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  • poconoman
    Junior Member
    • Sep 2011
    • 4

    Yep, another noob seeking advice.

    Ok, here's the deal. I have a weekend home and during the week, it's not used, obviously. What I was thinking is to install one panel Mitsubishi PV-MF170EB3 and a grid inverter, no batteries and hopefully the meter will go backwards. I want to do this DIY, I have some basic some elec, handyman skills. One day I'll be there full time, but for now, I'd like to start with one panel. If I have a decent plan, what grid inverter would suit the Mitsu and how would I go with installation.

    ANY advice is well appreciated.

    Thanks
  • Mike90250
    Moderator
    • May 2009
    • 16020

    #2
    If your place has a digital meter, it does not have a "backwards" it just counts what goes through it, in or out, so you will be paying to give them electricity
    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

    • Sunking
      Solar Fanatic
      • Feb 2010
      • 23301

      #3
      Originally posted by Mike90250
      If your place has a digital meter, it does not have a "backwards" it just counts what goes through it, in or out, so you will be paying to give them electricity
      Ditto, cha-ching electric company. Plus if you do not have a contract, when the POCO finds it, they disconnect your service.
      MSEE, PE

      Comment

      • Naptown
        Solar Fanatic
        • Feb 2011
        • 6880

        #4
        You will need to have the system permitted, inspected and certified and sign an interconnection agreement with the POCO.
        That said you can do some or all of the work depending on the AHJ and their rules. You will need to check with them as to how much you can do yourself. I believe in PA a system will have to be professionally installed to qualify for state rebates but again check with the state. I assume you live in PA from your screen name.
        Now for a system the Mitsubishi is a good panel but only having one to start you are pretty much limited to an Enphase inverter. Check the compatibility of the Enphase with your particular module. This can be done at the Enphase website. The downside to a one module install is when you go to add on you will have to buy more of the trunk cable and replace what you buy initially but up to 16 more modules can be added to the infrastructure you will have installed for the one module.
        NABCEP certified Technical Sales Professional

        [URL="http://www.solarpaneltalk.com/showthread.php?5334-Solar-Off-Grid-Battery-Design"]http://www.solarpaneltalk.com/showth...Battery-Design[/URL]

        [URL]http://www.calculator.net/voltage-drop-calculator.html[/URL] (Voltage drop Calculator among others)

        [URL="http://www.gaisma.com"]www.gaisma.com[/URL]

        Comment

        • poconoman
          Junior Member
          • Sep 2011
          • 4

          #5
          Thanks for the replies everyone.

          Does Enphase eliminate the need of a grid inverter?

          Comment

          • Naptown
            Solar Fanatic
            • Feb 2011
            • 6880

            #6
            Originally posted by poconoman
            Thanks for the replies everyone.

            Does Enphase eliminate the need of a grid inverter?
            That is a grid tie inverter but for one panel. if you want to add more you will need to add more inverters.
            NABCEP certified Technical Sales Professional

            [URL="http://www.solarpaneltalk.com/showthread.php?5334-Solar-Off-Grid-Battery-Design"]http://www.solarpaneltalk.com/showth...Battery-Design[/URL]

            [URL]http://www.calculator.net/voltage-drop-calculator.html[/URL] (Voltage drop Calculator among others)

            [URL="http://www.gaisma.com"]www.gaisma.com[/URL]

            Comment

            • poconoman
              Junior Member
              • Sep 2011
              • 4

              #7
              Originally posted by Naptown
              That is a grid tie inverter but for one panel. if you want to add more you will need to add more inverters.
              Ah, so one Enphase per panel. BTW, how much does each Enphase cost? Is it cost effective compared to a conventional grid inverter?

              Comment

              • Naptown
                Solar Fanatic
                • Feb 2011
                • 6880

                #8
                yes they are more expensive about 30% more per watt depending on the module size ( Smaller wattage module = higher inverter costs.
                However with one module you really don't have much choice. It would take 8-10 modules to get a string inverter to even start.
                NABCEP certified Technical Sales Professional

                [URL="http://www.solarpaneltalk.com/showthread.php?5334-Solar-Off-Grid-Battery-Design"]http://www.solarpaneltalk.com/showth...Battery-Design[/URL]

                [URL]http://www.calculator.net/voltage-drop-calculator.html[/URL] (Voltage drop Calculator among others)

                [URL="http://www.gaisma.com"]www.gaisma.com[/URL]

                Comment

                • s.xavier
                  Solar Fanatic
                  • Aug 2011
                  • 183

                  #9
                  take a look at this thread on micro inverters and central inverters

                  Ask your questions about solar modules, mounts, inverters or any other part of your solar energy system. If you want to share the specs for your system, then you can post them here.


                  in general

                  central:
                  inexpensive
                  one point of failure (inverter side)
                  difficult to maintain solar panels (depends on the user)

                  micro:
                  more expensive
                  more possible failure points
                  easier to maintain solar panels (depends on the user)

                  There are more differences between the two but the above is just an outline. take a look at the above thread and shout if yah have any other questions

                  Comment

                  • Crumb
                    Member
                    • Aug 2011
                    • 68

                    #10
                    Originally posted by Naptown
                    You will need to have the system permitted, inspected and certified and sign an interconnection agreement with the POCO.
                    That said you can do some or all of the work depending on the AHJ and their rules. You will need to check with them as to how much you can do yourself. I believe in PA a system will have to be professionally installed to qualify for state rebates but again check with the state. I assume you live in PA from your screen name.
                    Now for a system the Mitsubishi is a good panel but only having one to start you are pretty much limited to an Enphase inverter. Check the compatibility of the Enphase with your particular module. This can be done at the Enphase website. The downside to a one module install is when you go to add on you will have to buy more of the trunk cable and replace what you buy initially but up to 16 more modules can be added to the infrastructure you will have installed for the one module.
                    You might get lucky:
                    Some areas let the homeowner do all the work on anything they want, so long as professional (or equivalent) planning/draftsmanship is done, submitted, approved- AND they win a permit AND they do the work 100% to code AND the inspectors are exceptionally tough on the inspection. (The words I heard are "intensive proctology" - they don't trust the homeowners.) Freedom, yes - but these places are willing to do 0% handholding and instruction. You either have to know what you are doing in the first place or be very, very good at learning.

                    Good luck hiring a contractor on your own work that has been red-tagged, too. Basically these rules are for retired tradesman who want to remodel their own homes or whatever, and are in a good position to do it themselves. I looked into it once for a different project. I appreciate the freedom, but it is of little value to Joe Homeowner.

                    Comment

                    • Mike90250
                      Moderator
                      • May 2009
                      • 16020

                      #11
                      difficult to /easy to maintain solar panels (depends on the user)
                      how does the inverter type affect the cleaning of the panels. Get a hose with a good nozzle, rinse in the AM, before the dew dries. Just 10 miinutes, as needed.
                      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

                      • s.xavier
                        Solar Fanatic
                        • Aug 2011
                        • 183

                        #12
                        yup... comes down to knowing what yah doing... people expect the world and willing to pay 0.99 cents for it

                        Comment

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