Speedster

There's no issue with this. In fact it's the reason why there are two independant MPPTs

And done ... all working just fine ! 🙂 

Deye is able to signal islanding mode to a contactor/relay which is used to create the e/n bond

I stumbled upon this recently and found it pretty interesting reading regarding longevity and efficiency of different lithium chemistries. 
https://iopscience.iop.org/article/10.1149/1945-7111/abae37

I stumbled upon this recently and found it pretty interesting reading regarding longevity and efficiency of different lithium chemistries. 
https://iopscience.iop.org/article/10.1149/1945-7111/abae37

Have you considered renusol CS+? Alternatively you can put down cement blocks on to which you mount something like their trisole system

most people use a 10 amp relay

Are those multiple earths bonded together in some way?

I saw a video where Keith Gough expressly noted the requirement of a circuit breaker before the inverter as they were receiving repair units where some of the internal components had welded together.

You're missing the point. If you only plan to heat water then yes, solar geyser is the way to go. If you want to do any form of solar PV then it's better to ditch the solar geyser and spend the money on more panels. This way you use that money to heat water AND reduce your other electricity costs. 

You're missing the point. If you only plan to heat water then yes, solar geyser is the way to go. If you want to do any form of solar PV then it's better to ditch the solar geyser and spend the money on more panels. This way you use that money to heat water AND reduce your other electricity costs. 

You're missing the point. If you only plan to heat water then yes, solar geyser is the way to go. If you want to do any form of solar PV then it's better to ditch the solar geyser and spend the money on more panels. This way you use that money to heat water AND reduce your other electricity costs. 

Because the installation is not done correctly and also not compliant.

Interesting post, thank you. Indeed, heating hot water consumes much energy. I have a question though:
In my own research, I have encountered many people who have done the solar geyser thing. Many of them also installed electrical solar energy 1 to 3 years later. In all cases, they were very happy with their solar water heating at the time, but wanted more control over their utility bill. They all remarked, after the electrical solar install, that they wish that they had gone for solar electricity from the start. Much of this was because they now had to now find ways to get around the footprint of the tubes on the roof, whilst others stated that they felt that had they gone for solar electricity first, they would not have bothered with the solar water heating tubes. Some (albeit a few) actually felt that the tubes were a waste of money. What do you say to this?      

I must have read a different report. The one I saw the Pylons were outperforming the other brands. 

Apologies if I missed it earlier on in the thread, do we have a graph showing cycle life based on dod for the Hubbles?

To be fair, I should add that there is a very good chance that the BMS itself was the problem and that the cells really were OK. But my point is that unless you have some calibrated, independent way of measuring battery performance instead of taking the BMS's word for the state of the batteries, who knows what condition those batteries are really in?

Nothing to do with the solar business really, but businesses also like to play games with the meanings of words. I used to work for a private healthcare company. One evening I come home and there on the drive time business news is the CEO of a very large medical aid having an argument with the minister of health. They are differing over the meaning of the word "cash" (medical aids are required to maintain a certain cash reserve so as to protect their members in case the fund collapses). The MOH said something like "'cash' means money in the bank." The CEO says "oh well, if you want to define it that way..." The MOH says "how else do you expect me to define it? You have shown me proof of an arrangement you have made, but it's an insurance policy from a company you own 100% of, how is that cash?". 

So I had a good laugh.

Then a week or so later I come home and, on the same program, my CEO is getting a grilling from the same very large medical aid. This time it's about "discounts". And at one point he says "I see now what the problem is. You want us to disclose discounts to us, and we do. But what you have just described is not something WE call a 'discount'. No. We call that a 'rebate', and so we don't have to disclose it."
 

Morning everyone, 
How about a nice manufacturer warranty vs roi comparison, warranty's will be as published by the manufacturer, this will be on cell cycles only, so monetary values can be established per unit stored over the period of the warranty.  Focus will be 5kw units. 10 year warranty on the paintjob isn't really a factor worth considering imo, hence cells only.
I'll use this as a placeholder as I get the info together.
I'll also put some cell testing procedures i have on hand in, its actually quite interesting but please note not every cell manufacturer does this, or makes the data available.
its worth also noting different cells have different performance graphs at lower temps, I'll put in 2 examples for comparison.
warranty info presented will include diy or authorized installer installation required, and any other installation nuances as may be required to uphold the warranty.

I went off this graph?
https://www.hubblelithium.co.za/uploads/1/3/5/0/135079623/am-2_discharge_graph_and_dod.pdf

I may have missed it, but it doesn't look like that warranty warranties much? It says it'll last 10 years or 3000 cycles, but gives no mimimum performance over that time whereas previously it warrantied at least 50% capacity.
Also interesting that the BMS only has a 2 year warranty.

A geezer is an old man.
A geyser is a South African term for a hot water storage tank. 
Anyway, the installer should be able to connect the geyser directly to mains (i.e. completely bypassing the inverter). 

I just had a look at my Pylontech warranty again and it doesn't actually say anything about cycle count numbers, only that he Minimum Capacity/remaining capacity would be not less than 60% of the Nominal Capacity at the end of Warranty Period (10 years).

A geezer is an old man.
A geyser is a South African term for a hot water storage tank. 
Anyway, the installer should be able to connect the geyser directly to mains (i.e. completely bypassing the inverter). 

A geezer is an old man.
A geyser is a South African term for a hot water storage tank. 
Anyway, the installer should be able to connect the geyser directly to mains (i.e. completely bypassing the inverter). 

A geezer is an old man.
A geyser is a South African term for a hot water storage tank. 
Anyway, the installer should be able to connect the geyser directly to mains (i.e. completely bypassing the inverter).