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Old 03-23-2016, 07:15 AM   #15
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Has anyone noticed the date of the original discussion??
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Old 03-23-2016, 07:57 AM   #16
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Has anyone noticed the date of the original discussion??
I was wondering why someone dug up this ancient post.
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Old 03-23-2016, 08:55 AM   #17
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The snowball only gets bigger as you roll it in the fresh wet snow ! What a mess wiring and snowball! Thank Lewster or pointing out the date
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Old 03-23-2016, 10:29 AM   #18
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New post was made by a new member starting out by insulting other members and apparently not reading the entire thread. Go figure.
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Old 03-23-2016, 11:37 AM   #19
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New post was made by a new member starting out by insulting other members and apparently not reading the entire thread. Go figure.
He should fit right in then.

Also he used a cable from his "car's amp" which means he's a knowledgeable expert.

See, just keeping the snowball going here.
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Old 03-23-2016, 11:47 AM   #20
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Not my place to comment on the OP's wiring job....... I leave that to you guys!! :-))


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Old 03-23-2016, 02:29 PM   #21
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Next time I'll read the ENTIRE thread before contributing to the insanity!
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Old 03-23-2016, 06:16 PM   #22
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The Blue Sky 3024iL is sufficient for the five 100 watt panels on the 23D. We sized the solar charge controller and associated wires to the output of the solar panels.

It's been quite some time since I sized the solar for my off the grid cabin, but I recall that code required that the controller had to be 125% of the panel rating to account for the potentially higher output during cold temps, snow reflectance, etc. Assuming your panels put out 5.5 -6.5 amps each at STC, have you cut it too close with a 30 amp controller?
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Old 03-23-2016, 06:43 PM   #23
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It's been quite some time since I sized the solar for my off the grid cabin, but I recall that code required that the controller had to be 125% of the panel rating to account for the potentially higher output during cold temps, snow reflectance, etc. Assuming your panels put out 5.5 -6.5 amps each at STC, have you cut it too close with a 30 amp controller?
The Blue Sky 3024iL is 40 amps @12VDC, which is how his panels are connected. 30 amps at 24VDC.
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Old 03-23-2016, 10:11 PM   #24
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Don't most modern controllers have the ability to clamp excess amperage?
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Old 03-23-2016, 10:35 PM   #25
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Don't most modern controllers have the ability to clamp excess amperage?
They do have the ability to run over capacity (up to their stated limits) and then 'clip' the output to the designed maximum. Could possibly be a waste of watts left on the roof if the array is too large, but that was a discussion in another thread.
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Old 03-23-2016, 10:45 PM   #26
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The Blue Sky 3024iL is 40 amps @12VDC, which is how his panels are connected. 30 amps at 24VDC.
You know way more about this then I do. So I'm confused that I found this statement in Blue Sky's manual for that controller:

"Do not connect to a PV array capable of producing greater than 32A short circuit current for 12V nominal PV modules, or 24A short circuit for PV modules greater than 12V nominal. Limit input short circuit current to 12A if the 24V input 12V output mode is used".

It's on page 2:

http://www.blueskyenergyinc.com/uplo...E_SB3024iL.pdf
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Old 03-24-2016, 09:09 AM   #27
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He should fit right in then.

Also he used a cable from his "car's amp" which means he's a knowledgeable expert.

See, just keeping the snowball going here.
I didn't attempt to insult anyone. As far as I know since I have almost the same controller is that the load is shown connected to the controller in the instructions. It should be the same for any controller. If you connect all of your loads directly to the battery what is to prevent you from going below 12 volts or whatever the voltage is when you're battery is damaged. Also fyi I attached a solar panel to the car roof. The sub wire as you said is 1/0 or 2/0, more than enough for 100 watts. This power wire comes directly from the battery fused with a 130 or 150 amp fuse. I also didn't claim to be an expert on anything, I read it from the manual u butthead
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Old 03-24-2016, 10:57 AM   #28
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