Good Question. It doesn't. 99% of the time I am not drawing more than 5000w without the geyser. If I draw more than 5000 without the geyser the inverter will trip. The Sunsynk/Deye inverters does allow double the draw for something like 10s. My automation used to check if it is more than 5000...
This is how I'm dealing with this issue
alias: Switch off Geyser when Power usage too high
description: ""
mode: single
triggers:
- entity_id:
- sensor.supply_power
above: 5000
trigger: numeric_state
conditions: []
actions:
- data: {}
target:
entity_id...
That's the only negative of using Aux for geyser, your essential and aux load is shared through the inverter, it cannot supplement from grid, I use Home Assistant to switch off my geyser once the load goes over 5000W (I have a 5kW Inverter) "We" (meaning the wife) have managed to use more than...
I'm guessing you'll do something similar to this video. Keep in mind most solenoids use 24V AC (I see this is also on of the first comments in this video linked)
Not sure if you can power this sonoff with AC or 24V DC and then "passthrough" the 24V AC through each of the channels (I did this...