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Old 03-14-2019, 07:11 AM   #1
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Adding solar panels on 14 Meridian 42E

I asked this question in a solar discussion and I really didn't get a solid answer. We recently purchased a 14 Meridian 42E and the original owner added the 100 watt solar panel with extra batteries for the larger residential fridge. I'd love to add some extra panels up there. Would it be possible to add them and then tie into the existing wiring that's on the roof because that would be awesome if it's that simple. Thanks guys :-)
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Old 03-14-2019, 09:15 AM   #2
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There are many more knowledgeable on this subject but having added solar to our mh there are a couple questions that you need to get regarding what has been installed (1) what gauge of wire was used from the panel to the controller and wire size from the controller to the batteries (2) what is the capacity of your contoller?
The answers to these and the number of watts you want to add will determine if you can use the existing wire and contrller
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Old 03-14-2019, 11:01 AM   #3
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neub is right. You would want a minimum of 10 ga wire from the panels to the controller. You could probably add an additional 100 watt panel in parallel without any worry.

If it has MC4 connectors all you would need is two MC4 Combiners and possibly a pair of MC4 extension cables

What is the make and size of your controller? If it is a 20 amp controller you will be fine.
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Old 03-17-2019, 11:39 PM   #4
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Yes it is possible; however, yo need to find the answers to some important questions first. What is the max amperage of your Solar Controller. Without this info you don't know the maximum wattage panels you can have. You also need to know what gauge wiring was used coming down from the roof, too small a wire means you could over current it and fry something.
At this point I would check with a professional RV Solar installer to make sure things were and are done correctly. Spend the extra money to have a safe experience and piece of mind while out there Glamping.
You also want to have a quality Solar controller so that it does not fry your batteries.
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