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Post by emmasdad on Nov 19, 2018 14:23:06 GMT
I currently have 3 100 watt panels connected to a pair of golf cart batteries on my camper. My camper is located in some pine trees and if I mount the panels about 125 to 150 ft south I would have a nice line with the sun from about 10 AM till sunset. Was thinking about running the wire underground, what gauge?
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Post by tattoo on Nov 19, 2018 15:07:59 GMT
That sure is a long ways away... How far away is the CC from the panels? And how close is the CC to the batteries?
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Post by bupkis on Nov 19, 2018 16:10:50 GMT
please provide controller and how panels are connected. I'll assume series so that CC input voltage would be ~50v and max current input ~ 5 amps. 150' of 10g @ 5A yields a voltage drop of ~1.5v. Series, 8g, ~1v or 1v/50v = 2% Series, 6g, ~.6v or .6/50 = 1.2% www.genuinedealz.com/voltage-drop-calculatorIn parallel that would be 10g, 15A, voltage drop of 4.6v!!! parallel, 8g, 15A, ~3v, too much! |
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Post by emmasdad on Nov 19, 2018 17:31:53 GMT
My panels are in parallel. I currently have three 100w renogy mono panels. I have the 30 amp Renogy controller that came with the first panel, but I'm currently using an AllPower 20 amp controller. I like the readout and being able to see whats happening at a glance. The controller is about 8' from the batteries.
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Post by bupkis on Nov 19, 2018 19:24:10 GMT
3 x 12v panel in parallel, 150' 4g is not too big but will not fit the controller, @$1/ft and ya need 300'!!!!
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Post by playersz28 on Nov 19, 2018 20:57:42 GMT
What are you using the solar power for? Meaning what do the batteries power? Lights, AC powered items?
With that distance and depending on your load you might want to convert to AC for the run to the trailer and put the CC, batteries & inverter out with the panels. Far as I know running 120v AC requires a smaller cable run over distance vs DC (that's why the main grid isn't DC). With only 300w you're not running that much anyway that would make a large AC draw.
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Post by emmasdad on Nov 28, 2018 20:17:22 GMT
I am currently just keeping the batteries charged. the fridge runs on LP. I guess there are monitors running, the batteries will only last a few days without the panels. My camper is off the beaten path. The electric coop wants about 30k to run power to it. We use it a lot of weekends with a generator. I would like to run a dehumidifier to keep the moisture out. I'm thinking an inverter and maybe a wind generator. I would run the fridge on 110 to save LP if I can generate enough power.
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Post by tattoo on Nov 28, 2018 21:22:48 GMT
I am currently just keeping the batteries charged. the fridge runs on LP. I guess there are monitors running, the batteries will only last a few days without the panels. My camper is off the beaten path. The electric coop wants about 30k to run power to it. We use it a lot of weekends with a generator. I would like to run a dehumidifier to keep the moisture out. I'm thinking an inverter and maybe a wind generator. I would run the fridge on 110 to save LP if I can generate enough power. You should be able to run a fridge and a dehumidifier off of an inverter with no problems.... But you will need to know how many watts they use in a 24 hour period.... That way you will know how many panels and batteries you actually need...
30K in crazy money for power.... You can make all the power you need with solar for a whole lot less than that...
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Post by Juve on Sept 3, 2019 17:59:49 GMT
What is the max cable size that can be used on the Renogy CC?
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