Changes to the 24 volt solar power system

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1. Looking to build an off grid retirement home in the country. Wanting to save anywhere I can I researched the Square d Breakers. They are rated for DC but at 48 volts from 10-70 amps on single pole and 10-60 amps on 3 pole. They do not show a rating for 12 or 24 volt. That may not be of any concern in your application but thought you might not be aware of it. Here is a link to what I found http://static.schneider-electric.us/docs/Circuit%20Protection/Miniature%20Circuit%20Breakers/QO-QOB%20Circuit%20Breakers/0730CT9801R108.pdf
2. 30amps at 120v converters to 300amps at 12v .  you are so right about mixing fuses with ac and dc. you are also right about the heat. when wires and components get to bad things happen.... nice video.
3. Good stuff... thanks !
4. Awesome...saving money is always good. Thin DC wiring can cause heat too. This is what happens to my system...my cables to/from the chargers to the breaker box and then down to the batteries weren't thick enough. Now (after installing 4 AWG)...under full power, the cables and breakers barely get warm (like, just above room temperatures). Square D QO breakers meet all the codes too. I have a link to share with you. These are Oregon based (made in the USA) solar panels by Everbright. About $1/watt mono panels (165 w solar panels). Not much info on them (feedback ratings or Youtube videos)...so, I think they are new. Anyway, they are selling them on Amazon: http://www.amazon.com/Solar-Panel-Battery-Charging-Efficiency/dp/B00G2IZ1VW/ref=sr_1_6?ie=UTF8&qid=1462188560&sr=8-6&keywords=solar%20panels%20for%20sale
5. Nice upgrade to the system bud, you said something along the lines of upgrading your batteries in the future.. just little advice, when i started getting into solar on a diy level i wanted to build a battery bank for times in the winter when our power is cut on us and to save on the electric bill using grid tied inverters, well when i looked into pricing on common batteries used for solar i was sticker shocked, so i got to thinking a few years back i went around to a few places and asked permission to get the old recycled laptop batteries from various places, i managed to collect enough 18650 cells that tested good to make a nearly free 20ah 48v battery for my ebike build i did.. that battery is still going to this day with nearly 8k in miles on the bike using pedal assisted ebike kit... so i went around and collected more laptop batteries and found the thrift stores tend to have loads of them due to them not allowed to resell laptops due to privacy of the data on the laptops, so they take the batteries out of them and have recycle centers come and get the hard drives and batteries to dispose of them.. i went around 1 day to all the major thrift stores in my town and came home with over 300 laptop batteries with 6+ 18650 cells in each in one day of running around.. i bought a few more testers to test the capacity of the cells so i could do 20 cells at once, since then i have tested out just over 1600+ cells with 1700mah+ and installed them into my system doing a modular style powerwall similar to the tesla powerwall in a way.. i picked up some pvc 1x4 mold blank boards from lowes and glued them together to create blocks taller than the cell heights using plain pvc plumber cement, then using blocks of wood i cut out for the spacing i setup on the drill press so i could drill out holes for the cells through the pvc board with a forstner bit, then on the back the negative side of the cells i took 1 inch wide copper flat bars and screwed them to the back side so the flat negative end of the cells all hits the negative bars when the cells are in the hole.. then on the positive side i used more 1 inch copper flat bars that i drilled and tapped them so i can screw a small 1/4 copper machine bolt into, the cell goes in the holes, the negative side of the cell hits the negative bar on the one side, then the positive side makes contact with the cells from the copper bolt being lightly screwed to apply slight pressure to the positive terminal on the cell.. then for extra measures i bought some giant shrink wrap large enough to go over the cell block as a whole and covered it so the bar ends of the copper bars sticks out the one side, then i just wired up the blocks i built
6. Nice brother. Your right heat is power. Why waste it? FYI if you do go 48 volt you must brake both side of the line. Thanks for showing us. God Bless.
7. the rating is to 48 volt. do not use on 48 volt unless you break both negative and positive wires. you will need a two pole breaker then