• Asetru@feddit.org
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    12 hours ago

    These units do not push electricity into the grid unless their fail-saves are bypassed deliberately or fail catastrophically.

    What are you talking about? Of course, energy that isn’t used in the household is pushed back to the grid.

    • Superb@lemmy.blahaj.zone
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      6 hours ago

      No, that’s not how it works in the general case. There are ways to setup a house to back power but it’s more complicated than just plugging it in.

      Without proper safeties in place back flowing power to the grid becomes extremely dangerous for line technicians

      • Anivia@feddit.org
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        29 minutes ago

        Maybe just look at how these inverters work before babbling about. These kits all come with standard off the shelf micro inverters, or rarely bigger string inverters, and will feed back up to 0,8wk into the grid if the energy is not used in the household. If the connection to the grid is lost they turn off within less than 50ms, making them completely safe for line technicians

      • eleitl@lemm.ee
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        8 minutes ago

        On loss of power these inverters cut off within 20 ms or so. These are grid-tied, not insular (though with hacked firmware some of the models can be made insular-capable).

    • drkt@scribe.disroot.org
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      12 hours ago

      Do you know how these kits work? The whole point is that they’re plug-and-play. If the feed back into the grid, they are not plug and play and will require coordination with your power company lest you accidentally kill someone because you’re backfeeding into a line they turned off so they could work on it.

      The kits have built-in measures to avoid backfeeding, or they would be illegal. Where I live, they’ve been deemed so unsafe, failsafe or not, that you’re just not allowed to use them.

      • Sleepkever@lemm.ee
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        46 minutes ago

        They cannot back feed when there is no grid power, yes. But they cannot differ between power used inside the house or outside the house. They can and will definitely push power back out to the grid as long as they detect grid power from other sources.

        • eleitl@lemm.ee
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          29 minutes ago

          If you happen to have an old Ferraris meter without a ratchet it can even run backwards when you produce more than you consume. And, of course the 800 Watt EU limit is a worst case limit. If you feed in on a dedicated (no other consumers or generators) line with its own fuse and sufficient wire crossection you can feed in up to about 2 kW. Be aware that the fuse will not trigger if you have a near-short while you generate peak or near peak which can cause overheating and is a fire hazard. While none of the above is legal and you will lose house insurance in case some electric-related fire event occurs it is safe technically.