diy solar

diy solar

Recent content by Rocketman

  1. R

    Question: serializing parallel panels

    Double check that your AIO can handle the amps from the array. Some AIO’s can’t handle a lot of amps (some can so check your specs).
  2. R

    Looking for the best big inverter for my van install

    AC charging is good for a backup. Wire it for 120v 15amp service and carry an extension cord. That way if you need it - you can look for a usable 120v outlet. I have been using my Multiplus for 3 years now 24/7. It’s a great inverter.
  3. R

    Running 240V water heater on 120V?

    Here is maybe a better idea: Leave your current water heater alone - that way your wife always has hot showers. Add a second water heater in front on your water heater and this one runs off the solar dump load. It will always be cold water - and will heat the water up before going into your...
  4. R

    400W 12V Solar Panel 20"X 26"

    I just wanted to share a FRAUD Solar panel my friend was looking at getting on Amazon: https://a.co/d/gA83egV That would be a nice 300w panel - if it were true. It looks good and the math is right Vmp & Imp. But what caught my eye was it was approximately the same size as my 200w panels. I...
  5. R

    N00b who knows just enough to be dangerous

    Welcome - watch out this hobby is addicting…😎
  6. R

    Designing a Solar system for mini Houseboat

    That plan looks good - hopefully the Renogy inverter/charger works well for you… I don’t know anything about that AIO Inverter. From reading on this site Renogy brand seems to be either hit or miss. Some products are great others not-so-much. On a boat I believe Triplex is recommended over...
  7. R

    MASSIVE Overpaneling -MPPT input current

    I have a 600w array on a Victron mppt 100/30, (clips above 440w), it does work in that range, but it also tends to cause some issues with driving the charging voltage a bit high when clipping a lot - which causes that mppt to hit Absorbing and float - well before the other mppt does. Because of...
  8. R

    Portable 2 Wire AutoStart Generator Options

    When I was considering starting my Onan Generator with my Victron CCGX, I discovered a module that I almost purchased (I later decided to just start the generator manually - with the switch). Atkinson electronics GSCM It was really interesting. It seems to do all the things that would be...
  9. R

    Switching between solar panel arrays

    I would get a Victron mppt 250/60 (or 250/70), and wire one of the arrays to it to just charge the batteries. That way both arrays are working at max performance. If west array 4s2p into it. If East array 3s2p. Use the array that most closely matches your 120v usage go into the inverter...
  10. R

    Switching between solar panel arrays

    Does your inverter have two separate mppt channels? Do you have a battery? - if so the easiest thing may be to put one array just charging the battery with a separate mppt solar charge controller. To figure out the penalty for combining the arrays we need to know for each array the panels: Voc...
  11. R

    RV solar panel wiring question

    You still can do a ground array - get 4 panels hook them up in series, then connect to your ground mount mppt. That’s if you decide you need more solar.
  12. R

    RV solar panel wiring question

    If you carefully select the ground mount panels so they work well with your roof mount array - yes you can. They will just be another parallel string. You will want the Vmp string voltage on the ground to be as close as possible to the Vmp string voltage of the roof array. If you end up with...
  13. R

    How Long Can Your System "Coast"?

    I think everyone has the wrong idea about winter- if you are not getting enough sun in the winter to keep the battery full - go south - that’s what those big black tires on your MotorHome are for. Winter in Arizona or Baja provides plenty of sun… Oops - I think I missed the point😎. In my...
  14. R

    Battery shutting of at 40%

    You are looking for differences - are they all around 3.000v or are the all but one at 3.125v and one is at 2.850v. Also on charging are they all close to the same 3.500v or all they all at 3.312v but one that is at 3.650v. You are looking for the high and low and where most cells are at each...
  15. R

    fifth wheel roof mounted panel, what is best brackets,

    It has Dicor on it - I think this photo was taken towards the end of the project- before that step.
Back
Top