Voltage vs Wiring Size Explained and Spreadsheet for Battery and Solar Panel Calculations
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Spreadsheet for your system calculations here: https://www.dropbox.com/s/ayh7aex78k6ldbb/Steve%27s%20Formulas%202.02.xlsx?dl=0 Here is the link to calculate wire size for your power items:| http://www.southwire.com/support/voltage-drop-calculator.htm
Comments
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Thanks for posting this is information that is not shared by any body else.
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Great 411 ! I am running a 4-
6v deep cycle 220 a/h batteries ran in series to achieve a 24 volt system. 1. 3x 305 watt 24 volt Array VOP 36 volts @ 8.7 amps each (should I run these in Parallel or Series? Using MC4 and a 50' cable @ 10 ga. to the 80amp 24v MPPT Charge Controller2. I am using 2 Ga. Terminal wire on the 4 -6v batteries in SeriesQ: I have x260" 2ga Cables from + off Bat #1 and - off Bat #4 to Power Inverter Lugs. Charge Controller from battery bank.The Charge Controller input ports are to small to accept 2 gauge size wireCan I use 10 GA with terminal rings from the battery bank and would I direct wire connect them to the CC Battery inputs in the same way I have using my Battery Tender off of the opposite ends of bank +/-- 1& 4.Q. Can I run my 24v tender off of the dump load? instead of ac 110? Would the MPPT recognize that the tender is 24v?Thanks for any sound advise :) ~~~~~!!!!!!!!! -
thanks for sharing
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Steve, I just found the spreadsheet reference. It took me a while to understand how to get it to work... but it's up and working.Thank you.
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Steve, I couldn't find that spreadsheet for downloading, where on this sheet can I find it?
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You can build it yourself too. I made it 2 weeks ago thanks to inplix website.
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Your videos have been very helpful and informative about solar power. Funny thing about your presentations, I've gone to vendors promoting solar power - living off the grid and so forth, and you seem to be "thee" guy for this stuff. Everyone of your posting have been right-on, and accurate for those wanting to know more. Thank you.
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This is so interesting. @ 13:27 you say you generate and consume 25 Kwh's per day. We also consume about 25 Kwh's a day. Using my "Owl" (device that connects to the 240 volt mains and records energy consumption), I use roughly 15 of those 25 Kwh's from say 5 pm (when the sun is gone) till 9 am (when the sun officially comes up), and the remaining 10 Kwh's during sunlight hours of 9 am- 5 pm. You must only be using 2.5 Kwh's from say 5 pm till 9 am ?... and 22.5 Kwh's from 9 am till 5 pm ? ... do I have it right ?
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Thank you to you & your friend that made the spreadsheet for all the great information. I finally grasp why the " enlightened ones " move away from 12 volts. Time for me to rethink my voltage plan. You videos are much appreciated.
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Seems like the deeper I dig into your archives the more uninformed I realize I am. Lol Thanks for the info.
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steve,being an hvac tech i really appreciate your technical data as i truly like to know how things work and totally agree with using smaller gauge wire, thanks for passing along the chart my friend
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Hi there Steve we have a 12 volt system our self's. Wish I never did the 12 volt system. Do you know how many battery's you can put in parallel we have golf cart 12 volt battery's 9 of them in total. I wanted to add some more but don't know if i can or not now. To keep the charge up on my system. We have a mid nite classic charge controller 150
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Voltage vs Wiring Size Explained and Spreadsheet …: https://youtu.be/ytwLNKbarsg
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Wow ! Thanks Steve. Simple enough so I could understand as I enter into the Off Grid realm. Really appreciate the practicality notes about the stake in the ground for practical solar hours and the spreadsheet. Good to hear from you. PS. Any honey yet ? As always may your days be sunny.
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Excellent video/explanation. Best thing I did for my system was to go to higher voltages (PV array and battery). Everything runs cooler, too (esp the solar charge controllers). I wonder how these calculations work on a hybrid system like mine? I only use the batteries for powering the inverter...not so much for storage. When the batteries reach a certain voltage, the Outback Power inverter starts inverting. When the voltage drops...it switches back to grid. I really don't want a large battery bank and use the PV energy to charge for hours on end...just "right sized" to get the voltage up relatively quick and start inverting. THanks.
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Excellent info, Thanks!
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Thank you very much for putting this info up,this is the kind of info people need when starting out to get a true picture of off grid living.
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very nicely done thank you
Roy
18m 18sLenght
75Rating