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  1. R

    Off grid/On Grid Hybrid system

    Thanks, the extra info helps explain part of it ... but I still don't get the left column ... KWH ... the numbers don't seem to corelate. Either way, it's a great result. How long have you had the extra solar, because it seems like a pretty low useage.
  2. R

    Off grid/On Grid Hybrid system

    Congrats on the achievement, it must be a great feeling. I must be missing something with their graph though ... the numbers don't make sense to me. So for May 2024 you used 2.7kWh ... or 2.7 x 10kWh ??? :)
  3. R

    Breaker vs Battery disconnect switch

    I wasn't aware they made them. With a quick look I can only find them up to 250A ... do they make 300A or higher? Only need up to 60V ... not 150 or 300. Certainly if I can get one it will kill two birds with one stone. It was fitted in series with a 300A DC breaker to add a remote...
  4. R

    Breaker vs Battery disconnect switch

    Haha, I'm picturing a metal weight on a piece of string ... with the weight stuck to a tiny electromagnet. Cut the current to the electromagnet and the weight drops ... pulling down the cct breaker. :p
  5. R

    Breaker vs Battery disconnect switch

    Yeah, I always think of that too when I turn one off ... so little force needed to make it click off.
  6. R

    Breaker vs Battery disconnect switch

    Exactly ... same conclusion I had come to.
  7. R

    Breaker vs Battery disconnect switch

    Understood, of course you never want to have to switch them under load if possible. Having said that ... I'm running 48VDC and not 320 ... so that should buy me a few extra cycles ... and my 300A fuse should blow at some stage before it gets to 2,000 amps.
  8. R

    Breaker vs Battery disconnect switch

    Yes I agree. In my case I have a standard large 300A DC cct breaker, along with this solenoid in series ... and under normal circumstances I turn off the AC output from the inverter ... then switch off the DC supply via the kilovac. These solenoids are used widely in the EV industry and...
  9. R

    Massive Texas power outage

    Wow, you're a lucky man. That's the sort of thing I do, but not always lucky. :)
  10. R

    Massive Texas power outage

    I can't see how they are attached to the I-beams ... I assume they were otherwise they should be in the next state by now. 😁
  11. R

    inverter repair

    That's very surprising to see something as detailed as they have provided. Only thing missing is an actual circuit diagram. Certainly very helpful for anyone working on that particular inverter. Unless I've missed it, you still haven't said what brand and what model your inverters are. A link...
  12. R

    The next thing? Inverter or Battery? All in 1?

    Haha, thanks very much. Thanks :) The inverter design is by Warpspeed who's here on this forum. There's a thread all about the concept here. I built the inverter and wound the transformers etc over the last three years with lots of guidance from Warpspeed. There's some threads about it over...
  13. R

    The next thing? Inverter or Battery? All in 1?

    Here’s some of the things I wanted in an inverter and you guys have mentioned a number of them as well. The idea of having all the switch gear inside the inverter was attractive to keep it simple and neat … and avoid lots of interconnected boxes on the wall ... and the bare minimum of...
  14. R

    Warpverter

    I have read all that I can find ... but none of it mentions the parameters that I saw online while connected to the history of the actual inverter I bought. That's where I saw the 253V maximum figure. Wish I'd at least screenshot all the settings. Frustratingly I can no longer even find the...
  15. R

    Warpverter

    Yes. Agreed Haha, very good question. Definitely, me too. Yeah ... so how do I find out? Ask someone who knows? Where do I find such a person? Read all the setup data and somehow interpret that? What if I simply wind the Warpverter output up to 253 and see what happens? Am I game? 😁
  16. R

    Warpverter

    Thinking about it ... the only time I've seen the AC-out over 241.5 has been when the Growatt is pushing heaps of current back through the Warpverter ... and as I mentioned above, presently the Growatt is set to limit the output if the AC gets to 253V. I saw it get to about 246v on the...
  17. R

    Warpverter

    Warpspeed's already answered some of this and can explain better than I can ... but yes, directly into the AC-out of the Warpverter. Yes, the loads were often up to 6 or 7kW over and above the 5kW the Growatt is contributing ... although first thing in the morning there's not much load on...
  18. R

    Warpverter

    Hi, there haven’t been any comments here lately so I thought I’d update some details on my Warpverter installation. I mentioned a while ago that on good solar production days I was running 6kW of underfloor heating for hours every day After a only a few days of this I realised that it really...
  19. R

    Hot water preheat tank for instantaneous gas system

    Thanks for the explanation. I shall mull it over for a while.
  20. R

    Breaker vs Battery disconnect switch

    I never knew they made such a thing. I have a couple of Kilovac solenoids to isolate gear in my system ... though may be overkill in this situation. 12-900V contact rating and 500A switching ... and 48-72V coil with economiser to reduce hold in current. The contacts are in a sealed...
  21. R

    Hot water preheat tank for instantaneous gas system

    Hang on ... so at your house you have your new HPHW feeding into your original propane hot water tank? ... which is just used for additional storage? ... or gas heats that to keep it up to temp? Yeah we do have a filter in the kitchen.
  22. R

    Hot water preheat tank for instantaneous gas system

    Thanks for pointing that out. Encouraging. And no, I'm definitely not worried about bugs in the water being fed in to the cold side ... it's the same water we drink and use in the house from the rainwater tanks ... and have been for years. I am inclined to agree. I know lots of people are...
  23. R

    Hot water preheat tank for instantaneous gas system

    Looks like a very handy device. So is there any reason I can't fit a preheat water tank set to 60C (for safety from Legionaires) ... and fit one of the mixing valves on the outlet set to reduce to say 35C ... a few degrees below the lowest expected outlet temperature ... then let the gas...
  24. R

    Hot water preheat tank for instantaneous gas system

    Yes, we definitely do that now ... and it is easy with a push button temp control for each shower. But we need 39C for MIL shower and 43-46 for everyone else ... so a preheater has to be below 39C ... so of course that raises the Legionaires issue. I can see I'm probably biting off more...
  25. R

    Hot water preheat tank for instantaneous gas system

    Thanks, I've had a good read of the specs and manual and can't find any reference to a max supply temp. I'll keep looking. Good point, and yes it's really only on an extension from a bath so should be easier to do than ripping out the mixer in the shower alcove. My understanding of the...
  26. R

    Hot water preheat tank for instantaneous gas system

    Thanks for all the comments so far. I'm supposed to be working so I'll work through it all later tonight. :) We have a Rinnai Infinity26 and I downloaded the manual and did a quick search but so far can not see a maximum supply temperature. There's a chart that shows the max temp increase per...
  27. R

    Crimpers - How do you manage those annoying flyaway strands (not a haircare thread)

    I didn't have much success with the zip tie method ... fat thumbs ... so ended up getting some light galvanised twitching wire ... holding it parallel to the cable ... bending it at right angles at the start of the stripped section ... then winding 5 or 6 turns around the strands. Then...
  28. R

    Hot water preheat tank for instantaneous gas system

    I didn't want to derail the diy thread but this comment got my attention. Now that we have this place on solar, I'd love to have a hot water preheat tank ... but our system is an instantaneous gas one and it is very handy in that we can dial up a temperature and not have to worry about the...
  29. R

    Thanks,Dad, For Teaching Me to DIY Stuff

    My dad was a farmer and did everything needed doing. I wasn't always keen to help but so thankful he made me help as I learned a lot and can tackle anything now too. I've recognised for years that he's who I got my work ethic from. I'm still trying to teach my 10 year old son similar skills but...
  30. R

    MASSIVE Overpaneling -MPPT input current

    I don't know the answer to the OP but I see an MPPT as "ALLOWING" power through ... not DRAWING it ... or having it PUSHED. If that is the case, then the analogy of a load plugged into a normal AC outlet should apply. As long as the voltage max is not exceeded. Anyone wanna experiment and...
  31. R

    Who here has the best dump load management system going on?

    I'm going through the same thought processes myself of maximising the use of power generated. We're heading into winter here in Oz so I've been manually turning on a couple of 3kW underfloor heating circuits whenever I see there is unused power available ... to try and heat soak the house as...
  32. R

    Does anyone on here repair faulty inverter boards - shorted fets on Sunny Island

    Yes, 48V ... and agreed ... and I was surprised at the physical size of them. Was expecting much bigger or a huge IGBT module. My first thoughts were to look for a higher rated device to replace them ... but I'm not keen to risk introducing other issues. And then I remind myself that there...
  33. R

    Does anyone on here repair faulty inverter boards - shorted fets on Sunny Island

    I like jobs like that. Best of both worlds. Effectively three identical circuits with one still working. ... and all in the same box. Well worth trying what you suggested. I'm always surprised at how often just a couple parts cause all the grief, though of course there are always exceptions...
  34. R

    Does anyone on here repair faulty inverter boards - shorted fets on Sunny Island

    Thanks Hedges. It's starting to look like this was replaced under warranty ... and has sat around since, for quite some time. And the guy who brought it in may or may not be the local SMA installer. :sneaky: After fifty years repairing circuit boards, I love it when I finally figure out all...
  35. R

    Does anyone on here repair faulty inverter boards - shorted fets on Sunny Island

    Thanks JayArr, this is the sort of response I was hoping for. I repair circuit boards for a living too, just not necessarily inverters. That is extremely helpful, thank you. I know a lot of the guys building ozinverters etc do that as well. And even to the point of removing the input...
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