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Author Topic: New solar panel system  (Read 1546 times)
K0UA
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Posts: 4799




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« Reply #15 on: July 29, 2019, 08:24:41 PM »

Quote
Sorry for the crappy "graphics".

Actually I was pretty impressed that you took the time to do that..!
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73  James K0UA
ARRL Missouri Technical Specialist
N8AUC
Member

Posts: 643




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« Reply #16 on: July 30, 2019, 08:38:24 AM »

Quote
Sorry for the crappy "graphics".

Actually I was pretty impressed that you took the time to do that..!
I actually did it pretty fast using notepad.
It looked good there, but notepad is simple and uses a monospace font.
When I pasted it into eham, it converted it to proportional spacing which messed it up.

Of course it would have been much easier if  eham made it easy to insert a document.

I gave a presentation on solar power at the annual Ohio ARES  conference earlier this year.
All the drawings were in my power point slide deck. But this site won't handle that.
Oh well, sometimes you have to live with the tools available.

73 de N8AUC
Eric

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KD8SKM
Member

Posts: 20




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« Reply #17 on: July 30, 2019, 12:11:10 PM »

Rick:

Sorry to be the bearer of bad news however the Buddipole Power Mini charge controller is only good for 10 amps and 3x 100 watt panels in parallel with an MPPT controller such as ours can deliver about 18 amps in full sun.  Don't know if that unit will limit current if too much solar is connected....

just food for thought.  Our Sol Buck-Boost model would be a perfect fit for 3x 100 watt in parallel.

Rob
KD8SKM
DIY Solar for U
https://www.diysolarforu.com
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KF7YED
Member

Posts: 221




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« Reply #18 on: August 02, 2019, 05:17:02 PM »

Oh. Ok. Just saw this. Maybe I'll just use one panel at a time depending on the use: radios or camper battery. Until I pick a controller. The DIY Solar is a little steep for me.
Thanks.

Rick
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KF7YED
Member

Posts: 221




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« Reply #19 on: August 11, 2019, 03:27:06 PM »

So, the new camper battery arrived with a crushed terminal so I can't use it. Of course it's a weekend and I'm hoping the distributor will answer me on Monday. They asked for pics on Friday so at least we're in contact.

ANYWAY...  while I'm working that  out, I thought I'd ask about connecting the panels and the controller to the new battery. Is it just that simple, as in panel + to battery + and then connect the camper + to the battery + like it was before? Seems to me there should be something between the solar panel and the camper wiring....
I have the Genasun GV-10 and I want to connect one 100-watt panel to it to charge the camper battery which is 100AH deep cycle (when I get the replacement...) The Genasun has two screws to connect the panel and two screws to connect the battery. Seems that means the cable from the camper will be connected to both the battery and the panel at once... ?

Thanks.
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N8AUC
Member

Posts: 643




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« Reply #20 on: August 12, 2019, 02:14:25 PM »

So, the new camper battery arrived with a crushed terminal so I can't use it. Of course it's a weekend and I'm hoping the distributor will answer me on Monday. They asked for pics on Friday so at least we're in contact.

ANYWAY...  while I'm working that  out, I thought I'd ask about connecting the panels and the controller to the new battery. Is it just that simple, as in panel + to battery + and then connect the camper + to the battery + like it was before? Seems to me there should be something between the solar panel and the camper wiring....
I have the Genasun GV-10 and I want to connect one 100-watt panel to it to charge the camper battery which is 100AH deep cycle (when I get the replacement...) The Genasun has two screws to connect the panel and two screws to connect the battery. Seems that means the cable from the camper will be connected to both the battery and the panel at once... ?

Thanks.


Rick,
No - it's not that simple.
Go back through this thread and re-read it.
Solar panels go to the charge controller port labeled for panels.
The battery goes to the port on the charge controller labeled battery.
Sounds like with your Genasun controller, you connect the load to the battery.

Solar panels HAVE to go to the charge controller in your case. So does the battery. Otherwise, you will have a huge problem to clean up.
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KF7YED
Member

Posts: 221




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« Reply #21 on: August 12, 2019, 05:31:54 PM »

Yes, that's what I'm saying. The panel is connected to the charge controller terminals marked "Panel" and the battery is connected to the terminals marked "Batt." That leaves the wires from the camper (LOAD) to connect to the battery. But to me that means they're also connected to the charge controller output marked "Batt" so I was thinking there should be something in between. 
A guy on another forum thread suggested a fuse block like this one https://www.bluesea.com/products/2151/Dual_MRBF_Terminal_Fuse_Block_-_30_to_300A  to connect both the load (camper) and the charge controller to the battery each through a separate fuse..  I guess I’m just trying to be sure how to make all three pieces connect without blowing something out.
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N8AUC
Member

Posts: 643




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« Reply #22 on: August 12, 2019, 10:17:29 PM »

Yes.
Putting a 20A fuse in the + lead between the battery and the charge controller is recommended by the manufacturer of the charge controller.
For safety reasons, you should also put a fuse between the + lead of the battery and your load. 20A is probably a good value to use for that too.
That 100Ah battery stores a lot of energy. A fuse is a good safety precaution.
There is enough energy stored in that battery to start a fire if something goes really wrong.
Fuse #1 goes from the battery + terminal of the charge controller to the + terminal of the battery.
Fuse #2 goes from the + terminal of the battery to your load.
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KF7YED
Member

Posts: 221




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« Reply #23 on: August 13, 2019, 09:05:25 AM »

Got it. I ordered that BlueSea fuse block and two fuses last night on Amazon. I was in touch with the Genasun tech support and they said it is fused internally so no fuse was needed between it and the battery. But I had already ordered the dual fuse block by then so, what the heck, can't have too many safeties...
Now I just have to send the damaged battery back and wait for a replacement.....

Thanks for all the input.
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