Oh China You never cease to surprise us with your complete lack of understanding of what you're making and in particular, other countries electrical standards tick. For instance, this being a cap to small Edison screw lamp adapter, you do run points for the fact you can't touch the metalwork down here, but that's all the point you're getting because in the UK as opposed to the American and other country Edison screw lamp holders in UK and India and other countries, we have the bayonet cap lamp holder. This has a metal surround with two pins in the end and the two pins then should not in any way be connected to this metal. This metal should be fairly isolated to the point that when you put it into certain grounded metal fixtures like chandeliers, then this metalwork here will actually be grounded.

Now this is where things go wrong. Let me unplug this lamp holder before I Go any further because it turns out this lamp holder and that one that there's a bit of electrical issue because if I go onto the outer casing and I touch the contacts, this one has a direct electrical connection to the automatic casing. And that is unfortunate because in a traditional plastic lamp holder when you put it in that does stick out and is touchable and because it's not polarized now in particular way depending on which way you put it in that will either be connected to neutral and be effectively at zero volts with reference to ground or it will be at 240 volts with reference ground which could get quite spicy if you're trying to unplug a lamp. No, Why has this happened? Well, it turns out that they've used a very simple system that is well in their eyes compatible with Edison screw and Bennett cap.

It has this Arrangement where if it was Edison Screw As one wire at the back that goes to the back pin and then the side of the lamp housing with this metal tab connects onto the metal housing of the Edison screw lamp holder. But unfortunately if they use the same thing with the beanet cap lamp holder, but they've added an extra wire onto that and they've put it in. but they've crimped again with that little contact. The little brass contact here crimped against the side of the housing.

so by default, the housing will always be referenced to one of these pins. Now, to be fair, occasionally you get a British lamp. this one came from Asda It's clearly marked Earth fault because it I was demonstrating how bright this new Asda lamp was to my brother when it tripped all the power out to the house because it tripped the Rcd and this one does well. Let me demonstrate, this one does have an electrical connection to the pins.

If I do this. Nope, it's not that direction so it's clearly through the wrecked far so it's on the circuit board. The circuit board is making contact with a case at some point. This does trip the circuit breaker foreign and when you actually put one of these lamp holders one of these faulty fixtures in and they're all like this as far as I can see when you put it into a standard Bennett cap lamp holder, if it's the conventional plastic one like this, all that will happen is that metal will either be live or at neutral, but if you put it into the metal chandelier, it will either connect neutral to Earth which is a bit of a random thing with Rcds or Gfcis.

It means that above a certain load you'll get tripping problems or it will do live to Earth which will instantly result in the power tripping. usually the Rcd trips first or the GFCI Uh, so that's quite a novel thing. So a big round of applause to eBay and Amazon and other sort of online sellers for facilitating the importing of stuff that does not in any way get tested for compliance or local standards and just floods onto the market as so much stuff does. a splendid result I Have to say so.

um, yes, that caught me out when I plugged it in and it tripped the breaker and then I was thinking but surely it's not affecting them all and well, yes, it does appear to be affecting them all.