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Cake day: June 17th, 2023

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  • cynar@lemmy.worldtoEurope@feddit.orgUK Government will allow "Plug-In Solar" Panels
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    2 days ago

    The UK plug is one of the best around. It’s only downside is that it’s chunky. By putting the fuse in the plug, the protection can be customised to what is attached.

    It also is designed to be almost impossible to fall out of a wall socket. As well as mandating the pin connection order and safety shielding. The sockets are also gated, stopping children sticking stuff into them.

    Even internally they are well designed. The live wire is the weakest link. If pulled, that will tend to fail first. It will, however be held internally by the neutral and earth wires. The earth will be the last to fail.

    The side entry also means that the plug locks into place when the cable is pulled. If the plug or socket fails catastrophically, the earth pin will be the last to pull loose.




  • I had a chat about this with a friend who works for the national grid (UK).

    Apparently the problem is keeping the grid balanced and stable. Basically, the grid struggles to react fast, so they plan ahead. Things like large scale solar can provide predictions on output. Home solar can’t.

    When clouds pass over an area it can cause slumps and surges in the local grid. The more home solar, the worse it gets. The current grid is designed to work top down, with predictable changes in demand. It needs upgrading to deal with large scale bidirectional flows.

    The plug in units are (potentially) even more ropey. If used properly, they are no worse than normal home solar. Unfortunately, being cheaper, there are worries over the microinverters not shutting down. Either due to the manufacturer cheaping out, or turning on an “off grid” mode.

    There are also worries about overloading household circuits. Back feeding bypasses the household circuit breakers and RCDs. They could overload wall wiring and cause fires, or stop an RCD tripping, allowing for a person to be shocked.

    I don’t know how much this would apply to the American Grid, but I would imagine it would be worse. Your grid is older and larger. You also use 120VAC which makes the current overload issue a lot worse.







  • I lost a good friend a similar way. He insisted there was a global conspiracy to suppress “free energy” (over unity generators), among other things.

    My background allowed me to personally prove some of his arguments wrong from almost first principles. He then accused me of personally being part of the conspiracy. At that point I concluded he was a lost cause and parted ways.

    Most of his “evidence” was in YouTube videos. I went through a couple. It mostly had the build-up, explanation, consequences, and conclusions. It missed any actual evidence. It’s amazing how someone can fill 2 hours with nothing of substance.






  • The problem with applying that part of game theory here is it makes several assumptions.

    The biggest is that the bigger party are playing for maximisation, rather than just to “win”. That is very much not the game with trump.

    The second is the assumption that there is only 1 game in play at a time. America could cause devastating economic damage, if it went full tantrum. Europe has noticed how vulnerable they are to that sort of action. They need to patch the holes before playing hardball.

    Under these assumptions, taking fairly meaningless hits to buy time makes sense. Pull the wolf’s teeth, before challenging it to bite you.