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| Grumpy rant #783 |
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| wraper:
The worst are protected Schuko sockets. UK plug have protected shutter driven by earth pin and that works very nicely. In Schuko sockets on other hand that is not possible to implement, so they rely on both prongs pushed into the holes simultaneously. It's not reliable at all and cheap sockets often are extremely difficult to plug in, especially after some wear happened. Extremely bad with unearthed plugs with thinner prongs which often even get bent while trying to plug in. More expensive sockets are more or less OK but mechanism still is a shitty workaround. I prefer buying extension cords with unprotected sockets when available. |
| wraper:
--- Quote from: SiliconWizard on October 05, 2023, 06:28:31 pm ---USB-C PD will keep being revised just like any other previous standards, so that if you made that part of home mains installations, that would become "obsolete" (at least in the sense of not being able to provide as much power as the more recent revisions, thus being unusable with some potential newer devices) over time anyway. --- End quote --- While it likely will be revised, current standard is good enough for most of things and is quite future proof if manufacturers do backwards capability properly. --- Quote ---OTOH again, anyone who wants USB-C PD ports in some wall sockets can install them for a relatively reasonable cost, then it is their decision and their responsibility. --- End quote --- If there is any socket that can supply 240W according to current standard, IMHO it should be capable charging anything in foreseeable future. |
| mansaxel:
--- Quote from: tom66 on October 05, 2023, 02:49:22 pm --- A decent plug is Schuko, but it has other issues like lack of polarisation in most cases. --- End quote --- The reader is reminded of the fact that we usually are conveying alternating current over these plugs, which means that polarisation is wrong 50 or 60 times per second. Hence, "polarisation" is for people who still think in DC. The only wise move is to regard the two pins as equally dangerous and untouchable. All other moves are loser moves. (Three-phase is another game, of course. But since the english-speaking world is afraid of it, because Edison, most people never get to have it. ) |
| themadhippy:
--- Quote ---The reader is reminded of the fact that we usually are conveying alternating current over these plugs, which means that polarisation is wrong 50 or 60 times per second. --- End quote --- so what if its changing 50 or 60 times a second,in most parts of the world one of those pins is carrying a nasty surprise to earth if you grab it,the other maybe a faint tickle so only being able to plug it in one way around becomes rather important in certain cases. |
| TimFox:
--- Quote from: mansaxel on October 05, 2023, 07:31:16 pm --- --- Quote from: tom66 on October 05, 2023, 02:49:22 pm --- A decent plug is Schuko, but it has other issues like lack of polarisation in most cases. --- End quote --- The reader is reminded of the fact that we usually are conveying alternating current over these plugs, which means that polarisation is wrong 50 or 60 times per second. Hence, "polarisation" is for people who still think in DC. The only wise move is to regard the two pins as equally dangerous and untouchable. All other moves are loser moves. (Three-phase is another game, of course. But since the english-speaking world is afraid of it, because Edison, most people never get to have it. ) --- End quote --- In this context, "polarization" refers to non-interchange of Line and Neutral power connections. In the US, the NEMA 5-15 series uses a wider flat blade for Neutral than the flat blade used for Line: this is a useful requirement, but I have seen badly-installed sockets where that was violated. (Of course, the "third prong" is ground or PE.) Three-phase AC is readily available in commercial and industrial locations in the US, an English-speaking country, but the utilities try not to install it in single-family residential neighborhoods (defined by municipal zoning ordinances). |
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