Jump to content

Richard Mackay

Members
  • Posts

    723
  • Joined

  • Last visited

  • Days Won

    2

Everything posted by Richard Mackay

  1. I presume you have measured the incoming voltage and the inverter tallies with this reading? Check the voltage of your neighbours (near and far) in the same LS zone as you...
  2. If you get 3 years life from 'deep cycle' lead acid batteries in a UPS application then your'e doing ok!
  3. Yes. The infrastructure for the supply includes more than the transformer. There might also be a limit on the maximum capacity of the supply. Get hold of them and ask what the options are..
  4. Thanks! I had a closer look at the MC4 connector. The actual socket (that you crimp) doesn't have a strain relief portion for the insulation of the cable (like the automotive connectors do). The strain relief mechanism is built into the plastic housing. So to complete the installation properly you need to screw the strain relief collar at the end of the connector to secure the cable. The strain relief connectors that I have have a large diameter so I doubt if it will clamp cables with smaller diameters. If the strain relief isn't tightened then all strain on the cable is borne by the crimped socket so this doesn't bode well for maintaining a good connection.
  5. Please post a pic of this crimper..
  6. Nuclear power is falling by the wayside. This is the way the market is moving despite every Tom, Dick & Harry having their own opinion on the matter! I posted this article on the discovery of solar PV (in Solar PV). Their comment on nuclear power is: It is a striking contrast to the history of nuclear power. Introduced in 1954, like the solar battery, civilian nuclear-power plants were seen as hugely promising. But since the 1970s nuclear experience has grown only slowly, and prices have risen rather than fallen. Of the many reasons for this, one is the benefit brought by extended small-scale experimentation. Energy technologies cannot be magicked into being fully formed, as was attempted in the case of nuclear; they need an adolescence. Jenny Chase of Bloombergnef, a data provider, says that in the company’s “economic transition” scenario solar starts to deliver more kilowatt-hours than nuclear by 2031. In practice she expects it to pull ahead sooner.
  7. https://www.economist.com/technology-quarterly/2021/01/07/how-governments-spurred-the-rise-of-solar-power
  8. I have every crimper for all possible applications but I don't know which one to use for these connectors. My suggestion is to crimp the cable as best you can and then solder the wire to the connector as well. Soldering makes an excellent connection..
  9. This sounds to me that it's a daytime load. (the A/Cs run during the day when sunshine is normally available. If so then a PV inverter is a good option. Please provide more info on what your'e trying to achieve..
  10. Please provide a model no. or link to this power limiter. Tnx!
  11. It will depend on the UPS that you are using. Yes, the voltage of the Li-ion batteries is lower than the equivalent lead acid 12V battery. I wouldn't rely on the charging circuit of the UPS. Rather charge the Li-Ion batteries with its own charger. But rather do not use a 12V UPS. A better option are 24V or 48V UPSs..
  12. This guy has all the toys! But it's great to see what's available..
  13. I missed this build.. (the title wasn't that accurate..) This is on my list of 'things to do...' Not to compare but I stumbled on this DavidPoz video:
  14. Did you 'grow' your system to what you have now or was it planned up front? Please provide the essential specs of your system. Tnx!
  15. DC pumps are also an option.. Have a look at this thread: https://www.4x4community.co.za/forum/showthread.php/333865-Solar-borehole-pump
  16. Post this saga on social media (HelloPeter) just to put them under more pressure.. Your bad experience should stop others from making the same mistake. Mustek is an IT (computer) company who obviously think RE will be a good investment but they should stick to computers IMHO!
  17. It looks like the inverter manufacturers have all installed a WiFi/Bluetooth link to their inverters. That's fine. What it probably also means is that they don't have to install a display on the inverter (and shave a $ off the price) Having a brief look at this inverter on the Goodwe site I see it doesn't have any text/graphical display. So for you to interrogate a trip you'll need to connect via one of the (web) apps.. Any Goodwe users out there who have done this already??
  18. Just to update you on this industry my connection in California sent me this recently: 'The small wind industry has collapsed leaving us with no high voltage controllers' (He uses these in his hydro systems..)
  19. Once you are connected to the inverter there should be indication of it's status: running/tripped/etc. There should be a report of the last trip..
  20. Your off grid inverter must have the batteries connected to it. Why don't these get charged from the PV panels?
  21. I reckon these builds sort the serious enthusiasts from the ouks bragging about how big their systems are.. ('my system's bigger than yours..') The only thing I'm still trying to get my head around is how to maintain the individual cells (or the banks). How do you know their capacity has dropped or cells have died..?
×
×
  • Create New...