diy solar

diy solar

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  • Batteryhookup

    Nice guys, super helpful. Time to get to work.
  • Think your car is cool?

    I know it's not diy, but I like it and I don't know why more companies don't do it. So far 24kwh generated and 76 miles.
  • GROWATT SPF 3000TL function questions

    I'm curious how prioritization works on these. For solar-battery-grid, if solar isn't enough, will it dip into battery for only what it needs, or switch to battery entirely? For solar-grid, without a battery, the same thing. Say the load is 1000w, and solar is only producing 500w, will it...
  • Should i top balance now or wait?

    Should I top balance my 16s battery now or wait until it's time to put into production in about 2-3 weeks? I still have to finish the power room, racking, inverter wiring. Which wouldn't take much but I have other projects going on and working and wife and kids and the whole lot. My cells are...
  • Bus bar pictures

    I'm looking for visual inspiration of some bus bar designs. I'm looking for 4-6 15kwh battery connections @100a each, with 4x 3k inverters. I'm building one battery/inverter now, but will be looking to scale that out in the future, so i want that capability. If anyone has a picture of what they...
  • Do you own an EV and charge with solar?

    One of my biggest motivations of building out a solar system is getting truely off grid, and that means everything, vehicles included. Which means I need sufficient production to also charge a vehicle. My current system I'm building is 4.2kw with a 3k inverter and 15kwh battery, but once...
  • bms heat generation

    I have my batteries in a sealed and insulated cabinet. Does the bms generate any measurable amount of heat? It's in the basement on a concrete slab. Should I put it outside the box or is it ok inside? The box is almost the exact dimensions of the cells. It's a sp17s005 16s bms from BHU.
  • Oukitel P2001 Portable Power Station annoying relay click and beep

    I recently bought the oukitel and paired it with 2 240w sharp panels in series to power my deep freeze. It's been working great, with one exception. In the evening, when there is just barely any light, the panel input is registering 000 watts, but a trickle is flowing through periodically. Any...
  • Hello, i have questions

    Hello, i have many plans for solar and power. I have an engineering background and am pretty handy. I just built my garage, and had the trusses engineered to take 6000lb of solar panels, but I want to start small first. First, I'm going to build a trellis off my back porch that I want to hold...
  • Simulated daylight

    I'm going to have to temporarily put my chickens in a shed with now windows for a few days while I make some modifications to their coop and run. It'll be fully kitted out with everything they need, with the exception of light. Chickens lay based on their light cycle, and no light will really...
  • How does it work

    I'm a jump first, look later type of guy, but I'm not sure about this. I have a 3kw growatt, a 15kwh battery, and 4.2kw array. I set my inverter to stop discharging the battery at 20% capacity remaining. The sun sets, the battery is at 100%, the panels go dark, and I'm using 1500w of power. I...
  • Dumb heating element and water pump

    In my shop I have radiant floor heat, except I never hooked it up. It's a hot water system. Due to complications of inflation, I still don't have the 400' of 0-4 wire run to the shop from the house, so my electric hot water and circulation pump system has not come to pass at this point. That...
  • ring terminals

    My bms wire is 24awg and i need m6 ring terminals. The only thing I can find is m6 to 16-22awg. Will that be small enough to get a good crimp?
  • String mppt in series

    I have this AIO battery/inverter/mppt, but it's solar input is 33-60v. My panels are 37voc, which means unless it's peak production, I'm not getting solar. The question is, victron has this 48v mppt. Can I hook my panels up to the victron 48v mppt then send that 48v out to the solar input on...
  • Grid tie solar with backup

    I like to think that I don't sniff glue, but I had a thought in the shower last night. I have a small array I'm building, 4.2kw. I'm picking up a growatt 5k grid tie inverter. The inverter needs a sine wave supply from the grid to start taking power from the panels and supplying it to the...
  • Wiring panels to inverter

    I have 6 panels in series on the roof, and a growatt inverter in the basement. My first idea would be to just strip off some 14-2 romex and put on some mc4 connectors then toss the roll off the roof then drill a hole in my house, and pull it through then make the appropriate connenctions to the...
  • Transformer location

    If I set up a small grid tie inverter on one leg and it produces more power than is consumed by that one leg, will it flow back through the meter, then to the other leg? Or will it hit the other leg before hitting the meter?
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