this post was submitted on 16 Jun 2025
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I watched the video and it seems to make good points, but no matter how many times I see something related to US power circuits it just feels so ... antique? I have 3x25A fuses on the house and several 3x16A outlets around so getting 11kW out is just a matter of plugging in a socket.
Obviously it would be a good thing to have controls so that water heater, floor heating or sauna stove aren't all on together but I think I've replaced a single 25A fuse over 10 years we've lived on this house and I'm pretty sure that was caused by a small(ish) surge on the grid and not our load.
What they do here for (a good amount of) home car chargers is read out the electricity meter using their serial port and dynamically adjust the charge current to never take more than those 3x25A.