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  • Ho jo
    Solar Fanatic
    • Nov 2017
    • 156
    #16
    With 400 watts all aimed in the same direction my amps peaked at 26.
    In a SE SW orientation peak amps would be
    less.
    A 100 volt 30 amp controller would be well matched.

      Comment

      • redbank
        Junior Member
        • Jun 2020
        • 10
        #17
        So if I used a branch connector and positioned two 100w panels SE and two 100w panels SW and used my better CC (rated at 400w maxium input power and 42v maxium solar input voltage) I should be okay? The CC notes there is an overload protection if it matters.

        Second question, if I find myself running my single 105ah 12v battery low during a weekend with bad weather do I wire it up in series or parallel?

          Comment

          • Mike90250
            Moderator
            • May 2009
            • 16020
            #18
            With the specs you mentioned earlier, you can only run all 4 panels in parallel. 2 in series would overvoltage the controller
            Powerfab top of pole PV mount (2) | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
            || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
            || VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

            solar: http://tinyurl.com/LMR-Solar
            gen: http://tinyurl.com/LMR-Lister

              Comment

              • redbank
                Junior Member
                • Jun 2020
                • 10
                #19
                Originally posted by Mike90250
                With the specs you mentioned earlier, you can only run all 4 panels in parallel. 2 in series would overvoltage the controller
                maybe you are not understanding my question or the connector I want to use.

                https://www.renogy.com/4-to-1-solar-...mf-ffffm-pair/

                This should put them all 4 in parallel, series if I understand would be to attach one panel to the next panel and so on.

                  Comment

                  • SunEagle
                    Super Moderator
                    • Oct 2012
                    • 15123
                    #20
                    Originally posted by redbank

                    maybe you are not understanding my question or the connector I want to use.

                    https://www.renogy.com/4-to-1-solar-...mf-ffffm-pair/

                    This should put them all 4 in parallel, series if I understand would be to attach one panel to the next panel and so on.
                    Those cables will create 4 panels wired in parallel but you will now need to include individual fusing for each panel. Just using that cable is not safe.
                    Last edited by SunEagle; 08-05-2020, 06:24 PM. Reason: spelling

                      Comment

                      • Mike90250
                        Moderator
                        • May 2009
                        • 16020
                        #21
                        Originally posted by redbank
                        ........

                        Second question, if I find myself running my single 105ah 12v battery low during a weekend with bad weather do I wire it up in series or parallel?
                        Wire the panels in parallel. you can use the branch connector.
                        Wiring panels in series does nothing for you but waste a panel.
                        Powerfab top of pole PV mount (2) | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
                        || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
                        || VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

                        solar: http://tinyurl.com/LMR-Solar
                        gen: http://tinyurl.com/LMR-Lister

                          Comment

                          • redbank
                            Junior Member
                            • Jun 2020
                            • 10
                            #22
                            Originally posted by SunEagle

                            Those cables will create 4 panels wired in parallel but you will now need to include individual fusing for each panel. Just using that cable is not safe.
                            I do have an inline fuse.

                            I want to thank everyone for their help and time. much appreciated.

                              Comment

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