Tariq

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 

I have never set up voltage mode for any of my clients, always lithium bms, but some of them still get the F56 low voltage trip ( without grid ), when they go over the discharge limits set up on the inverter or if it is a one battery set up

@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

Sunsynk 8 kW should be rated at 22A per string, 450V max, so five in series on a string will be fine

@Marcodp , I am an installer in Cape Town, I can assist you and also put you in touch with an engineer who can do the Eskom registration, please message me or call me on 079-289-7355.

Voltex is selling the Sunsynk 5.32 kWk battery for R16,100 ( just bought one ), however you need the push connector cables

I hate winter, cold, rain, cloudy, etc, etc, etc🙂🙂

@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.