Since 2004, the mains voltage in Poland has been increased from 220V to 230V, and as far as I know, it's the same across the entire EU. In Europe, the frequency is 50Hz, while in the US it's 60Hz. In my apartment, which is in a small block of flats in Poland, I have a three-phase installation - a legacy from the electric heating system from the early 2000s.
sobota, 22 marca 2025 o 17:56:43 UTC+1 newxito napisał(a): > In Switzerland, there are many things that normally run on 3-phase power > in a private household: oven, steamer, induction cooker, heat pump, washing > machine, dryer, wall box, and of course, the ventilation system for the > inevitable nuclear shelter :-) > > Alex schrieb am Samstag, 22. März 2025 um 16:31:01 UTC+1: > >> Many properties (larger homes and any business premises and abive in the >> UK) are supplied with three phase electricity, which is 230v phase to >> neutral and 415v phase to phase. 120 Degree phase offset between the >> phases. Very potent (and useful!) >> >> Our normal supply for residential is 230v phase to neutral, mostly as >> already mentioned with N&PE joined at the cable entry to the property but >> some (e.g. pole fed) only have L and N provided and earth is via an earth >> rod (TT installation). RCD protection is mandatory in these circumstances >> (and essentially mandatory anyway now as increasingly regulations require >> more circuits to be protected). 30mA RCD protection for most circuits and >> 100mA and / or time delay if upstream for discrimination. >> >> The rest of Europe is 220v, so a little lower than the UK, but we >> harmonised by being +6% and -10% tolerance while the rest of the EU is +/- >> 10%. >> >> The US way with 220v centre tapped is quite noval, but 3 phase is great >> for workshops as it gives great torque in motors, though modern VFD >> controllers bridge the gap mostly. >> >> >> >> On Friday, 21 March 2025 at 23:51:21 UTC David Pye wrote: >> >> Not just the UK - the whole EU is like that! >> >> David >> >> On Fri, 21 Mar 2025, 23:40 gregebert wrote: >> >> Wow! I had no idea the full 220V was present in the UK; that's a very >> dangerous voltage to touch. In the US, neutral is connected to GND at the >> point-of-entry to the building and there is also a grounding rod though the >> electrical code only requires a maximum of 25 ohms to Earth (it varies due >> to soil condition), and definitely wont suffice as a redundant neutral. >> >> -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion, visit https://groups.google.com/d/msgid/neonixie-l/457e8200-3bf7-4a31-ba32-a9cfe368e9e1n%40googlegroups.com.
