Recent content by znh

  1. Z

    Amazon Shipping to South Africa

    Quick feedback. I had to contact amazon 4x times. Three times I was promised that the transaction will be processed in 5 working days and nothing showed up on my account (Using my linked Capitec debit card). Somewhere along the way this debit card expired too so I loaded a new card. The last...
  2. Z

    Amazon Shipping to South Africa

    Has anyone ever been refunded their "import fee deposit"? I needed to replace a laptop fan so I imported via amazon (.com) and also added 2xSSDs, and a couple of sticks of ram about 7 months ago. None of those should have any import duties but they added the "import fee deposit" of $26 just to...
  3. Z

    Webafrica Cancellation - Router return

    They also demanded I return the router that I got when signing 5+ years ago. I was under the impression that it was covered in the 3 year contract I signed (I was one of the first people that got FTTH on openserve) and after the 3 years it would be mine, anyway I do not want that router even if...
  4. Z

    ARB orders Webafrica to better disclose "hidden" R499 processing fee

    My line went offline over a weekend and could not get hold of anyone rendering my "smart" home offline too. So I cancelled the line after using them for 5+ years, they then demanded that I need to return my router they sent me to neology or be charged R999 for the piece of e-waste. Luckily I did...
  5. Z

    Rolling Blackout Detector (Experiment)

    Pretoria as reported by my Deye inverter
  6. Z

    Monthly Solar Production - Show us yours

    Heatpump consumption for the month: 53.97KWh (runs early morning 3:30am and 12PM most days) 5.9KW panels and plenty large trees (two strings 4S2P & 5S) 460W JA solar panels 8KW Deye 10 KWh DIY battery Interesting to note that I am cycling my battery aggressively down to 20% (if needed) and I...
  7. Z

    Help with Centurion garage motor and smart sensor

    The 220V is only used to charge the batteries, you need something that operates on low voltage. Eg my gate motor is 12V, I installed a sonoff SV to open/close the gate.
  8. Z

    Monthly Solar Production - Show us yours

    6KW PV ( 2.3KW mounted flat, 3680KW mounted North east) plenty shading from big 70 year old trees. 66.89Kwh went into the heatpump (runs 3.30am and 12pm most days) 10KWh DIY battery from second life BYD Cells
  9. Z

    Speedster's solar journey

    If you have a voltage drop to 216V due to long and/or small wires you are still paying for the losses. Lets say you are pulling 13A on your 3KW element. Then there will be 14V * 13A = 180W of losses for your pocket that will be billed on your meter while the geyser will only output 216*13=2.8KW...
  10. Z

    Monthly Solar Production - Show us yours

    Been meaning to add my stats too... 13 x 460W JA Solar panels (6KW), 4S2P North-East, 5 Flat mounted. With plenty shade from 70 year old trees. Heatpump consumption for July 52.55KWh 10KWh DIY battery (second life cells)
  11. Z

    Inverter connections

    The plug needed will be called a "widdow maker" for good reason, very dangerous. Normal 230V outlet plugs have a limit of 16A wich is roughly 3500W. American plugs 110V are limited to roughly 1800W (according to google).
  12. Z

    DC solar cable length

    Yes there is no issue with having different cable lenghts on PV. High voltage and low current means that voltage drop is not an issue. I would suggest you buy some MC4 connectors and make some extensions that plug into a panel lead and into your microinverter. If you cut the original MC4 off the...
  13. Z

    12v Lithium Ion batteries for alarm/garage doors/etc - Where to find?

    Most battery places will give you a few bucks for the used batteries (even the small 7AH ones), they recycle them. They contain lead that should not end up on a landfill
  14. Z

    Backup battery for Cctv camera + dvr

    The voltage is not the problem, but the internal resistance of the battery is very low, which means that the battery will accept very large charge currents. Hence the reason why you can charge a EV up to 80% in 45mintes. If the power supply does not limit the current then you will have max...
  15. Z

    Backup battery for Cctv camera + dvr

    I guess if you have a solar panel on the roof and a PWM to always charge it then it might work fairly well. I tried Lead Acid, moved over to Lithium and never looked back. I did forgot the lithium battery plugged in (during loadshedding on friday) went away for the weekend. BMS cut off the...
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