Hi guys,

I wish to install a sunsynk 5kw hybrid inverter with 20 kwh of battery storage. I want to run the full house loads in case of grid failure and do not want to segregate essential and non essential loads. The schematic in the manual specifically states to separate the essential and non essential  loads . I am confused on how to achieve this. Is there a way this is possible.  A wiring diagram will be of great help.

 

Thanks in advance.

 

 

You don't HAVE to separate essential and non-essential loads but on the 5kw its probably best to do so, this is because if there is no grid or solar (load shedding / fault) then you are limited to the 5kw load of the inverter - and this might be too little if you have geyser + oven + kettle on essentials. With an 8kw you have more headroom to play with before the inverter complains and trips

Separation of the essentials + non-essentials is done in the DB, either a new DB is installed that's only for the essentials or your electrician can select which items are essential in your main DB 

@Alpharomeo123 here is a basic diagram of my setup with a Sunsynk 5kw, I installed a completely new DB for the essential loads...

Edited July 26, 20224 yr by RhysMcW
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1 hour ago, mzezman said:

You don't HAVE to separate essential and non-essential loads but on the 5kw its probably best to do so, this is because if there is no grid or solar (load shedding / fault) then you are limited to the 5kw load of the inverter - and this might be too little if you have geyser + oven + kettle on essentials. With an 8kw you have more headroom to play with before the inverter complains and trips

Definitely. I have a 4.6 kw Goodwe, and even with a split DB it's possible to overload the backed up circuits. The kitchen is the danger area, even though we have a gas stove. Start the dishwasher, turn on the kettle, get the microwave going and you're skating close to the limit. A 5kw sunsynk (if it's genuine 5kw) would give us a little more headroom, but not much. 8kw would allow us to flatten the batteries much quicker, but would also mean that we don't have to count how many devices are on in the kitchen.