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  1. SeaGal

    Coupon Code for Overkill?

    Sure... try typing in "ICHEATMAY24" ;)
  2. SeaGal

    I don’t understand the behaviour of my Hybrid inverter. Please help.

    TADTS! Seriously though... for a grid-tied system I would expect a bit of meandering around 0W as the inverter tries to keep the import/export balanced, but certainly not a constant draw of 50 to 100W. From what you are saying, it sounds as though the Growatt thinks it is balanced (as...
  3. SeaGal

    JK BMS

    Do you know what options are available with the new S6 Solis range? I have an S5-EH1P and for that you could use the user-defined option in the Solis and basic SMA protocol on the JK (if it supports such). I'm not aware of other users on here having the S6-EH1P yet (they are not yet approved...
  4. SeaGal

    Deye 6kw CT location, distance

    When I was considering Deye/Sunsynk I thought there is also an option to use an Eastron power meter and just have the Deye/Sunsynk use the power data from the Easton sent over an RS485 data link, rather than have a directly connected CT. If that is an option with your Deye, then it could be...
  5. SeaGal

    DIY Battery via Smart shunt to inverter integration (Solis etc)

    (y) yes, I use SOC, temp and voltage as inputs to the charge current. LOL... yes... been there, done that... 2A doesn't work! Interesting... maybe that is firmware-related though :unsure:. Our Solis has been switching between 99% and 100% SOC every 30 mins or so, all afternoon.
  6. SeaGal

    Obvious question from complete newbie

    Welcome!.. the more we know, we know that there is more to know ;) You got the answer from the Solis+Pylontech expert on here, but do shout if you have any other Solis-related queries - there are a few of us regulars on here who have Solis inverters.
  7. SeaGal

    DIY Battery via Smart shunt to inverter integration (Solis etc)

    Just an idea for your code when you add the temp monitors... What I did with my code (which, as you know, was originally derived from yours) was to adjust the charge rate so it is not just based on SOC, but also dynamically based on temperature, in line with the datasheet for my EVE LF280K's...
  8. SeaGal

    Mixing 2 independent electrical systems

    Unlikely. As @hwy17 said. Most AC to low voltage DC power supplies are doubly-insulated switch mode PSU's that don't even have an earth connection on the AC side.
  9. SeaGal

    Mounting panels on side of house to cover balcony

    Now... why didn't I think of that ;)
  10. SeaGal

    2 x SPA3000 chargers? Anyone tried?

    Hmmm... maybe assuming they don't get too hot :unsure:🚒 Wondering if a resistor in series with the CT could have similar effect?
  11. SeaGal

    2 x SPA3000 chargers? Anyone tried?

    I just had another thought... Is the CT sensitivity configurable at all? I know you can double the output of a CT by looping the wire through it twice, but am wondering if it is possible to halve the sensitivity? If so, then maybe (and this is a quick guess, haven't had time to think it...
  12. SeaGal

    HA on RPi?

    Just trying to get my head around installing HA on a Raspberry Pi 5 running Raspbian. The HA guides recommend completely imaging the RPi with the HA 'specific purpose OS'. Is it not possible to just run HA as a stand-alone application alongside other stuff? Anyone done this? Have RPi 5...
  13. SeaGal

    2 x SPA3000 chargers? Anyone tried?

    I can't see how that would work :unsure: So, let's assume the house usage is 2000W and your panels are producing 1000W. The first SPA will see from the grid CT an import of 1000W. It will start discharging at 1000W to get the grid CT to zero Watts. As it starts discharging, the second SPA...
  14. SeaGal

    stock BMS wire undersized?

    Yes, my Overkill branded JBD uses 2 parallel 8awg wires. Following the thread I linked to in post #2 I monitored the temperature of the wires - they rarely get above 35C, which surprised me.
  15. SeaGal

    stock BMS wire undersized?

    Yes, but just don't staple those wires to some cheap plywood :eek:
  16. SeaGal

    SPH3600 and Fogstar Topband 5kw batteries

    That is a pain for us DIYers :( Assume you can't downgrade the firmware on your Growatt to revert to a version that does support third party batteries? What is initially strange is that AFAIAA Fogstar use Pace BMS which supports Pylontech protocol and you say Growatt support Pylontech too -...
  17. SeaGal

    stock BMS wire undersized?

    (y) yes, mine did.
  18. SeaGal

    2 x SPA3000 chargers? Anyone tried?

    Not sure about Growatt, but IMHO with my Solis, the internal feedback loop will do whatever is possible to get the grid CT value down to zero. So, unless the firmware is designed for parallel operation they will always fight each other. The fix, if the Growatts use an RS485-based power meter...
  19. SeaGal

    stock BMS wire undersized?

    I assume he meant the -ve power wires :unsure:
  20. SeaGal

    stock BMS wire undersized?

    I had similar thoughts about my JBD wires last year - see my thread here and the responses https://diysolarforum.com/threads/are-equipment-supplied-cables-really-big-enough-for-100a.73060/
  21. SeaGal

    Series and parallels

    I am well confused now o_O. Can you draw us a diagram? Not sure if you have one or three battery packs (one shared or one for each controller). What chemistry battery are you using and why do you say you can't exceed 80Amps yet also say don't want to exceed 20A per battery :unsure:
  22. SeaGal

    What is Grid tie current

    Is the Y and H hybrid inverter G99 compliant and type tested for connection the grid?
  23. SeaGal

    Series and parallels

    If the controller supports only 100V input max, then you can't connect two 49.92Voc panels in series without exceeding 100V at lower temps than 25 degrees C.
  24. SeaGal

    Does anyone have experience with white PV panels

    Presumably with black deemed as 100%? In real terms, black panels are only 22-24%-ish efficient. At the end of the day, personally I wouldn't rank colour above efficiency, so I'll stick with your Henry Ford's stance of "Any color the customer wants, as long as it’s black.”
  25. SeaGal

    Does anyone have experience with white PV panels

    No, but I'd like some green ones to match the grass for my ground mounts if I didn't lose any efficiency :ROFLMAO: I suspect white ones are not going to be that popular! And I'd question whether white and black are colours or just shades of reflection, but I'll leave that for another thread ;)
  26. SeaGal

    Interesting problem over paneling with parallel strings

    Ah! Proper electronics where you can see the components without an electron microscope ;) And Veroboard and directly soldered IC's :)
  27. SeaGal

    Octopus Energy will no longer require MCS certification in the UK

    I understood Octopus were accepting users, but subject to an assessment fee, as reported here. https://www.renewableenergyinstaller.co.uk/2023/10/clause-5-8-has-octopus-really-removed-the-solar-certification-requirement/ Would be good to hear of others if they have been successful with their...
  28. SeaGal

    Heater element matched to solar panel output = diode string

    Hmmm... "Just" is not the adverb that springs to my mind.
  29. SeaGal

    Solis S5-EH1P6K-L incorrect load readings

    Having just looked at the graphs in more depth, IMHO I would say that the "load" being reported is simply the sum of the house load and the battery charge, but corrects itself once the battery is charged. This fits with you saying.. But that is different to SMcS's customer where the "load"...
  30. SeaGal

    Solis S5-EH1P6K-L incorrect load readings

    Sounds like @shavermcspud has the answer, but my question would be whether the "load" you are seeing is actually happening as far as the inverter is concerned or whether it is just the chinese remote web report that is wrong. When this issue happens, can you see what the Solis is showing on its...
  31. SeaGal

    Interesting problem over paneling with parallel strings

    I guess the long averaging period has to be weighed up against changing illuminance :unsure: We seem to have so many sporadic clouds in East Anglia recently my power output is up and down like a yo-yo.
  32. SeaGal

    Solar without batteries

    My Solises are in a garage 30m from the house. For safety (of batteries) as well as inverter noise reasons.
  33. SeaGal

    DIY Battery via Smart shunt to inverter integration (Solis etc)

    But you've still kept us in suspense... did you wire the shunts in serial or parallel :unsure: ;) :ROFLMAO:
  34. SeaGal

    Solar without batteries

    (y) Solis S5 Hybrid.
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