5 ms·
There really isn't a huge advantage for 3 phase unless you are doing high-power DC rectification or trying to run a motor. The US grid is basically 3-phase eve
by chris_va 3y ago
There really isn't a huge advantage for 3 phase unless you are doing high-power DC rectification or trying to run a motor.
The US grid is basically 3-phase everywhere, but it's neither needed nor cost-effective to run it into the home.
Now, the 400V part is different. That would require less copper (but with a safety cost).
- pangolinja 3y ago[flagged]
- chris_va 3y ago... the infrastructure is high voltage 3-phase, same as EU. Also, stone tools are easier to replace :P
- mulmen 3y agoInventor syndrome. Same thing with our cell phone networks and space ships. When you invent something you end up with the most “archaic” version, by definition. But it seems to still be working. American pragmatism says there’s better places to allocate resources.
- deleted 3y ago[deleted]
- deaddodo 3y ago[flagged]
- pavlov 3y agoThe Nazi genocide in the East was explicitly modeled on the treatment of Native Americans in the 19th century. So, like voltage, it’s another case where Americans invented something and Europeans doubled down.
- catchnear4321 3y agoyes, but who invented the americans
- hot_gril 3y agoInteresting thing I learned, horses actually originated in the Americas. Some of them migrated to Asia, then the ones in the Americas died out before human civilization, so only the Old World civs had them. When Europeans brought horses to the Americas, they were bringing them back.
- deaddodo 3y agoYes, Americans invented populace relocation (and the abuses that come with it). Nice to know the Roman Empire had a time machine to pull a major component of their imperial edict from. But let's pretend your warped view of history is reality...that happened 100 years earlier. If Europeans are so enlightened atop those tall horses, maybe don't do it again and 10x worse? In addition, I wasn't referring to the Holocaust...but the entire continent's shared sick desire to kill themselves off for 10km of border movement or literal dreams of world conquest.
- hot_gril 3y agoThis wouldn't surprise me, but I can't find it. I'm seeing some authors drawing comparisons, but haven't found Hitler or his party actually mentioning Native Americans. There are explicit references to Turkey, with Hitler mentioning the Armenian Genocide (as justification for invading Poland) and calling Ataturk a "shining star," along with the Nazi papers obsessing over his nationalist policies.
- hot_gril 3y agoOk I'm going to make this even darker: The metric system sucks for non-scientific usage, especially using Celsius for room or weather temps. Idk why Europeans (and other continents) insist on using something with such low granularity and weird usable ranges. 0F = prob not going outside, 100F = close to highest temp you'll see all year, 56C = highest outdoor temperature ever on Earth. In the 70s (F) = warmish weather, in the 60s = coolish weather, in the 20s (C) = either cool or hot. Digital thermostats add 0.5 increments if you set them to C mode, lol. Meanwhile KPH is too granular, while 0-100MPH is all you need for cars outside of racing. Divisibility into meters etc is pointless, cause it's not like I need to compare a road trip length to the height of a person. No surprise that basing your units on the physical properties of water doesn't give you very human-friendly results. Their only good unit is kilograms/grams. Edit: actually not even that.
- riversflow 3y agoMeh, I don’t even thing grams are very good. Pounds have a nice granularity for every day stuff: a 3 pound laptop and a 2 pound laptop are significantly different, but both are “about a kilo”. On the other end, a gram is such a small amount that I can only perceive it in multiples, whereas I have a pretty good idea of how much an ounce is.
- hot_gril 3y agoActually yeah, I remember realizing the same thing a while back. 1 pound difference is about what I can perceive. Same with 1˚F difference.
- Dylan16807 3y agoA laptop that's a pound and a half is also very different. But oh, if you're willing to say "and a half" you might as well be willing to say .7 kilo. There's no real overall advantage, you just picked a couple very specific numbers. You can always pick very specific numbers to make any system look better/worse.
- hot_gril 3y ago
- robswc 3y agoNo idea if you're from the US but this "weak infrastructure" has/is hosted/hosting nearly every important infrastructure that makes the online world go round and has been doing perfectly fine for decades. What are you doing that you need 400v?
- hot_gril 3y ago> What are you doing that you need 400v? Complaining about Americans on the internet, obviously.
- FLT8 3y agoI am in Australia and am in the process of having our home supply wired for three-phase 415v. Everything is heading down the path of electrification. Where previously we had gas central heating, cooking, and hot water, we are replacing those with electric HVAC (30amp circuit @ 240v, admittedly rarely driven that hard), electric instantaneous hot water (40 amp @ 240v), induction cooktop (32 amp), oven (15 amp), and also introducing a car charger (total approx 45 amps across the three phases).. it's likely at least the HVAC, cooktop/oven, car charger, and hot water could be on at or around the same time, which would result in more power draw than a standard single phase connection here (80a) could supply. It's not that it's needed all the time, but it's helpful to have the headroom a 3-phase supply can provide.
- kukkamario 3y agoCurrently probably biggest advantage is electric car charging. It is easy and cheap to add high power fast charger when there is already 3 phases available. 400V between phases so 230V per phase. Safety is provided by making plugs not expose contacts while half plugged. US plugs are really unsafe compared to plugs used in most of the Europe.