• artyom@piefed.social
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    2 months ago

    I mean, it makes sense to me that consumers can’t be pumping energy into the grid with no way to cut it off, but I’m not a lineman or some sort of civil engineer or whatever.

    But if I were a lawmaker, I’d be on the phone with the Germans, who have 1.2M of these connected, and figuring out if and how they’re doing it safely. But lawmakers seem to be somehow incapable of reaching out to people who know fuck all about anything.

    • user28282912@piefed.social
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      2 months ago

      It is more than just the concern around back-feeding the grid. These simple balcony setups connect to your home grid via a single outlet. Most US outlets/circuits are 15 AMP or roughly 1500 watts max capacity. These single circuits can only carry that much current total at any one time so if you have it loaded up with incoming power AND use anything else on the circuit at the same time … no bueno. To make this setup work best/safely you would ideally want a dedicated circuit for it which is basically non-existent today.

      The safety issues really do need to be addressed because the folks most likely to use these systems are apartment dwellers and I don’t think anyone wants to increase fire risk in these scenarios.

      • artyom@piefed.social
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        2 months ago

        Most US outlets/circuits are 15 AMP or roughly 1500 watts max capacity.

        That’s why they’re limited to 1200 watts.

        • BT_7274@lemmy.world
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          2 months ago

          His point was that if you’ve got 1200w incoming from the panel then you only have 300w of overhead on that circuit before the circuit breaker blows.

          Sure, it’s within the limit on its own, but without a dedicated circuit for it you’ll be blowing a fuse pretty frequently when trying to use nearby plugs and lights.

          • artyom@piefed.social
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            2 months ago

            As I said, that’s not how that works. You can have 10A incoming and 10A outgoing and the circuit load is still 10A.

            • BT_7274@lemmy.world
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              2 months ago

              Idk man. It’s probably over my head but I still don’t think the wires themselves could take it. In my thought process you’ve got more electricity flowing around on the circuit and even if it gets used before getting to the breaker things are going to be heating up pretty quick.

              To me it sounds like trying to hook up a power plant to a data center via an indoor extension cord. It’s gonna melt.

              • artyom@piefed.social
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                2 months ago

                I do know, man.

                even if it gets used before getting to the breaker

                It would be both added and consumed after the breaker. Like if you had a 10A solar system connected to a dual outlet, and a 10A space heater on the other outlet, there would only be 10A flowing through the outlet, and nowhere else in the system

                • BT_7274@lemmy.world
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                  2 months ago

                  Yes, I was conceding that point. I was then worried about the actual romex in the walls entirely contained after the breaker. Are you able to pump as much power as you want at 15A on a 15A rated wire? There’s got to be some limit, right?