diy solar

diy solar

Recent content by Mrgulabull

  1. M

    2 AWG AC Cable?

    Thanks for the detailed replies, RCinFLA and pvgirl! Just what I needed to know. :)
  2. M

    2 AWG AC Cable?

    Thanks for the reply. I am off grid and will not supply anything on the AC input side, all power will come from batteries. I was looking at page 18 of this PDF that describes maximum AC output amps of the 5kva model...
  3. M

    2 AWG AC Cable?

    I've just purchased a Victron Multiplus II 5000kva 48v 120v inverter to replace a failed Growatt. The Victron manual calls for 2 AWG on the AC output side. I'm quite comfortable and familiar with DC cabling, but am a bit lost when it comes to AC. I've looked all over for a 3 conductor 2 AWG...
  4. M

    Grounding two separate systems

    Thank you. I just checked and confirmed the second inverter is floating, there is no continuity between N and G on the AC output (48v growatt 3000 TL LVM’s). I’m seeing ~55v on the second inverters neutral line, where as the first inverter (which is grounded to earth) shows 0v between N and G...
  5. M

    Grounding two separate systems

    Sorry, I don’t quite follow. Are you saying to break the N / G bond on the first inverters panel and only have it on the second AC panel? Or are you saying to N / G bond on both AC panels? Just to confirm, the systems are completely separate on the AC side and as far as I’m aware there is no N...
  6. M

    Grounding two separate systems

    I have a bit of a strange setup and after lots of searching have been unable to find an answer on how to properly ground my systems. I am completely off grid, and have two inverters that each have their own separate AC panels. One inverter is always on and powers the majority of the house...
  7. M

    Trophy Batteries

    Based on a few months of use now, and lots of monitoring, I’m fairly certain these issues are simply a matter of the BMS incorrectly reporting the SOC. Background - I have 3 of the 105ah 48v EVE batteries in my bank along with a couple other LFP batteries I bought a few years ago. I’ve been...
  8. M

    Growatt 3000TL LVM Fan Replacement?

    Sorry to resurrect this thread, but thought I'd provide an update for anyone else that has a fan failure. I opened the case and confirmed it's an 80mm fan with a 4 pin connector. However, the tabs and size of the connector are non-standard. I tried using a typical 4 pin computer fan and it...
  9. M

    BMV 712 gets update with historical trends

    This featured worked for me for at least a few weeks to a month after release. However, now it's the same as what you're reporting, it does not seem to store trend data once the app is closed. I've seen several more beta releases since it stopped working and it has not brought historical trends...
  10. M

    Growatt 3000TL LVM Fan Replacement?

    One of the fans on my Growatt 3000TL LVM seems to have failed and I'm seeing an error code 001 which corresponds to fan failure. I'd like to replace it with either a stock Growatt fan of the same model or any other off the shelf fan that would be compatible with the inverter and not throw...
  11. M

    BMV 712 gets update with historical trends

    After downloading the app, there are two firmware updates that the app will initiate to enable these features. I have almost 24 hours tracked now, so far so good!
  12. M

    BMV 712 gets update with historical trends

    Just wanted to share this exciting news for any other Victron smart shunt battery monitor owners. I've been anxiously hoping for this feature for the last year and it's finally available in their beta release of the app. Long story short, every time you closed the app or disconnected from the...
  13. M

    Growatt 3000TL LVM 48v - Parallel Single Phase?

    I don't think that's necessary. I don't see any mention of an additional breaker between the AC output and subpanel within the manual (pages 5-6) https://www.ginverter.com/upload/file/contents/2019/06/5d0355a465ff4.pdf Just be sure to size your wiring correctly (6AWG) between the inverter and...
  14. M

    LIFEPO4 @ 100% SOC long-term?

    Haha, yep, I went deep down the youtube rabbit hole on water generators. I saw a guy essentially diverting an entire river worth of water for a measly 500 watts. They look like fun to build, but decided they would only really make sense if you lived in a cave with no access to the sun.
  15. M

    LIFEPO4 @ 100% SOC long-term?

    Haha, that’s a pretty good idea, might have to read into it.
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