How do i stack another 40 amp controller to the one i have so I can stay 12v and add more panels?? Don't know how to wire the controllers together.
649909
I need more information than you are supplying to help. In short 40 amp is about 400 watts give or take. I use this controller and have had very good results, however I chose to change my legacy system to 24 volt rather than stay 12 as it provides several advantages. By reducing the number of batteries in series it allows for a better electron flow assisting in keeping the batteries balanced. My Solar array consists of 3 250 watt 30 volt black panels I got from Amazon, they are in series feeding this controller. I have 8 390AH flooded 6 volt batteries, they are configured 4 in series with two banks of 24 volts in parallel. This configuration allows for a more even charge all my batteries are now testing at full charge. When I bought this place the previous owner had 6 batteries in a 12 volt configuration and I found that only 2 to four of the 6 were getting fully charged. The batteries at the negative end were absorbing properly but the farther down the battery array the batteries never fully charged. It also increased the amperage so I have now have more available power. I also have a 850 watt wind generator tied in parallel to my solar array running to this charge controller. Since I went to this configuration I have not run out of power once, making my bride happier. I can now run my welder and other power tools life is good. If you feel you truly need to add a second controller you simply parallel the output of the controllers together. Hope this helps.
306604
If there are only 2 (12 Volt) panels; you could put both wires in the "solar panel" connectors. For more panels I would suggest you get wire nuts. Wire nuts allow you to connect many panels together (in parallel) without any wires slipping out. The kind of wire nut is the bolt kind, a slotted screw with a nut to crimp a few wires together for a tight electrical bond. Have a thicker gage wire going from the wire nuts (+ & -) to the controller.
1771957
No I would use both solar panels Parallel to each other and use only one controller. Make no sense to use two separate controllers. Un less the panels produce more then 30A each.
1573752
You have to put them in parallel to maintain 12 volts in the system.all positive together all negative together.assuming you're inverter and charge controller is 12 volts
30432
It's made for a 24 volt charge controller. If you just have a 12 volt controller get 2 100 watt panels from home depot and wire them in parallel.
1872882
You can hook them up together in PARALLEL, so that the total voltage output is still 12 volts. I would wonder why you would want to? Remember that solar panels are primarily used to keep batteries charged and this panel, at max output will provide you with 12 volts at 10 amps, plenty to charge or keep a battery charged. I would spend my money and buy a bigger battery or several batteries you can hook together in parallel.
426996
Yes you can hook them up together in parallel and the voltage will remain the same but the amperage will be 4 times that of one panel. You will definitely need a charge controller with what is going to amount to 80 watts of panel input to the battery. It might be helpful to know more specifics about what you plan to do. If you want to just keep a battery up this is far more panel than you need. If you plan to use the battery daily to power things than 80 watts may or may not be sufficient depending on the size of the battery, the wattage/amperage draw of the loads, and how much daily sun you anticipate. There are a lot of variables. You will also definitely need fuses for fire safety. Hope this helps. BTW, it might be cheaper to buy a singe 80 watt panel as opposed to four 20 watt panels.
117612
My understanding is that 4 panels can be linked together but no more without having a separate controller. Call the company, their customer support is amazing.
1680254
we have to 120 volt panels hooked up to a 30 amp Sunforce controller. I should say for every two panels we have a 30 amp controller
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.
1293262
You will need a copper buss bar and some mc4 connectors. Run the positive wires in 10 gauge wire from the panels to the copper buss bar then a 8 gauge stranded copper wire from the buss bar to the charge controller. You can get a mc4 tee connector to tie the negative wires together and run one wire to the location of the charge controller. Do not do this for the positive wires from the panels to the controller, that's what I Sid first and found out a couple weeks later I was only getting power from one panel.
1947082
Should work it is pushing the controller hard but I am doing (1) 255 watt panel with a 12 volt system and works fine good luck.Lon
1696515
If you plan to add more panels, you will need to use a bigger charge controller or stack another charge contorller. This charge controller only only fit 240W and 480W for 12volts and 24volts system.
974747
Yes you can however you will need a controller capable of handling both panels. Most small inexpensive charge controllers handle 7 amps or less. Two 60 watt panels will produce more than 7 amps on a sunny day.
37583
you can use an inline amp. with those you can make it as long as you want. but I'm using this controller to light up 2 16 feet stands of 5050
1616609
I have two of them wired into the charge controller via "RENOGY® 20ft. Adaptor kit Solar Cable PV with MC4 Female and Male connectors Connecting Solar Panel to Charge controller". Works great. Make sure the controller can handle the amps.
1873944
I think you need to check your controller specs, but I know some controllers may just shut off to prevent damage. Also note these panels are higher voltage which may not be compatible with your controller. I bought a charge controller that won't work with these because the voltage may go up to 45V on these panels. Now I run two of these with the Morningstar MPPT 45A charge controller. Morningstar has a calculator on their site that will confirm whether a planned setup will work with their charge controllers or not. I am planning on adding one more panel to my setup. The 45A MPPT charge controller can handle 3 of these panels. Good luck!