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Peyper

Mecer 2400va Trolley - Can I add solar regulator?

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Hi Guys,

 

I just bought a 2400va Mecer Trolley inverter. 

Can I use a solar panel and my WRND 20A solar regulator direct to the batteries ?

Mecer do have a solar charger available @ R1 000 , then the solar panel plug direct into the Mecer box / trolley.

I want to bypass the inverter en connect my WRND straight onto the batteries.

 

Will this be safe to do?

 

Regards,

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image.png.2bec86d91f2a2698f69b71c54bf58f98.png

 

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On 2020/05/20 at 4:33 PM, plonkster said:

I can't see why not. Just fuse it. When unsure, fuse it 🙂 Use a DC-rated fuse. At 24V an automotive fuse is acceptable.

What size fuse I would start if with one or two x 80W panels 

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57 minutes ago, Peyper said:

What size fuse I would start if with one or two x 80W panels 

Sounds like I've been hitting the pineapple beer.... Lol 

 

What size fuse would I need if I use 1 or 2 x 80w panels? 

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4 hours ago, Peyper said:

What size fuse I would start if with one or two x 80W panels 

Well, you said its a PWM controller, so the power of the panels don't matter, the peak current capability does. If it's an 80W panel then I assume it's a 36-cell module that makes its peak power around 18V, so its going to make 80/18 ~= 4.5A. With the two panels in series (cause its a 24V setup) the current will remain the same. So a 10A fuse will do just fine. The fuse is there to protect the cable, in case something goes wrong with the charge controller and it starts shunting large currents through those cables.

Of course, you're only going to get around 24 * 4.5 ~= 110W of power out of your two 80W panels. Welcome to the world of PWM controllers, where the charge controllers are cheap and the watts don't matter .... 🙂

 

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