alt Hacker News> Complex stuff that she doesn't know or understand about electricity and her property's wiring and whatever you might end up doing might end with her property burned down.
What wiring? Literally connect the setup to the regular power outlet, no fuzzing with wires or otherwise, probably any human who've connected some electrical gadget/device to a socket before could get these solar setups going in a couple of minutes.
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> What wiring?
If you've got normal residential power outlets, then you've got wiring inside the walls. Those wires are sized for the number of amps that the individual circuit's fuse or breaker allows, plus some limited safety margin.
Depending on hidden-in-the-wall details of how a circuit's wiring is run, and where you plug in panels and electrical loads, it might be quite easy to overload those wires - without blowing the fuse or tripping the breaker.
Overloaded wires can get very hot, and electrical fires starting inside walls really is a thing.
EDIT: Adding https://www.ul.com/insights/safety-considerations-plug-photo...
Can't there can be over-current issues if you are not using a dedicated wall outlet for backfeeding the solar?
Consider a situation where the plugged-in solar inverter is capable of providing 15 amps into the circuit, but so is the breaker feeding the circuit from the panel. If you plug in something that can consume 30 amps, it will be able to do so by pulling 15 amps from each source without tripping the breaker, so you can end up with 30 amps traveling in your building wiring that is only sized for 15.
At least that's how I understand it. I don't know if any of the grid-tied inverters that can plug into a wall have some way of detecting and compensating for this. Clearly other countries have been able to come to a decision to allow it. I vaguely remember someone explaining that the 230V systems in Europe somehow mitigate the issue but I don't remember how.