SOLAR PANEL JOINING

Submitted: Thursday, Jun 14, 2012 at 13:24
ThreadID: 96261 Views:2112 Replies:3 FollowUps:4
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Hi
Question please

Is it possible to run together two different size panels, one 120w on a caravan and a portable 60w via an Anderson plug to the same battery.
Cheers and thanks
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Reply By: Member Andys Adventures - Thursday, Jun 14, 2012 at 14:24

Thursday, Jun 14, 2012 at 14:24
As long as you have at least a 15 Amp pv controller and the same type of panel's it will be fine
Andy
AnswerID: 488449

Follow Up By: Nomadic Navara - Saturday, Jun 16, 2012 at 21:38

Saturday, Jun 16, 2012 at 21:38
As long as they all have roughly the same open circuit voltage they will work together together on a series pass regulator. If you run a few unmatched panels into a MPPT controller you are going to give it a difficult time.


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Reply By: Member - peter & dawn m (QLD) - Thursday, Jun 14, 2012 at 17:14

Thursday, Jun 14, 2012 at 17:14
i asked that same question a while back & was told that it would only charge the same as the smallest panel i,e 2 x 60 watts might pay to ring a sola place. swampy
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Follow Up By: oldtrack123 - Tuesday, Jun 19, 2012 at 11:02

Tuesday, Jun 19, 2012 at 11:02
Hi Peter
Totally incorrect,
As stated elsewhere provided the output voltage is close on each you can PARALLEL connect a 10W & 100Watt panel & get the combined wattage of 110W[both will work effectively together]
BUT different wattage panels should NEVER be connected in series for higher voltages
In such an arrangement, the current capacity of the smallest panel is the limit

Peter
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Reply By: P2D2 - Friday, Jun 15, 2012 at 08:13

Friday, Jun 15, 2012 at 08:13
There is no issue connecting different size or different brand solar panels together. The combined total of the wattage of your solar panels is what the output will be.
AnswerID: 488522

Follow Up By: LIFE MEMBER-snailbait - Saturday, Jun 16, 2012 at 21:16

Saturday, Jun 16, 2012 at 21:16
i agree with that what he said
Terry
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Follow Up By: oldtrack123 - Tuesday, Jun 19, 2012 at 10:48

Tuesday, Jun 19, 2012 at 10:48
Hi
Joining different wattage panels of near the same voltage rating @ MPPP in parallel [pos to ps &neg to neg] should not give any problems,using a single common reg of sufficient capacity
This ,I believe, is what the OP wishes to do

I would not direct parallel panels with vastly different out put voltages,
but such could be used IF they each have their OWN reg

IF each panel is fitted [as supplied] with it's own reg simply connect each to the battery
Each panel & reg will then do the best it can

Peter
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