This power supply puts out twice the voltage the setting indicates. Please use with caution.John
1710280
installed cant read it, but less than the heater for my 10 gallon one which draws 625 watts,which is close to 5 amps @ 110 volts AC
1581548
I'm guessing that the solar panel is the "Source" and the charge controller is the "Load". If so, if the panels are indeed putting out 335 watts, and the voltage is 16.65V, you should be drawing 20 Amps. Perhaps it is a poor connection, or the charge controller is not allowing any current to pass through. If you have a standard multi meter, you could measure the current by allowing the red wires to feed through the meter. (be careful, many meters can't measure more then 10A, and if indeed 20A are flowing, that could burn out the meter.)I use my Watt's Up meter to measure drain from Li-Po batteries connected up to brushless motors and it works great. I'm guessing that the solar panel is the "Source" and the charge controller is the "Load". If so, if the panels are indeed putting out 335 watts, and the voltage is 16.65V, you should be drawing 20 Amps. Perhaps it is a poor connection, or the charge controller is not allowing any current to pass through. If you have a standard multi meter, you could measure the current by allowing the red wires to feed through the meter. (be careful, many meters can't measure more then 10A, and if indeed 20A are flowing, that could burn out the meter.)I use my Watt's Up... » Read More I'm guessing that the solar panel is the "Source" and the charge controller is the "Load". If so, if the panels are indeed putting out 335 watts, and the voltage is 16.65V, you should be drawing 20 Amps. Perhaps it is a poor connection, or the charge controller is not allowing any current to pass through. If you have a standard multi meter, you could measure the current by allowing the red wires to feed through the meter. (be careful, many meters can't measure more then 10A, and if indeed 20A are flowing, that could burn out the meter.)I use my Watt's Up meter to measure drain from Li-Po batteries connected up to brushless motors and it works great. « Show Less
1237913
Check you volts coming from the panels. It should read about 14-15 volts. What type of batteries do you have? Sounds like the problem is with your batteries.
810194
I have had this connected to 2 100 watt panels and four golf cart batteries wired to 24 volts. I have also had it connected to 12 volts on my larger solar system and it works fine although pumps at a slower rate.
616968
Their book specifies Max PV input power 12V/390W or 24V/780W. My PV output is max 18V at 21A. That is 378W (18 x 21 = 378) and does not exceeded their specs so I don't have any experience as far as exceeding the books specs. Going from a 12V to a 24V PV system will double your wattage without increasing your amperage however, in order to use that increased wattage without exceeding the 30A output current, you would also need to change to a 24V battery system. The output is rated at 30A regardless of the input voltage or amperage or battery voltage.
444847
Yes, 30 Volts is Over Voltage for sunforce to Handle it, Most of the solar panel run 18 volts Average, 30 Volts is too much to regulate, it may fry the Regulator.