diy solar

diy solar

Is this array connection possible

cmb

New Member
Joined
Apr 10, 2020
Messages
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I will start off with I KNOW NOTHING. Only what I have learned off of youtube.
I want to connect my roof solar panels to a portable panel into the same solar charge controller.

2 100W solar panels on roof using MC4 branch connnector then go through the roof
That line coming from roof would be connected to a second MC4 branch connector then connected to Solar charger

I will use the second MC4 branch to connect to my portable panel to my roof panels

1 190W solar panel using MC4 to SAE adapter
plug that into the SAE wall port
then use SAE to MC4 and that would go into that 2nd MC4 branch

Will my roof panels still charge my battery even when the portable one is not connected?
Will I be losing amps by using all these connection?

2 100W is Rich solar
1 190W is Rich Solar
1 Epever MPPT Charge Controller 40A
2 MC4 Branch connectors
2 MC4 to SAE adapter
1 SAE wall port

I have attempted to draw it and if it works will be attached to this post. I have also inculded the specs of what I would be using.

100W
Specifications
  • Maximum Power: 100W
  • Maximum System Voltage: 1000V DC (UL)
  • Optimum Operating Voltage (Vmp): 17.8V
  • Open-Circuit Voltage (Voc): 21.2V
  • Optimum Operating Current (Imp): 5.62A
  • Short-Circuit Current (Isc): 6.02A
  • Weight: 16.5 lbs
  • Dimensions: 39.6 x 26.6x 1.4 inches

190W
Specifications
  • Maximum Power(Pmax): 190W
  • Maximum Power Voltage(Vmp): 20.4V
  • Maximum Power Current(Imp): 9.31A
  • Open Circuit Voltage(Voc): 24.3V
  • Short Circuit Current(Isc): 9.86A
  • Maximum System Voltage(Vmax): 1000V DC
  • Weight: 26.5 lbs
  • Dimensions: 58.7 x 26.8 x 1.4 in


THANKS for any help advise.
 

Attachments

  • Solar Charge controller.jpg
    Solar Charge controller.jpg
    186.8 KB · Views: 3
  • Solar drawing.jpg
    Solar drawing.jpg
    74.1 KB · Views: 3
As long as you do not exceed the maximum amperage on everything in that line it will work.
#10 copper stranded wire thhn/mtw/ solid conductor house wire. max 30A
Mc4 and mc4 branch connectors max current needs to be checked.
Max input current of the control.
Max current of the pv modules.
Inline fuses or breakers could be used if needed to protect these.
 
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