diy solar

diy solar

Can you connect immersion heater to AC Out of grid-tie inverter (instead of mains)

pierreba

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Joined
Mar 16, 2022
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Hello,

I am looking to install a 10kw solar panel system on my roof feeding into my hybrid grid-tie inverter with grid export functionality. It seems trying to export to the grid with a 10kw system is pretty complicated as I need to get permissions and unlikely to be straightforward.

Instead, I am thinking to connect my 220V/AC immersion heater to the AC out terminal of the inverter (the terminal where you would normally connect to the mains for export). That way any surplus energy (surplus to load and battery charging) would channel into heating my water cylinder (if there is demand for heat).

Any technical issues you see in that? What happens if there is not enough surplus energy to turn on the immersion heater as I presume there is a fixed amount of current that is needed to go through the resistance load of the immersion heater under 220V ?


Thanks
Pierre
 
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