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Gnome

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Gnome last won the day on February 3

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  1. I hope you aren't paying for these repairs. It is obvious the previous tenant messed up the DB. You aren't allowed to rent out a house that isn't complaint so the landlord has no choice but to fix it. Whether or not the landlord wishes to claim from the previous tenant is his choice. Also, I know you had an electrician over but I assume you have a double poll breaker for the main switch now? (not just the earth leakage) It is a legal requirement that single phase installations should be isolated with a double poll breaker.
  2. Haha no problem, maybe I came across a bit in your face. I don't own one but I also suspect it maybe obvious to you with all the context in your head right now but someone who hadn't seen it in a while may be like ???
  3. I guess what I'm trying to say is. Connected something like the Pylon battery to an Axpert King with it set to PYL. Then capture what communication is happening between the BMS and the Inverter. Then simply do the same thing as they are doing with your own battery parameters. Forget about help from Voltronic or a modified firmware. If you want it working, then you'll need to basically clone the Pylon hardware communication protocol as they do it. That way if Voltronic does something that updates their firmware, you are support because Pylon is supported.
  4. No idea what you are talking about... Pro-tip: Link to the subject at hand so others can become informed
  5. Can confirm, just checked with an engineer, they 100% don't share cable trays with AC power in buildings. Non power wires run in isolated conduits.
  6. For trunking I don't think there is a difference because the same risk exists. But I could have sworn they run cables from both power and other systems (ie Air Conditioning systems logic cables) in a cable tray. But I'll confirm. I can't see anything explicitly in the regs other than, keep your AC electrical wire away from your non-AC electrical stuff. I expect the answer is going to be no mixing in a cable tray or you need to put it in a conduit or something. But TBD.
  7. Let me just rant a bit here. Because a lot of the guys who CAN issues CoCs shouldn't. Or they issue it for things that are outside their wheel house. My partner works in the building industry as a professional engineer for the HVAC and wet services side. Granted electrical isn't the area she signs for, but the problem is wide. As an engineer you design a system and the installer that issues the CoC should follow the instructions to the T. Engineers are designers and installers are doers. Whenever the installer deviates you are screwing a system that was built using very specialized
  8. EDIT: Sorry I see you didn't say it requires metal. You were responding with the only sections you think mention metal. Kept my response below for posterity, because I frankly don't see any evidence of "DC requires metal pipes" story Do you have an older version of the standards? Your numbers are not the same as SANS 10142-1:2017 Edition 2 Secondly: What does a DC install have to do with lightning protection? Bonding is about bonding your water pipes and gutters, what does that have to do with DC? Same for surge protection, it has nothing to do with DC. --- You
  9. SANS 10142-1:2017 Edition 2: Wiring of premises isn't a suggestion book. It lists the rules and requirements for a domestic install. There are no "hey do what you want but we recommend". Pretty much each section lays out a number of rules related to a specific topic. They even go further to say you shouldn't put AC from one power source in the same conduit as another AC power source (ie. you can't run you inverter AC wire in the same conduit as your Eskom AC). But the DC requirement is pretty obvious unless you don't know what you are doing. Almost everything in SANS 10142-1:2017
  10. I mean reducing variables here; when using a competitor's Lithium battery product, do you see the same problem? I would start by reverse engineering their protocol and then simply emulating that protocol. That way it should work as it does for them?
  11. For the King model, yes. The Axpert King was built by Voltronic, the company that makes them, to serve in situations where you want 0 transfer time. So in other words, there isn't any dip in power when you switch from "utility/solar/battery". They way they do this is by running the inverter permanently from the DC bus. Meaning they convert input power to high voltage DC, whether that input comes from AC, solar or battery. Then once that is high voltage DC it is converted to AC. This arrangement is called double conversion in the UPS world. For sensitive electronics this is th
  12. Yeah, I'm using mine only as a UPS, not panels. If you are going UPS only, I think lead acid makes sense. Since I have no experience dealing with panels, I can't answer for you what is best suited there. But lead acid doesn't deal well with being discharged for long periods. So I think there lithium is definitely the better option when you are thinking of going off-grid or partially off-grid. The financial input for a system with and without panels are completely different. You can do a UPS backup that allows 2-4 load sheddings a day for relatively low cost compared to what you need
  13. If you guys are going for load shedding backup, lead acid batteries are totally fine since you are only doing 2 hours at a time. I've been running for roughly 3 years now on my current set of lead acids and they are still going well. It is roughly R10k to replace them which I budgeted to replace every 3-4 years. The fact that lithium batteries are more complicated to install with the Axpert, more expensive and also age, I don't think it makes sense. My 2 cents.
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