Jaws

Im not one for airing my dirty laundry in public- But I feel its my civil duty to let others know that if you do buy a Goodwe you will be left with no support - other than someone in China emailing you every second day with new questions, or a new firmware revision or a copy of the T&C.
With  Sunsynk and Dye  on the market you will have to be crazy to even consider a Goodwe but  maybe at some stage retailers will try and get rid of old stock at reduced pricing - DONT do it - shoud the unit fail you can basically scrap it .
After a month of trying my upmost best to get my inverter sorted I realised I'm just wasting my time and effort and its time to cut my losses, the  frustration and disappointment is not worth it.   I just bought a brand new Dye .   R20k that could have been used for something else. 
I really feel guilty and responsible as I recommended Goodwe to a number of my friends and family who went with Goodwe two years ago. Lets hope and pray theirs hold up a bit longer.
If required Im more than willing to post my email trail here with the support in China. Locally I spoke to some lady in Cape Town who promised that my tickets gets escalated every week. Seems like there is only a single person I think Andre who must give the go  ahead before I can hand the inverter at Segen Solar ( online retailer is not interested to assist). But seems like he is very busy ( or too busy to assist a once off customer - maybe installers and retailers gets preference.   Its pretty sad because I think its a quality product but without any real support should you have a hardware failure its basically a piece of expense aluminum. 
 
 

My website will send you all the required passwords once the courier delivers.
I have noticed that most people ignore these emails. Should have mentioned it over here.
Thank you so much for the 3D Print design files

https://cad.onshape.com/documents/103030e2eca3ada69e400db3/w/586a90b4aaa4edff7b31a60d/e/68c1384c802ba5f205098b56
For those that want to 3D print a box
Pretty simple, with holes for small cable ties to keep the cables secured 
 
 

Have a look at the online store, there are a couple of high resolution images that will tell you what you want to know. 
smarthomeintegrations(dot)co(dot)za
 
The ESP32 Microcontroller USB port always needs to face the same direction as the power port marked with red and black (input 5V-16V DC)
RS485 (Orange left & Orange/White to the right)   or   brown/white left and brown right  (assuming you crimped T568B)
 

Please can I call dibs on one
Firm as well 

Earth Leakage with Overload Protection is regarded as an MCB(Green and White lever type) No need for a additional MCB if one uses that type of E/L.
I use an E/L before and after my inverter. Haven't had nuisance trips accept when my toaster acted up.

Again the failure to discharge may be due to settings. I'm thinking of the SOC protection settings. These are in place so that you can control how deeply the battery is discharged. On my system I have the following
Depth of discharge (on grid mode) = 65% Depth of discharge (backup mode) = 90% It's important to understand that DOD is inverse to SOC. If SOC is 40%, then you have used 60% of your battery and so 60% is your DOD.

So in my case the battery will discharge to 65% DOD (35% SOC) if there is grid, and to 90% DOC (10% SOC) if there is no grid. The way that I have it set means that in the event of a sudden outage, I will always have 35% of the battery left.

One implication of these settings is that the system can be run so that you will always have 100% of battery available in the case of a power outage. If you system is set like that then it will never discharge the batteries whilst there is grid power available.

So please check the following,

1) What mode is the inverter running in? There are four of them. The most commonly used is "general". (the operation mode is the 2nd page of the basic settings in the app)
2) Is the SOC protection turned on, and if so then what are the settings for on grid and back up modes? (this is in advanced settings, scroll down to SOC protection)

Is this a light on the input side or the grid led on the inverter?
If the LED, it means the inverter is not happy with the frequency/voltage of the grid. What is the pv master app reporting here?
This could be as simple as 1 of 2 things.
1. You need to set your inverter to the correct country, eg. South Africa
2. If on older firmware, South Africa setting was bad and you had to use custom. If you update to the latest firmware then this is fixed when using South Africa. Since your original post you mentioned they wanted you to do a firmware upgrade, I recommend you do this. If you don't run the latest firmware, I don't see why Goodwe would agree to you dropping of the inverter at Segen. You absolutely must test the latest firmware first.
 
Seeing as you have solar, your installer probably put your inverter into General mode. So not charging from the grid is 100% expected. This inverter will only charge from the grid if set to Backup mode or Eco Charge mode. While I am using backup mode myself, the correct way probably is to use eco charge, bit more complex to set up.
 
Not sure what you mean here. So the battery is not used for providing backup power when there is loadshedding? If this is the case, its another setting not done correctly on your inverter. In pv master, in advanced settings, there is a setting "Backup supply" which MUST be turned on, if you want the inverter to supply power during power outages.

Who is your installer? Sounds like the installer didn't configure your inverter correctly. You can do this if you want using pv master. Are you willing to try? I wonder if goodwe themselves even looked at the settings, they can see it remotely if your inverter is connected but they will probably leave it up to the installer to configure.
I am lucky, my installer is a huge fan of goodwe and use the same inverter at his house, so he knew exactly how to configure mine and I suspect that is why mine works flawless.
 

Im not one for airing my dirty laundry in public- But I feel its my civil duty to let others know that if you do buy a Goodwe you will be left with no support - other than someone in China emailing you every second day with new questions, or a new firmware revision or a copy of the T&C.
With  Sunsynk and Dye  on the market you will have to be crazy to even consider a Goodwe but  maybe at some stage retailers will try and get rid of old stock at reduced pricing - DONT do it - shoud the unit fail you can basically scrap it .
After a month of trying my upmost best to get my inverter sorted I realised I'm just wasting my time and effort and its time to cut my losses, the  frustration and disappointment is not worth it.   I just bought a brand new Dye .   R20k that could have been used for something else. 
I really feel guilty and responsible as I recommended Goodwe to a number of my friends and family who went with Goodwe two years ago. Lets hope and pray theirs hold up a bit longer.
If required Im more than willing to post my email trail here with the support in China. Locally I spoke to some lady in Cape Town who promised that my tickets gets escalated every week. Seems like there is only a single person I think Andre who must give the go  ahead before I can hand the inverter at Segen Solar ( online retailer is not interested to assist). But seems like he is very busy ( or too busy to assist a once off customer - maybe installers and retailers gets preference.   Its pretty sad because I think its a quality product but without any real support should you have a hardware failure its basically a piece of expense aluminum. 
 
 

He is wrong. Single core GP wire like that can only be used within a wire way.  That means conduit or truncking or racking.  An open space in a ceiling is NOT a wireway.
 
 

Australia removes much-criticized DC isolator mandate – pv magazine International (pv-magazine.com)

Australia removes much-criticized DC isolator mandate – pv magazine International (pv-magazine.com)

Quality DC breakers and Isolators are very expensive .  Your issue is probably not the fuses but the DC breaker.

Quality DC breakers and Isolators are very expensive .  Your issue is probably not the fuses but the DC breaker.

Side note to your side note.
V=I x R
When referring to losses the typical formula use is P = V x I   , replace the V  with I x R      then you get  P = (I x R ) x I 
P = I2 R
The  energy is lost in the form of heat due to the resistance of that cable and current flowing trough it.  The formula P = V x I for losses does not make that relationship evident.  Whereas with P = I2 x R , you can clearly see for an increase in resistance there is an increase in Power losses, but even worse in the increase in current where the relationship is a square.
That's why a 48 V system is way more efficient than a 24 V system . Although current of a 48 V is only 1/2 of  the current of comparable 24 V system , the losses across the cables is 1/4 less. 
__________
 
As for the OP , in a single inverter , single battery bank system the difference in length between the positive and negative cable are irrelevant as is a simple series circuit and Kirschoff`s  2nd Law applies.
 
Obviously when a parallel inverter or parallel battery bank is connected this does not hold true anymore. 

Side note to your side note.
V=I x R
When referring to losses the typical formula use is P = V x I   , replace the V  with I x R      then you get  P = (I x R ) x I 
P = I2 R
The  energy is lost in the form of heat due to the resistance of that cable and current flowing trough it.  The formula P = V x I for losses does not make that relationship evident.  Whereas with P = I2 x R , you can clearly see for an increase in resistance there is an increase in Power losses, but even worse in the increase in current where the relationship is a square.
That's why a 48 V system is way more efficient than a 24 V system . Although current of a 48 V is only 1/2 of  the current of comparable 24 V system , the losses across the cables is 1/4 less. 
__________
 
As for the OP , in a single inverter , single battery bank system the difference in length between the positive and negative cable are irrelevant as is a simple series circuit and Kirschoff`s  2nd Law applies.
 
Obviously when a parallel inverter or parallel battery bank is connected this does not hold true anymore. 

Where will the joint be located ?
Inside the conduit pipe?
Get the correct sizes ferrules and a crimping tool.  You can use heat shrink with insulation tape . To seal it all up

Where will the joint be located ?
Inside the conduit pipe?
Get the correct sizes ferrules and a crimping tool.  You can use heat shrink with insulation tape . To seal it all up

Losing a neutral can cause such weirdness. As one example.
Let's start with this almost counter-intuitive statement: In a three-phase star aka wye setup that is perfectly balanced, there is no current on the neutral cable. The neutral cable only carries the difference in current between the phases.

If you loaded up the three phases equally, you could literally disconnect the neutral and nothing would happen to the other voltages.
Now imagine you lost the neutral, and lets just consider two of the phases, eg:

Your house is connected where I put the question marks, across one half of a long transformer winding that forms a voltage divider. Now, again, if the loads on phases A and B are exactly equal, the impedances are the same, and as a voltage divider the voltages are the same. But if one phase is loaded higher than the other (has a lower impedance) it gets a lower voltage.
The other phase gets the remainder of the 400V (ish), so in this scenario, you have 130V while the other guys had 270V.
Roughly every third house in the street is on the same phase, so one way this would play out is that every third house has 130V, every neighbour to that house has 270V, and the remaining guys have no power...
🙂
Low voltages like this are the ones that damage induction motors (such as the compressor in your refrigerator). That's because current still flows through the windings, making it hot, but there is not enough torque to actually get it going...

TO be fair I think Axpert installs far outnumbers Victron installs in RSA, so one would then also expect I higher number of failures. Also people only ever come to this forum for assistance after a failure, so we hardly ever hear from the people that are happy with their Axpert installs.

An Earth leakage trips if either the live conductor comes into contact with  Earth OR if the Neutral conductor comes into contact with earth
If the faulty timer somehow switches neutral to earth tripping all the circuit breakers in your DB will not resolve the issue. You will have to remove the neutral wires from the neutral bar one by one until you are able to reset the Earth Leakage device.
 
But trip all the feeding CB`s first, a floating neutral from a live circuit can shock you.
 
 

An Earth leakage trips if either the live conductor comes into contact with  Earth OR if the Neutral conductor comes into contact with earth
If the faulty timer somehow switches neutral to earth tripping all the circuit breakers in your DB will not resolve the issue. You will have to remove the neutral wires from the neutral bar one by one until you are able to reset the Earth Leakage device.
 
But trip all the feeding CB`s first, a floating neutral from a live circuit can shock you.