Hi Slaki,
this is a smart solution. I have been trying to come up with a similar system to manage my 2 geysers, both 150l with Geyserwise PTC 2kW elements installed.
I am trying to ensure that I use any excess power from PV during the day, and no battery ever for the geysers, but also have grid backup for the geysers during overcast/rainy days and the morning showers when necessary. Using your base wiring, I am going to add two timers to the supply side of the geysers to ultimately control when each one can switch on and thus try to manage the load on my inverter 'smart load' port. Also I want to add the pool pump to this circuit so that it only ever uses excess solar power to run.
MY question is, on the 8kw Deye inverter, what is the max power you can use on the Smart Load output?
I could manage the geysers timers so that they are always out of sync and thus never switch on at the same time, so the max power it would draw would be 1 geyser and the pool pump = 2800W. But If I added the second geyser it would be 4800W.
I have 16 x 540W panels
Al.
