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Hatish

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  1. Yes, its the old analogue meter that spins. I didn't think that pushing power into the grid was an issue, based on what was told to me before. But I am definitely looking into it further.
  2. Ahhh, ok cool. I didn't see 8A anywhere, so I was wondering. But now I know Hmmm. I have had two installers tell me that this is not a problem, that my meter is bi-directional, and so it will simply roll back the kwh count. I am in Durban (Ethekwini municipality). Anyone have any more info on this area, do share
  3. Apologies, I may be making this thread a bit messy now, but lets keep it all in one place. The plan is to also have battery backup, using 2 of these (48v 120ah 6.1kwh LiFePO4 Wall Mount Solar UPS Battery). Will these work well with this Inverter? The operating mode of the system (hopefully) is to use the grid as my primary battery, push generated power into the grid as long as batteries are full, and have use from the batteries when grid is off-line, eg load-shedding. Does this make sense? What should I be concerned about?
  4. I'd go with 9s2p (9 series in 2 parallel strings). 49.1Vx9 = 441.9V with 8Ax2 = 16A for 7000W Do you mean 9 in series on each MPPT, since the inverter has 2? Also, where do you get the 8A from in the calculation? The spec says 18A + 18A, which I assume to mean 18A per MPPT. Am I missing something?
  5. Thanks for the feedback Unfortunately, our usage is high, about 50kwh per day, and it really should not be. I am waiting for one of those power usage meters to arrive, the type you can just wrap around any cable to get readings and monitor. Then I can start the exercise of figuring out where my power is disappearing to. But otherwise, we have 2 pumps (pool and water pressure), 2 fridge, 2 freezers, solar geyser with power backup, 3 PCs (only during working hours), 1 LED TV, 1 Washing Machine, 1 Dishwasher, and the usual lights, etc The 8kw inverter is more for future growth. Installation cost is a consideration, and so I would prefer to do this once, and not have to interfere for some time.
  6. So I am very new to solar, and am trying to spec a system for my home. I will use an installer, but I am trying to learn for my own knowledge, and to determine if I am getting ripped off. If there are any guides out there to help with determining this, please share. Otherwise below are the details of my own exploration. I am looking at the Sunsynk 8Kw Hybrid Inverter 48v IP65 Panels as follows: ARTsolar – 400 Watt Solar Panel – Mono Percium High Efficiency – Full Black (link) Inverter specs for panel input: Max power input – 8800W Max V DC input – 500V DC Max current input – 18A + 18A MPPTs – 2 First question: The 500V DC input, is that total, or per MPPT? Panel specs (NOCT): Max wattage - 302.00 Max Voltage - 39.60 Max power current (amps) - 7.66 So I am trying to figure out how many panels to get, and what is a good combination for them. (I hope I am using the term string below correctly) If I go with wattage, then I can get 14(serial) x 2 panels. This gives me: 8456W, 554.4V (per string), 7.66A (per string). Voltage is too high, but amps are good. To improve voltage, I can go 7(serial) x 2(parallel) x 2 panels. This gives me: 8456W, 277.2V (per string), 15.32A (per string). This looks better. But voltage may still be too high, if it is based on the entire system, and not per string. So is my thinking on the panel sizing correct? What are the hard limitations around voltage, amps, etc? Can I over-volt the system, and then have some sort of limiter or overflow manager? Maybe that is done automatically by the inverter? Any assistance is appreciated.
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