diy solar

diy solar

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  1. 2

    Please check my 7 KW off-grid diagram

    i think too much is made of the unheated.... put your batterys and gear in basically a "beer cooler" problem solved... unless your charge controller or inverter work by magic, they generage heat in a small enclosed container.
  2. 2

    Using excess solar to heat house

    i use thermosyphon solar. its passive solar but works great on my metal building. my system doesnt have excess in winter, but does in summer as well. I dont care, ihave huge propane tank and generators if solar is not cutting it. Cut the cord to the grid years ago.
  3. 2

    Done with 12v... Help me plan 48v...

    ya it can be done, adn whatever you start with you can add to it, if you plan for that ahead of time it helps. You dont really say what your trying to accomplish or power with the system, you wont have enough money for tons of batterys which will limit what you can do with it.
  4. 2

    House battery connection to engine

    so do you have 2 battery banks, one house and one for the engine? if 2 battery banks you should have some kind of isolation between them? but if your question is can a battery be hooked up to several chargers, yes
  5. 2

    Is it morally wrong to marry your SCC? Victron MPPT RS 450/200

    probably not certified yet but most likely will be, all the rest of their usa sold gear is ul certified. what places are you lookin at? Its on thier website under downloads . Last certification was December 2020 on their site. i bet covid has a backlog?
  6. 2

    Inverter size for log splitter

    is your iverter a hi frequency inverter if so thats the problem, get a second inverter to run the log splitter thats a low frequency inverter (will be very heavy compared to a hi frequency inverter) i would suggest something that surges to at least 10000watts
  7. 2

    Going to start a RV solar project next summer.

    basically put as many panels as you can up top, and get gear you understand how to work. Also , consider where you are parking it, i have 600 watts up top which works great in my driveway but end up using my 3 portable 100 panels wayu more often if camping in woods to be able to collect...
  8. 2

    Do North American electricians test impedance?

    very open ended question... I build and rebuild solid state and tube amplifiers. For this yes impedence testing is part of the process.
  9. 2

    BIG portable generator

    why not just run it offgrid? you could fit 14 panels on a 30 foot trailer right?
  10. 2

    Battery bank discharging faster than anticipated

    Yes your thinking right on the mppt... its really worth it, 50a or higher is a good starting point. another cheap option is to keep what you have and add more than one charge controller. you could just run one charge controller per panel (of if you have 2 of the same panels put them in...
  11. 2

    New Victron Multiplus-II 12/3000/120-50 designed specifically for RVs with 30A/50A input flexibility available MARCH 2021

    it does, the nomenclature of 50A is confusing , to a non rv electrician it should be called 100A, as in 2 50a legs. yet the 30A is just one 30amp not 2.... big differnce in what a 30a rv and a 50a rv come equiped with from the factory
  12. 2

    Sizing a whole house generator for a 3 Ton Air Conditioner

    10-4 , i forget not everyone is a farmer lol. the red diesel (off highway) helps , and i didnt figure in the 10-20% probably goes in the lawn mower and bobcat and small tractor. the caterpillars start off at around 20K which is probably the right size for a typical 3-4 bedroom suburban...
  13. 2

    Rv project for a new guy..

    Then your good , thats the downside is having useless panels up there when they degrade, which ive seen on many boats in 1 or 2 seasons. probably try to park in the shade will extend their life, i think they overheat is usually what kills them.
  14. 2

    Most cost effective use of $50 santan panels?

    short answer is yes its possible, longer answer if you dont wanna do the math on your consumption is you might need a few more batterys, and again why they say to do the audit. cuz you just might wanna wire it 24 or 48 volt when your goal is to run Air conditioners.
  15. 2

    RV Remodel: 28KWh LiFePO4 + 3KW Solar + 2 Quattro 48/5000 Split Phase

    Have you figured in the current draw of your auto leveling system. Mine is 12 volt and pulls over 200amps.
  16. 2

    Rv project for a new guy..

    wow , 500lbs is nothing thats horrible, maybe mount your batterys in your tow righ? how big is your water tank, maybe bring 10-15 less gallons of water and get some hard panels.
  17. 2

    Rv project for a new guy..

    i would ditch the flexible panels the rest of your stuff is a great start. those panels will be glued up there and start losing output and die sooner than you think then your best way to remove is to get a new epdm roof , pain in the behind. sell those, or use for a home based project or maybe...
  18. 2

    camper trailer battery

    any lithium battery needs a bms, doesnt matter the physical location of the battery in the tow vehicle or trailer. you should be able to drop it right in place. Your factory lead acid charger might not bring the battery to a full charge , but if its newer it might have settings for different...
  19. 2

    On grid and Off grid using SolarEdge and Growatt

    im still not understanding the benefit to being grid connected. Why bother connecting to the grid? When we went solar it made it alot more complicated and the equipment is more expensive if we wanted to keep it grid connected, You save on batterys, but as you see its totally usless when the...
  20. 2

    Can starter battery & house battery share negative on car’s metal chassis?

    It seems some folks dont quite understand unibody vs on frame vehicles. any on frame vehicle (full size rv, Jeep wrangler, pickup truck is built on a frame with 2 metal beams, those are the best ground doesnt matter where you attach as long as its solid. And yes the OP is right most fires are...
  21. 2

    Upgrading my system..fridge needed

    or tap a hole in the bottom and run a gravity drain line with a valve on it.
  22. 2

    Best way to wire panels for shade

    depends where you live, im on a farm and we have to spray ours down fairly often or they get dusty and you can see it on the output
  23. 2

    Cracking the Whip on Solar

    We have 2 ebikes that we keep on the rv, its nice to charge them with solar.
  24. 2

    Sizing a whole house generator for a 3 Ton Air Conditioner

    Ya but its farming so hit or miss on the rain. Normally just a month or 2 a year, some years like last year we didnt need to irrigate most of the fields. I forgot we use same diesel for a couple small tractors we use to mow and pull trailers around the farm . We have off grid solar to run...
  25. 2

    Is a 2 wire start generator the same as a remote start generator?

    potentially yes that could work post a schematic
  26. 2

    Sizing a whole house generator for a 3 Ton Air Conditioner

    lol bounder can barely pull it, not legally. i think its about 6000lbs plus the steel trailer is probably another 1200-1500 Generator is for the farm mostly for irrigation well pumps. in a dry summer we can easily go thru 3000 gallons of diesel a month. Farming gets expensive lol.
  27. 2

    inverter shut off

    just add a second battery, if the problem your system is draining battery too much what is the idle draw on your inverter?
  28. 2

    Using battery bank with generator switch

    Gonna depend on your well pump, mine is about 18K watts startup and 4000 running you need to figure out what pump you have and the specs on it they vary greatly in power consumption and output
  29. 2

    Sizing a whole house generator for a 3 Ton Air Conditioner

    i agree with offgridinthecity if its just for AC mini splits is a great way to avoid needing a large generator. those standard 7K gas driven units are loud, i would definately listen to whatever unit you are considering and how loud it is when running if its located close to living space
  30. 2

    Sizing a whole house generator for a 3 Ton Air Conditioner

    i would look at used cummins, detroit diesel or caterpillar generators. I picked up a 125KW Cat for $8000, rebuilt it for $2K, 10 times the output and half what you will pay for a generac
  31. 2

    Tiny Solar Project

    why not just do like everyone else and use a charge controller, you just need panels and a charge controller
  32. 2

    Already outgrowing my new solar system

    Get a generator if you think your current setup is all you need once the house is done. your battery is way to small, my rv with 2 ac units would not work with what you have, not even close. you need about 3 to 4x the battery capacity
  33. 2

    Looking for All-in-One Recommendation for Motorhome

    i left the rv native on coach battery (beefed up the batterys) and put in a seperate coach2 battery bank. its got inverters and runs the tvs, electronics, half the lights both have seperate charge controllers and panels. nothing critical to offgrid survival, creature comforts battery bank...
  34. 2

    Multiple Charge controllers to one battery bank

    would reconsider your panel choice... a few holes is not a big deal... once that flexi panel dies, how you gonna get it off?
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