Tariq

@James1 , agree with you there, I am also an installer and run my own house on a 5 kW, wife has learnt how to keep grid to essentially zero ( trickle feed ) and except for geyser and oven on non essential, whole house is on essential, hardly an ac overload trip, but, yes, for clients, who don't to to bother managing loads, i try to steer them away from the 5 kW, if at all possible. My markup and labor is the same for a 5kw or 8 kw, so only difference is price of the 2

My monthly consumption is approximately 500 kWh's, in summer I buy about 25-30 KWh's per month and winter about 100 kWh's 

My monthly consumption is approximately 500 kWh's, in summer I buy about 25-30 KWh's per month and winter about 100 kWh's 

My monthly consumption is approximately 500 kWh's, in summer I buy about 25-30 KWh's per month and winter about 100 kWh's 

@BarendD, are you located in Cape Town, if so, you don't have to do a line drawing, it is part of the online application, if not, you can use a drawing provided by CoCT.
I have always pointed the arrow on the CT towards the inverter in my installations and reversed the wires at the inverter if the CT is showing negative.

I run an 18000 BTU inverter aircon on a 5 kW Sunsynk, with no issues at all. with 15 kWh's of battery charged by solar panels, run it practically all night.

6 is commonly found out there, but 4 mm2 is fine also

If the batteries are not allowed to drop to the 30%, they seem to develop a resistance to charging up to 99/100%, try discharging the batteries to around 30% a few times, it should help.

The inverters have been powered up and a few load tests done. The three phase seem to work well. The setting up of master, slave, dip switches, CT coils and phase rotation can play games with you but once right it seem to work pretty well. I have no solar pv connected yet, will start conecting the strings soon, just waiting for some roof work to be completed. I'm excited to see the pv side when connected.

I have installed a 5 kWh battery on a 12 kW 3 phase inverter and have no problems ( loads are light, within battery specs ), so agree with @Scorp007

@Glenn, I am an installer in Cape Town, my main supplier has an authorized Deye repair center ( also in Cape Town ), send me a personal message with your details and a picture of the sticker/ serial number on the right side of the inverter, let me see what I can do to help
Tariq Tariq Solar installations Pty Ltd
079-289-7355

@Glenn, I am an installer in Cape Town, my main supplier has an authorized Deye repair center ( also in Cape Town ), send me a personal message with your details and a picture of the sticker/ serial number on the right side of the inverter, let me see what I can do to help
Tariq Tariq Solar installations Pty Ltd
079-289-7355

@Scubadude, i have my geysers, washing machine, tumble dryer, dish washer, pool pump on non essentials ( between ct clamp and inverter ) and all works well, my total load so far this month is about 400 kWh and bought from grid is 20 kWh, this is with the Limit To Load NOT ticked, that is 95% self consumption.
Think we should leave it as the difference between Deye and Sunsynk and I don't profess to know anything about Deye

@Sc00bs, I also only have 4.8 kWh of batteries and agree that it would take a very long time to recoup the cost of another 4.8 kWh battery, so spent money on some more panels and now running aircons during the day with no worries 

Had the same problem at a clients house, faint glow from the LED lights during load shedding, found out that the neutral-earth relay wasn't working, voltage between neutral-earth was 111 volts, sorted out the relay issue and all was good.

@MongooseMan is correct, I had applied at the beginning of May and it literally took under 10 days for the approval to install, and the same for the commissioning letter, just read thru to the application process and I or @MongooseMan will be able to help you, if you are going thru an installer, then he can fill out most of the form, if DIY ( like myself ), then I can help you thru the application process

@Scubadude, looks like you have joined the ranks of the Powerforum experts, great explanation above👋👋

Based on how I did my Sunsynk:-
1) You don’t need the first Changeover switch, as the grid connection is a T off the main grid wires going to the non-essential circuits and you have a double pole mcb to isolate the inverter, you do need the second changeover switch, to power the essential circuits, in case of a problem with the inverter 
2) Don’t believe you need the 25 amp mcb’s before the spd’s 
3) As the Sunsynk is capable of 35 amp pass through, better to use 35 amp mcb’ and 6 mm2 wire
4) Please correct me if I am wrong, don’t think you need spd’s on the load side.
 

2400 watts of pv power is not going to be enough, I have 4260 watts of solar panels, my geyser is 200 litre fitted with a 2 kW element ( heat it to 70 degrees once a day with pv ONLY ), it takes an average of 5 hours to heat the geyser to 70 degrees, as it is winter, i just barely get my batteries charged to 100 % ( use batteries during the night , to cut down on return on investment )

@YellowTapemeasure, I got to about 422 volts this winter with nine panels, so another panel would have put it up to 470 volts, might never have crossed the danger line and blown the mppt, but as I said earlier,was not worth taking a chance for another 250 to 300 watts of pv

My 6X540 watt string faces NW and it will consistently produce 2.6 kWh plus

Yes,it will 

First I connected the geyser to AUX, in the morning when both conditions were met, soc and pv, the system would switch on, then if AUX switched off due to pv or soc dropping below the limits, so far so good, but then if the limits were re established, AUX will not switch on again for the day. Thinking the geyser not coming on for the second time on the same day was due to the thermostat, so I connected AUX to the pool pump and it would not worked as designed and could not get any clear answers from Keith Sunsynk.
 

Congratulations, welcome to the solar community and may you have many fruitful solaring days😁😁

Do you have communication between batteries and inverter, meaning a CAN cable