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Thank you for the great forum, Safe Driving over the weekend. Sincerely Jason


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Bobster last won the day on March 20

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  1. I'm curious about this. I havea 60A main circuit breaker, but if it were to trip it would stay tripped until I physically reset it. So what is automatically resetting here? Or do you have an inverter that can handle 60A?
  2. Thanks. This completely explains what I am seeing.
  3. I have two arrays of 6 panels. One faces East(ish) and so generally by 9 I have quite a bit of solar power coming in. So my power curve is perhaps atypical and peaks at about 11:30. So I can turn my pool on at 9. But I take your general point, indeed have taken it and tried to move what loads I can control around to take advantage of solar power. My first adventure with non-grid power was a solar geyser, and I learned that to make optimal use of it we in the house had to change our behaviour to literally make hay whilst the sun shines (or has just finished shining). It's no different with my current system.
  4. I didn't say it was wired directly to grid. I said it's on the non-backed up circuits of the Goodwe. Indeed, at times the Goodwe is clearly sending excess power to the pool pump and other non-essentials.
  5. Which is what I suspected, but also what do I know? That clearly isn't going to work because the 20A limit is sufficient most of the time, but there will be spikes past that which will trip the Goodwe. It's also more than I want to do myself. Well, not more than I want to, but more than I know I can do safely and properly and without burning stuff out and replacing it.
  6. Hi all, My system is hybrid, but most days we buy only a small amount of power from the grid, and the numbers and graphs I get from SEMS portal lead me to think that my system actually has capacity to run our entire property on a sunny day. Now a while back, when I was bored, I used the app on my phone to put the system into off-grid mode. Straight away my pool pump turned off. The pool pump is not on the backed up circuits, but clearly (or according to SEMS portal) on a sunny day the pool somehow does run from solar power. So there must be a way for the Goodwe to send some power to the non-backed up circuits. So how can I try running the whole property? Do I need to do something* other than put it into off-grid mode? Is this possible? * something that doesn't involve an electrician (which I am not)
  7. I asked this question since I live in Jhb and already had a prepaid meter. Nobody I asked could give a definite answer, other than to say that my system must have anti-islanding (it does) and that unless I signed up for the reseller's tariff (which requires a special meter that I would have to pay for), I would get no credit for any power exported. Now... the rest may depend on what prepaid meter you have and who actually installed it. Mine was installed by City Power and is an Itron. It never cuts out, but it clearly doesn't like the alternative power source as the hand held unit (what you use for inputting tokens) constantly shuts down and reboots. My system is set to not export. In Goodwe parlance "no export" seems to mean "will try to zero the movement on the meter" and so a small amount is exported. What I find with the Itron meter is that it shows two totals. One is the total consumed by the property since the meter was installed (IE just like a regular meter), the other is the prepaid balance. The small exported amount seems to reduce the former but not the latter. But the discrepancy is small and any change of arrangements I make would result in flat fees each month that would be orders of magnitude more costly than that discrepancy. What has happened is that City Power came to my house to inspect the meter because I had gone so long without buying a token. We showed them the solar system and they said "oh, that's alright then" and haven't come back. I do use a small amount of grid power each month by the way. But really not a lot.
  8. OK... the spec sheet says it can handle short peaks of up to 30. But short is the operative word here.
  9. I have a Goodwe. Same capacity as the one suggested to you. One restriction we have run into is that the backed up circuits can only carry 20A at any time ever, even when grid is available. Most of the time this is not a problem, but I would like people to just be able to go about their business when the sun is up and we have a municipal feed, but it is possible to momentarily overload the system, and that moment is all you need. The system always reboots itself, and of course the overload is gone because everything got turned off and most of the devices restart in standby by default. But now you don't know how far the dishwasher got (and don't want to open the door to find out).
  10. I have a Goodwe inverter. The export limit is set to 0, but that doesn't actually stop all exporting. It tries to zero the meter for the day IE if I have drawn 0.6 kw/h from grid it will try to send that amount back. At least whilst the sun is up it will try. I'm in COJ. I'm on prepaid. What I find on my meter is that that the exported amount reduces the overall usage on the meter, but does not reduce the pre-paid balance. Thinking about it, prepaid meters must be more complex than a common or garden meter, and there seem to be a lot of examples of pre-paid meters that don't live happily with an alternate power source. Anyway, check what the manual says, As I note, setting export to 0 on my inverter doesn't actually stop all exporting. However, my meter doesn't see the exported power as extra use, for pre-paid purposes it just ignores it. Which costs me a few rand each month, but the alternative is to switch to a different COJ tariff which will require a new meter (at my expense), flat monthly charges and will pay me a less than generous amount for any power I export. So "leaking" a unit or so in a sunny week is by far the lesser of evils.
  11. Why is the pool pump on your backed up circuits? But I do understand the problem. My system switches over so fast and so silently that people don't notice. This is not too much of a problem on a sunny day, but in the evenings or overcast days it can be. But at least my pool pump won't drain the battery and the washing machine (doesn't use much) and tumble dryer (uses a bit) get no power because they're in the outbuildings and the outbuildings are not backed up.
  12. The guy who came to service my pump confirmed what I suspected, namely that the timer does more than just turn power on and off. It sends signals to the electronics mounted inside the main unit which initiate start up and shut down sequences. These don't take very long, but they do need to be respected. He gave his appy a bollocking for just turning off at the breaker, and then told me to never do anything like that - always turn it off from the control unit used to program the timer.
  13. Eventually tracked one down. The shop had 2 left when I called, and by the time I got there they were down to one. Said there'd been a run on these items after almost zero enquiries for a couple of years. Figures, I suppose, with so many people working from home now. I got a DLINK. VGA but that doesn't bother me too much. However, it uses the Scroll Lock key for the hot key functions (EG to switch devices). And it won't let it go. There's a way to assign the functions to a different key, but even after that the device still filters out any repeating by holding keys down. So, for example, you can't just hold the backspace key down to wipe out consecutive characters. You have to tap tap tap away at that key. Annoyingly though, it seems to insert double strokes at random whilst you're typing. I first thought my keyboard was gunked up and double strobing on some keys, but if I plug the same keyboard directly into a computer it works fine. You can't use a hub on the console side. It won't recognise anything plugged into the hub. But it does have two USB A sockets on the console side - so one for the mouse and one for the keyboard. And it will accept a wireless mouse USB dongle. On the plus side I did free up some desk space. No external power needed. It gets power over USB (indeed uses the power on the computer side USB connections to determine which connections have a powered up computer at the othe end).
  14. TIL that in Canada heat pumps are used to heat rooms in the winter.
  15. OK... I just found a guy who services on site. He says that the guys who take the unit away know diddly about pumps, so they just remove it, drop it off at a Kwikot branch and add a markup and charges for disconnecting and reconnecting. Mine is still heating, but it's taking longer. He says it is likely a loss of gas, but there may be other factors. NB.... the date stamp on the covers says it is 9 years old.
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