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  • I just received approval to operate - thanks to this forum!

    Hey everyone, Two years ago, I had a vision to build a cabin in West Virginia. I bought 20 acres of land and started planning and designing the cabin. I told my wife at the time that we had an amazing opportunity that we've never had before where we can actually stop coal from needing to be...
  • Just finished my solar mount!

    Holes dug South poles sitting in the holes All poles placed, south poles plumb and level All poles plumb and level Concrete getting poured (total of 5 cubic yards) First panel up First 4 Aaaaand... DONE!
  • Can we get dark mode in here?

    Super random, but @Will Prowse any chance this forum can get dark mode as an option?
  • Beginner: Planning out full Off-Grid PV system

    Hey everyone - I have questions! Basic background info: - Building a large cabin in the woods - Designing for being fully off-grid year-round - Will install a large backup propane generator as a just-in-case (pays to be prepared) - Solar panels will be ground-mounted - Prefer the solar panels...
  • New batteries now, or in a year?

    Signature Solar has some great incentives right now for battery banks - free shipping and a free server rack tower. I will likely need another 30kWh of storage in about 8 months, so should I take advantage of the sales now, or should I wait and see what the market looks like later?
  • Safe to store inverter in freezing temps?

    Hey everyone, I have built a shed on 20 acres of land where I'm starting my PV install. Is it OK to leave my inverter there through the winter in an un-insulated shed? It will likely get down to ~10 degrees F for a few weeks during the winter. I have built a load center with a 30-amp RV plug...
  • Wiring question

    Hey all, 99% sure I've decided on using 4x growatt 5k ES (in total) connected to 1200ah of batteries (2 different server racks in parallel). Each server rack bus bar is rated for 600 amps. I need 2 different bus bars to connect the battery racks (one positive, one negative). Does this mean I...
  • Communications when mixing charge controllers

    Hey everyone, out of curiosity, is it possible to mix communications from charge controllers to batteries if you have two different charge controllers from different manufacturers? I assume I can't, and should just specify the voltage settings in each charge controller separately, but I wanted...
  • Large Ground Mount: galvanized steel or not?

    Hey all, I'm about to build a ground mount for my solar array, and I need ~333' of 3" sched 40 steel pipe. It's significantly cheaper to get non-galvanized steel (like, nearly half the price). I'm trying to figure out if I can avoid paying the 2x cost for galvanized steel. Is this a...
  • Why are my solar panel MC4 connectors like this?!

    Take a look at how these Solarever 455w panel MC4 connectors are... what possible value is there in this??? I actually couldn't detach one after connecting to the panel next to it, so I had to cut the plastic piece out with a razor blade! I've attached a picture of the MC4 connector that I used...
  • Set up 6500 EX with eg4 batteries: user mode doesn't charge properly?

    edit: It seems that after I went back and restarted after a day of running with the EG4 setting, the USE setting also seemed to work fine, so this isn't an issue! Leaving the description for posterity :) So I've finally received my eg4 inverters, and I've put things together in my living room...
  • 6500 Ex Inverter Massive Under and Over Voltage!

    I have 2x EG4 6500ex inverters connected in parallel, and I'm finally testing them long-term. I'm SUPER CONCERNED because I'm seeing massive voltage dips and spikes on the AC output all the way as low as 111v and as high as 129v. Is anyone else seeing this? I bought these inverters in August...
  • >12 EG4 Lifepower batteries?

    I'm considering expanding my current ~61kWh battery (12 eg4 Lifepower batteries combined) to 2x this, but due to the lack of dip switches, the EG4 batteries can't be expanded for communication with more than 1215 batteries. What do people recommend for adding more batteries to this setup...
  • Gut check - am I crazy?

    Hey all, I'm about to pull the trigger on purchasing $37,859 worth of solar equipment for a whole system consisting of: 60kWh battery storage 24kw of panels 3 inverters etc (all the other things) The intent is for a fully off-grid large cabin in the woods (new construction). I've done the math...
  • Load, solar, and battery charge discrepancies

    Hey everyone! I have two 18kpvs paralleled, with grid input acting as a backup, plus 61kWh of battery storage connected. I have a victron smart shunt connected to solar assistant to get precise battery measurement details, as well as both inverters connected to SA over wifi. For some reason...
  • How to set up two EG4 Lifepower battery banks to communicate with each other?

    So I see the manual says that for two battery banks you're supposed to connect them to a common bus bar (this is easy) and have the batteries communicate with each other (all 12). But for communications, how can you actually get a cable to reach from the first rack to the second rack? The cables...
  • Connecting a charge controller to bus bar

    I'm going to have a separate MPPT charge controller connecting to my bus bar (going to battery bank), but I wasn't sure what the best way would be to connect a smaller gauge (6 awg) wire from the charge controller to the bus bar. Is there a standard connector I should use?
  • Mixing solar charge controllers

    Hey everyone, I have two EG4 6500ex inverters, and one Victron SmartSolar 250/60 charge controller. I'm testing out the components of my system and seeing that when mixing the charge controllers in this manner, I'm not sure the battery state of charge is being measured accurately somehow. Right...
  • EG4 18kpv Default Settings & EPRI Common File Format?

    Hey everyone - I originally wasn't planning to have my cabin be grid-interactive, because I didn't want to buy solarks, and at the time the 18kpv didn't exist. Fast forward to today, I have 2 of them installed in parallel with grid input acting as a backup, in case my batteries get drained all...
  • Making my own 72v battery?

    Hey there, A few years ago I bought a tracker - electric UTV-type vehicle - it's an older model of this thing: https://www.trackeroffroad.com/side-by-side/ev-is.html. It runs on a 72v battery setup, but they're all lead-acid batteries which I hate. I'm thinking of converting it to a lifepo4...

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