Connect with us

Connecting different panels in sizes and locations in parallel

Discussion in 'General Electronics Discussion' started by VictorAdebayo, Jan 10, 2021.

Scroll to continue with content
  1. VictorAdebayo

    VictorAdebayo

    7
    0
    Dec 14, 2020
    Dear Forum. Is it ok to connect different sizes of panels but same voltage(12volt and different wattages) facing different directions together in parallel? I have a 150 watts 12 volt panel (mono) mounted in front and 30 watts but 12 volt (not mono) panel at back of the house. Can I connect them together to increase the amperage? The cables are drawn in and can be joined together at the charge controller. I actually have two separate charge controllers. One is 40 amp while the other is 20 amp. I want to see if joining the two panels will bring up the amperage for my 200ah gel Battery's charging. We are in a very sunny location. Sun runs from morning till around 5 pm at this period. I use a 40a Sunmate Solar Controller.Thank you.
     
  2. Bluejets

    Bluejets

    4,993
    1,048
    Oct 5, 2014
    Turn off your caps lock.
     
  3. Frankchie

    Frankchie

    141
    16
    Nov 14, 2017
    I don't have any significant knowledge of solar panels, but since no one has responded I'll try to help.

    I think the safest way to connect dissimilar solar panels in parallel it to add a blocking diode to each one. That way it's impossible for one panel to absorb the current from the other panel. Although I think most panels have such blocking diodes installed internally without being certain I would add external diodes.

    Here's some good info. https://www.mpptsolar.com/en/solar-panels-in-parallel.html
    Here's an example of blocking diodes: https://www.amazon.com/Tnisesm-20SQ...Code=ur2&qid=1610379388&sr=8-13&tag=mppsol-20
     
  4. Bluejets

    Bluejets

    4,993
    1,048
    Oct 5, 2014
    Connecting dissimilar solar panels is never a good idea.
     
  5. VictorAdebayo

    VictorAdebayo

    7
    0
    Dec 14, 2020
    I don't have any significant knowledge of solar panels, but since no one has responded I'll try to help.

    I think the safest way to connect dissimilar solar panels in parallel it to add a blocking diode to each one.

    Thank you for caring. I appreciate the links you attached also.
     
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day

-