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▲ Every US Electrical Outlet Explained [video](youtube.com)
24 points by zdw a day ago | 28 comments
▲Animats 31 minutes ago | parent | next [-]

Since 1996, the NEMA 10 column (10-20, 10-30) is no longer allowed in new installations. That was, for decades, the standard dryer outlet. No ground. The frame of the dryer is grounded to the neutral! Not to protective ground. This is idiotic by modern standards, but is still found in older houses.

(Haven't had to look at the NEMA outlet chart in years. I once had to specify a computer room back when DEC was a company. DEC used about five different connectors - some 110V, some 220V, some 3-phase, various current ratings. Needed custom-fabricated raceways with all the correct outlets.

Plus the electrical people at the aerospace company insisted on putting a hulking big copper busbar tied to ground on top of each raceway, and all cabinets were grounded to that. That was to give RF noise a very low resistance path to ground. Much RF R&D took place in that building, and things which blithered all over the RF spectrum were seriously annoying to the RF engineers. Computer grounding used to be a big deal, before everybody started using differential signals for almost everything.)

▲CaliforniaKarl 2 hours ago | parent | prev | next [-]

This is not a US electrical outlet, but it's one I've recently become aware of, which folks might find interesting:

Our next data center, for the HPC portion, may end up getting 480 VAC to the rack, with each outlet getting 277 VAC (one phase plus neutral and ground). If you order a generic Dell server, you'll find they now have power supply options for 277VAC.

What's the outlet? The D-Grid 400 (SDG 400). So, there's another outlet to add to the list!

▲TacticalCoder a day ago | parent | prev | next [-]

I'm typically not a big EU defender but it's one of the thing that is really oh-so-much better in the EU: every time I go to the US having to plug stuff into electrical outlet feels like I've been beamed back to the 1950s or something. Plugs don't fit properly: they simply feel loose. Or you need to use super bulky, non-sensical, plugs.

That and switches (like light switches): not only we've got way more variety in the EU but they also all feel of better quality.

Both electrical outlets and switches in the US do also look old and dated. Just like they feel when using them: old and outdated.

It's just all really weird, nearly anachronistic.

▲palmotea 3 hours ago | parent | next [-]

> I'm typically not a big EU defender but it's one of the thing that is really oh-so-much better in the EU: every time I go to the US having to plug stuff into electrical outlet feels like I've been beamed back to the 1950s or something. Plugs don't fit properly: they simply feel loose.

IIRC, the US electrified first. So a lot of its standards are kinda the first attempt, but they've stuck because the switching costs are too great. Other countries had the benefit of being able to improve on an existing system.

But I'm not sure if that really applies to plugs (IIRC British [giant] and Japanese [no grounding] ones are worse). But my understanding is the US 110v thing is kinda limiting, and 220v is way better.

> Plugs don't fit properly: they simply feel loose.

Let me guess: it was in a hotel? Hotel plugs are shit and worn out, because they get used far more heavily than pretty much anywhere else.

> Or you need to use super bulky, non-sensical, plugs.

For what? The only bulky US plugs are for weird things like dryers and electric ovens.

▲wongarsu an hour ago | parent | next [-]

The US plug is uniquely bad in that you can have live contacts exposed on a partially plugged in plug

I'd call both the British and the Schuko better. But they both come with tradeoffs. The British plug is huge, in part because of the built-in fuse. The Schuko is aesthetically less clean because the outlet is not flush, and because the plug is reversible you can't design around polarity. Both excellent plugs that are huge improvements over the US plug design in most ways, but both come with their own tradeoffs

▲johnwalkr 11 minutes ago | parent [-]

British and Schuko are both relatively huge. Even the 2-prong europlug that small electronics use, that also can be installed in a Schuko outlet, often make the European version of things like usb-c chargers significantly larger than the US version. I live in Europe but travel a lot. For all small electronics I try to get a Japanese or US version, and then use a small adapter. For travel, a US usb-c charger plus EU adapter is smaller than an EU usb-c charger plus US adapter. British-style outlets can also be coaxed to take a europlug, not that I would advise anyone to do that.

▲theodric 3 minutes ago | parent | prev | next [-]

> the US 110v thing is kinda limiting, and 220v is way better

More efficient with copper certainly, but 110V is safer: cf. Ohm's Law. Lower voltage penetrates skin less readily, so you're more likely to escape unscathed from a 110V zap.

In Ireland, on worksites, the corded tools are 110VAC/50Hz (115V, 120V... mains/2 on a transformer-- and 'mains' varies wildly according to my several years of data captures in a range between 214-240).

Speaking of copper efficiency, the British Isles do all kinds of silly things like running ring mains to enable the use of smaller conductors for higher loads on domestic electrical sockets, and notionally to provide a safety factor.

▲kalleboo 2 hours ago | parent | prev | next [-]

Japanese electrical is better in many ways than the US. We have insulated pin sleeves so kids can't touch electrified pins and whole-home GFCI instead of just one or two outlets in the kitchen/bath. The standard wall switches are also so much nicer.

▲CaliforniaKarl 2 hours ago | parent | prev | next [-]

> But my understanding is the US 110v thing is kinda limiting, and 220v is way better.

120V is safer (not "safe", "safer"[1]) than 240V. And for the times when 240V (or 208V) is a better fit, we have that available to us relatively easily.

> For what? The only bulky US plugs are for weird things like dryers and electric ovens.

Or the locking plugs, but I think that still fits your point: These are high-voltage and/or high-current things, which aren't being unplugged/plugged too much.

[1]: https://youtu.be/jMmUoZh3Hq4?si=JyZIge5lQXda4D0E&t=811

▲eco 3 hours ago | parent | prev [-]

Along those same lines, I still don't really understand why so many people call it 110v and 220v when the US hasn't been those voltages for around 100 years and it's been 120v and 240v for about 60 years (it was gradually stepped up the voltage starting in the 1930s).

▲brudgers 10 hours ago | parent | prev | next [-]

feels like I've been beamed back to the 1950s or something

That might because the US was largely electrified by 1950 with the major push before The War during the 1930's via the Rural Electrification Administration. By The War the TVA was up and running and that's where nuclear materials were manufactured for The Bomb.

▲morsch 3 hours ago | parent [-]

The European plug design is also ancient, going back to 1929

▲4dregress 3 hours ago | parent | prev | next [-]

Our plugs in the UK are by far the best design.

▲thevillagechief an hour ago | parent | next [-]

I used to think this, but I've been in the US just long enough to start rethinking it. The one thing I still prefer though is that each outlet has an off switch, no need to unplug your cable. Also, three prong cables are 90 degrees offset so it's easier to fit behind furniture.

▲nullisland00 3 hours ago | parent | prev | next [-]

They’re a great caltrop design. In my experience they’re too large and this causes problems with lead management.

▲cmiles8 2 hours ago | parent | prev | next [-]

I would agree the plugs are well designed, but it’s also a space pen when you needed a pencil. Using that massive plug and 240V to charge a phone or power a light bulb is just comical.

The US system sensibly uses 110-120V for most uses and then 240V where it really matters.

▲jimnotgym an hour ago | parent [-]

Well, you don't need to use that 'massive' plug to charge your phone....usb sockets are a thing. And the lights in my house don't have any plugs on them.

And... the plug really isn't that big at all.

▲ginko 24 minutes ago | parent | prev | next [-]

IMO they're completely overengineered. There's nothing useful they can do that schuko can't. (the built-in fuse and fixed polarity aren't useful)

▲Markoff 3 hours ago | parent | prev [-]

they are, except connectors are extremely bulky, but at least they are compatible with EU outlets as I learned in Malaysia, all you need is pen

▲smnrg 2 hours ago | parent | prev | next [-]

> "Or you need to use super bulky, non-sensical, plugs."

Did anyone say Schuko?

▲mschuster91 2 hours ago | parent [-]

It's not that bulky (compared to blue and red CEE or the British plug), and what about it is nonsensical?

▲scotty79 an hour ago | parent | prev | next [-]

Also windows.

▲ButlerianJihad a day ago | parent | prev [-]

I am unsure if this is a common mindset for Americans, but I personally perceived Europe as rather backward and out-of-date, technologically. I don't know why I got that idea, other than "Europe is more ancient than us" and believing that USA is the nexus and origin of all innovation.

So, when I arrived in Barcelona and Catalonia, I was pleasantly, mildly surprised that not only had Europe kept pace with us techno-mages in America, but they had some kind of parallel evolution going on, in terms of connectors, interfaces, protocols, etc.

My fiancée was sort of mystified, because my favorite subject of photography was not landmarks or her pretty face, but the circuit breaker box, the rear of her television set, the A/C unit, and any other cool, distinctly Euro-tech instances I could identify around there.

I tried helping her adjust/fix her aerial TV antenna, got zapped a few times; discovered that Catalonian TV antennas are energized with a few volts for whatever reason; decided that Euro-tech is beyond my expertise to tinker with on someone else's behalf, especially a native family.

Thankfully, I didn't have any portable electronics or appliances in my luggage that needed adapters or plugs, but the experience was truly humbling, and eye-opening, and I returned to the United States with a better calibrated worldview.

▲dguest 44 minutes ago | parent | next [-]

The US is innovative but can't be bothered to get the boring stuff right.

Meanwhile Europe standardized bank transfers with IBAN, killed connector type proliferation with by standardizing on USB-C, and routed 3-phase power most homes. Oh, and the metric system. And while Europe has a wide range of cultures and functionality of government, a lot of places have simpler tax forms and a more prescriptive legal system (as opposed to the precedent-dominated Common Law tradition in the US). The German-speaking countries even rewrote spelling to make it simpler.

I view a lot of this stuff as infrastructure investment. We shouldn't have to stumble over the mundane to do interesting things. As others have commented, Europe also had the advantage of adopting some technologies later, but in some cases they just seem to be more aligned with a system of constant (if sometimes frustratingly slow) improvement.

▲mschuster91 2 hours ago | parent | prev | next [-]

As for the TV antenna, centralized European installations tend to have really long cable runs, even more so for cable TV, and there's a wideband PA in the basement.

▲adventured 2 hours ago | parent | prev [-]

The US technology advantage is in software, hardware, biotech/pharma, AI, some advanced robotics (China is leading in general robotics), quantum, aerospace, military, medtech.

Competitively the US does well in energy tech and agriculture tech. The US is #2 in wind power, #2 in solar power, #1 in nuclear power, along with being the world's biggest oil & natural gas producer. The US industrial rail system is also an epic scale marvel, while its consumer rail system is pathetic.

It's definitely not elite in most infrastructure (including electrical plugs).

▲hdgvhicv 39 minutes ago | parent [-]

Europe generates more wind and has more solar, you clearly aren’t using per capita figures.

If you were than combined figures put USA behind places like Germany and Spain.

And bringing nuclear into it you get France absolutely trouncing.

So your argument is that “america is a big country”.

▲Markoff 3 hours ago | parent | prev [-]

one of my favorite YT channels together with Technology Connections (though as was mentioned recently, the videos are a bit on the longer side, but I like the form anyway), anything else similar?

unrelated to 1st paragraph - I like as well Mustard, B1M, Wendover Productions