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Thank you, Pete. I think I decided upon multiple 24 volt all DC "units/circuits". I am only putting a 320 max watt load on each unit/circuit...13.33 a= 320w/24v...2 -230 watt solar panels wired in series and 2 250 Ah batteries in series per "unit/circuit". I need to keep it simple because...

Let's say I have 4 solar panels. I run two in parallel to produce 20 Vmp and 10 amps, and I run that to a positive and a negative buss bar. Then I take the other two and run in parallel to produce 20 Vmp and 10 amps and run that to the same buss bars. Do I now have 40 Vmp and 20 amps at the buss...

Okay. Great. Thank you. I just bought cheap 24v inverter. I imagine it is probably that. I was just wondering if I misunderstood the math/ohms law.

Hi. I took two 12 volt batteries, wired them in series. Produced 26 volts. Hooked it up to a 24 v inverter. Then I put an AC device on inverter that draws 200 watts. When I took an amp reading. meter says I draw 16+ amps. 200 watts at 12 volts should be 16.6 amps...I would think 200 watts at 24...

Thank you MisterSandals...I am talking about battery to loads. I guess to be sure, I need to get some wire, run it out 100' or so, hook up a 24 V light at the end, and put 400 watt load right after the battery connection, and see what I get. Then test it again as I shorten the run. I know I will...

Next question...concerns voltage drop on my DC circuits. If I run a 24 volt system, and had 400 watts per circuit, how long can the run of the circuit be if I use 12 awg?

One of my thoughts, and unfortunately there are many, was to have 2 solar panels and all the equipment needed per circuit, so each circuit would be a "unit" as you described. Then I would have 10 separate mini power systems for the building. Bad idea? One of the reasons is I could put the panels...

Thank you...Haiti is a place no one wants to send their ship to right now. I think I am stuck buying panels and batteries in Haiti, but the other stuff I think I can carry on as extra luggage

Thank you!!

Thank you, Gents. I love all you are teaching me. Looking for one of you to show me where I am wrong. The 24 V LED I have tested use 18 watts. The DC fans use 36 watts. So I designed the system so that I allowed 20 watts per light, and 40 watts per fan, plan on piping them all together in a...

Thank you all. I have bought a couple 100 w solar panels, 24 volt charge controller, small 12 v 14 Ah batteries so I can wire them in series/parallel, 24 volt fan, 24 volt LED, buck transformer and other stuff I need so I can do some testing and try to teach myself. I'm in education mode right...

Thank you one and all for your help. I appreciate your time and help more than you know. Some background ... I am recently retired. There is an organization called Schools for Haiti that has about 12 schools and about 2500 kids...The person who started the ministry when he retired did everything...

I am new to solar. If I had 2-300 watt/12 volt solar panels, and I wired them in series...Would I would obtain 600 watts/ 24 volts? ...would the resulting amperage be 25 amps? a=600w/24V...and if I then wanted to run a Straight DC system, no inverter, would I be able to expect the 2 panels...