Tweet
Anyone have a full copy of this document? I have a copy of 2017 but not the latest version (2023)
-
-
Some interesting details that are going to create some or should I say more confusion and question a few COC's that have been issues with the incorrect number of pole circuit breakers to isolate the SSEG.
This is going to become the next grey area.
The question: If you have a 3 phase inverter with solar panels and batteries, do you fit 4 pole circuit breakers at the main DB, feeding the AC control box next to the inverter, a 4 pole main switch, a 4 pole breaker for the inverter input and a 4 pole circuit breaker for the inverter output? For the records a bypass switch in the AC control box has nothing to do with the ATS or islanding mode of the inverter it is purely a grid bypass switch.
I am still trying to understand how Dey and Sunsynk relay /contactors operate, there is a common busbar which has the grid, AUX and UPS connected, but how the grid drops and allows the unit to go into islanding mode, I am yet to find a schematic showing the internal components.
The same for a single phase, do you have to install double pole breakers in the main DB feeding the AC control, double pole main switch in the AC control, a double pole inverter breaker and a double inverter output breaker, it seems a bit excessive, but hey anything is possible.
Then once you have figured it out, does it apply to TN-S, TN-C, TN-C-S and all the other earthing arrangements?
Its the NRS 097-2-1: 2023, that I am looking for, now that we are starting the registration process for all our inverter installations, all these things have to be correct. -
there is all sorts of clutter on the internet,
Comment
-
I am starting to wonder if the reason they have not started fining or disconnecting people yet for not registering, could it be because the grid is still not stable enough to handle the load if all solar systems shutdown, we would go back to stage 6 load shedding ?
They hoping by March 2026 they can handle the load as they start disconnecting people who have not registered ?Comment
-
List of approved inverters, everyone is following the Cape so if they are approved in the cape they should be approved in your province.
Comment
-
The most requested question - What is an SSEG, do I need to register my SSEG.
I am just going through the process, step by step at my own pace, getting to understand how it all works and preparing for what is to come, some might say but it will never happen, I dont really care.
Why I am going thorough the preocess is more for me to make sure all my system installed are ready and more important, compliant to the standards required.
For example the double pole or 4 pole circuit breaker required in the main DB, I am yet to come across a system with a double or 4 pole breaker circuit breaker in the main DB, feeding the inverter input or Ac control panel/DB, bypass switches a dime a dozen, in the home made AC control/DB, which dont even fall in the scope of the registration, its not a changeover switch as many electricians think, its is merely an additional bypass switch that someone came up with in at the peak of load shedding, most of the AC controls dont even work, because they are not wired correctly and you still have to disconnect wires, making it pretty useless.Comment
-
I found this,
Page 41/42/43 is pretty much what most domestic installations would look like.
It is quite interesting, because it shows that if you do install a changeover/bypass switch, you need 2 circuit breakers feeding from the main DB, that would make 100% of all systems I have checked since 2022, when I started this solar journey, non complaint.
One feeding the inverter and another feeding the bypass switch. Tis are going to get interesting, or not.
Comment
-
Once we have a copy of the NRS 097- 2-1-2023 (the standard required by the municipality) and the latest SANS regs, it would be a good time to start clearing up all the myths surrounding solar installations, you would have thought by now an updated code including the solar test report, diagrams for SSEG connections would have ben released, yet there are stil grey areas that require urgent attention.
1/ Do you need a neutral earth bond and where should it be linked?
2/ The difference between lightning protection ( a specialist field, certainly not to be undertaken by a green card holder or a qualified electrician) bonding and earthing.
3/ Do you need to install an earth spike, and does the type earth arrangement like a TN-S system require and earth spike for solar, where should it be installed, type of cover to be used over the spike for easy access for testing, labeling, earth bar on the wall next to the earth spike, test results and all those kind of interesting topics.
4/ Who should be signing off solar projects and at what point should it be designed and installed by an engineer, from 16 kw and above or 12 kw and above?
5/ Should all SSEG's be registered will Nersa, Eskom or the local municipality?
6/ How many poles are required on a circuit breaker or isolator for the isolation of solar inverter, panels and batteries and where should they be located?
Just so many questions.Comment
Comment