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Post by bah200018 on Oct 6, 2016 17:48:36 GMT
Hey guys, so I have a whopping 3kw in panels that I got from a company that upgraded. They are missing matched, but hey, panels are panels. Any way, I was also givenjoy 66 sunsaver 6 amp charge controllers in 12v and 10 100ah batteries. (Been with the company a long time) the problem I'm going to run into is I cannot overload the max amperage on the charge controller or KAZOOOWWWWWW! fried controller...if I parallel the panels to peak amp capacity for the controllers then I'm running 26 PAIRS of 12awg wire into a huge conduit, then drilling a massive hole in the side of my brick home to continue the install. However if I parallel every single panel I have 2 massive 0awg wires to run. Much more doable, but then how do I hook in multiple charge controllers without the above mentioned frying taking place. I have Google dc breaker box, regulator, I just need at point in the right direction
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Johann
Junior Member
Posts: 56 
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Post by Johann on Oct 9, 2016 22:48:28 GMT
Miss-matching panels is a very bad idea. The voltage and the amps should be absolutely no more than 10% difference to each other when you parallel or series panels. If you have a 100 watt panel with a nominal 12 volts that panel alone has almost 6 amps by itself. If you only have a 6 amp controller, then you have to make a run like this for every panel..... Panel to charge controller then from charge controller to battery pack. This is a run for 1 panel. Repeat for every additional panel and do not forget your fuses between panel and charge controller and charge controller to battery bank for every run. What voltage and watts do your panels have? Is this going to be a 12 volt system? What voltage and what kind are the batteries? What is the max charge current a battery can have? Many controllers will not blow up or burn up when more amps are available, most controllers either shut down or they throttle the amps back. On the other side, many electronics do NOT run a long longevity life when they have to run a load 100% all the time. Depending on watts of the panels and the distance of the wire, your #12 wire may not be big enough. About the norm.You have 3,000 watts of panels, so your system voltage should be 36 volts nominal. 36 volt is not so common, so the next thing would be to set it up for a 48 volt system or a 24volt system and stress the system. In that case a 12 volt charge controller will not help. 1k of panels=12volt system. 2k of panels=24volt 3k of panels=36volt 4k of panels=48volt It all has to do with keeping the amps low. Higher voltage=lower amps for the same power pushes down the line or the amps pushed to or from the batteries. NO Batteries should be inside a living space. Overcharge and shorts or a bad battery can still produce poisonous gases that can kill you. I smelled my bad very hot AGM sealed battery at my front door where the gases came in from the outside. My batteries are located outside at the back door. Why not to put batteries inside a home. www.nydailynews.com/news/national/woman-girl-died-inhaling-hydrogen-sulfide-coroners-article-1.2817657I inherit 10 AGM batteries and so far every month one battery is dying. AGM batteries do not do so well when hooked up in parallel. |
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