There's no significant differences. And why there's a difference, the US went to build an electrical grid first and ended up with a slightly inferior infrastructure, and replacing it now would cost an extreme amount of money that makes the US' military budget look like a toy.
>>52270885 >Why is there different standards for electricity voltages and frequencies? Because the spread of these was generally limited to before the era of instantaneous, immediate communication and co-operation, on a mostly ad-hoc basis.
There's no real need to do anything about it, either, given that adapters are simple, known technology; and with the advent of globalisation you can generally get anything you need locally anyway.
>>52270897 >can't we just use 1 standard plug type for the world? well USB is a thing that's useful and a global standard. pipe whatever goofy format you want into your house, and leave the rest to the USB cable and socket.
...that's assuming you buy proper, in-spec USB equipment (ie anything not from the back of a Chinese flea market, bundled along with SUPAR MARIO WORLD 300 for the Chindento RS video game entertainment systam!!).
120v requires thicker wiring to transfer the same amount of watts. It is also generally safer for electricians to work with because your body's electrical resistance is able to keep the amperage low enough to prevent your heart from being kill.
240v requires thinner wiring to transfer the same amount of watts. It is also generally more dangerous for electricians to work with because your body's electrical resistance is less able to keep the amperage low enough to prevent your heart from being kill.
It's important to remember that while the amps is what ultimately kills you, the voltage influences how "easy" it is to kill you. This is why a 2 amp phone charger won't kill you. The higher the voltage, the less electrical resistance your body will have to the current.
Finally while US homes typically use 120v for almost everything, they can use 240v (ac units, electric stoves) by using two 120v nerves.
US likes to use their own standards, regardless of what is best. And for plugs, is is not a problem as most of europe is compatible and the main difference is how ground is connected and this makes the plugs look different. Denmark has the prettiest plugs, Germany has the safest plugs and Switzerland has the smallest ones.
As for frequencies, that has the least impact of them all but it is easier to collaborate with other countries if they use a compatible power grid.
>>52271643 Ok. Let's look at all the "advantages" and "safety features" in the US plug shall we?
>Grounded by standard Nope >Switched sockets Nope >Fused Nope >Falls out of the wall if you sneeze at it DAMN RIGHT IT DOES >Sparks when pulled out/plugged in quickly DING DING DING, ONTO ROUND 3 TIMMY
Honestly though. From a safety standpoint, the Britbong plug and socket are ideal. The only real argument that can be made against them is their size.
>>52271546 Yeah, but your breaker needs more amps then. Then you get a situation where you wanna use your welder and suddenly you need 100 amp breakers because of the low voltage. Suddenly having 0.20% chance of surving against 0.30% doesn't seem very important.
>>52271606 I thought they just picked one as fast as possible and then decided if it is worth changing. imperial units, 120v, ipv4 etc. It is a wonder they went with AC as they insist on being retarded children about everything else.
- Easily powered by solar panels and batteries. - No more AC to DC converters in your LED lighting (=the one thing that always breaks). - No more power bricks for your laptop. - No more chargers for your phone/tablet.
Only appliances requiring more than 100W (washing machines, electric ovens, etc) will still use alternating current.
>>52272090 >Easily powered by solar panels and batteries. >mfw some countries are actually taxing solar panel installations and making it obligatory to register them at an agency, all cause the national energy companies are scared of getting kucked
Here in the Netherlands we'll soon have to pay taxes over the electricity we generate during the day and deliver to the grid, and then pay taxes again in the evening to use the same amount of electricity.
That's why batteries will become necessary.
And converting battery power to high voltage alternating current only to convert it back to low voltage direct current a few meters down the wire is retarded.
>>52270885 Well as you can see there is to ways to use electricity - productive (220v/50hz) and secure (120v/60hz). 220/50 more economic type of transfering energy (about double less loses then 120), also 50 hz is more dangerous to human body
Forgot what website they were on in the 70's. Care to tell me? Also, i have a bridge to sell you and proof that the world is flat, but "THEY" (Whomever they may be, nobody ever fucking elaborates) don't want you to see it.
>>52272219 When people start using the workaround with batteries they'll try to make up some tax for them i'm sure. Energy companies are getting scared as fuck, i feel lucky living in a country where the electrical company is state owned and actually pays you for what you add to the grid instead of taxing you. People in Spain are getting taxed to hell for solar panel installations.
>>52272354 Tasers don't have very much current, they're battery powered and batteries have relatively large internal resistances. You need need either high voltage and current or low resistance and current to do damage.
>>52270885 How are the options between 120/240 worldwide? Here in Brazil we can choose what we use, I have just besides me one 120V and one 240V wall plug. Mostly everywhere here air conditioners are 240V only.
>>52272518 They give subsidies for it mainly looking for small and medium sized investors to cough up the cash for solar panel and windmill farms at the service of the energy companies so those can get a bigger cut as middle men and the govt can keep grabbing taxes even from renewal energies. What they want is basically a monopoly even over new energies. When people get in the way with their own installations they start taxing to hell.
>>52272260 >secure 120v Secure from what? You can still get a dangerous shock or burn down the house. Electricians are trained to make safe installations so these things are avoided, using a smaller voltage doesn't do anything to make you safe. Nothing is safe from human error.
>>52271546 >>52271733 >>52271804 >>52271904 >>52272354 No matter how hard I try I still can't understand why volts are so important and people measure stuff with volts. Why the hell do we need to know the potential energy of some electrons related to ground? Why aren't we measuring shit in amps which is a unit that makes sense?
>>52272958 >BUT USA/UK using 2 conductors of 120v and 1 neutral. >UK Huh isn't UK 240V three phase everywhere? Well actually actually I think its one of the three phases so it's 240V single phase standard with an option to upgrade to three phase.
America's residential electricity is nothing like UK from what I can tell. Commercial and industrial is 208V,240V,277V,480V and above; mostly three phase.
Why do we have these threads? They usually end up being pointless nationalism, and for what?
Any device made since forever that is worth taking overseas usually works with any combination of 230/110v and 50/60hz. If you are going overseas, it doesn't hurt to take an adapter either.
You'd have to be a special type of autistic to take a toaster or iron (two of a small minority of devices that aren't multispec in my house) on holiday or a business trip overseas.
I've got a shoebox of three different adapters from my travels. One for Yankee, Euro and British standards. When I go overseas, I bring the most relevant. Each cost me about five australian dollars. Now compare that to the cost of retrofitting an entire nation of devices for an international standard plug. It'd be even more expensive to change frequencies and voltages (frequency would be a big killer for industry --to the point where the japs keep both for different regions).
some UK houses have 3 phase. (I know 1 person, who does not need it/ask for it/use it, just the way the town was wired up his house got 3~
houses along a street will normal have a single phase 220-230-240v (depending on what standard +/- 10%, etc you are reading), if you were to measure two houses side by side you might measure 400VAC between phase conductors.
>>52273123 This is the way it happens in Australia as well.
In a rare occurances in some power outages (across one or two phases), your neighbour will still have power. It's happened once in my life during a heatwave (in '06?). Almost everyone on the street went to the neigbour with powers house and had a pool party until 5am on a worknight.
>>52273373 You know, in almost every plug, the contact between the pin and the inside of a plug is some sort of clamp that the pin slides into. The friction alone is usually enough to hold up these lightweight plugs
>>52270885 >Why is there different standards for electricity voltages and frequencies? Is there any significant differences? Yes. Transmission losses and the amount of power you can deliver by a cable of size xy are different.
>>52270897 Because nationalism and unwillingness to do large projects like this.
The EU thought about going with IEC 60906-1 ( https://www.wikipedia.org/wiki/IEC_60906-1 ) -which is the current obvious gold standard for plugs, an excellent design.
But then they went "herp" over having to pay for this transition, and how it would be oh-so problematic for their current governments to do this transition rather than the great other things they've allegedly planned.
And if the EU can't do it, someone else has to do it first, or it won't happen.
>>52273283 We have two pins like that in South Africa, usually for lower power devices. I don't know why you would be messing with plugs in the dark so that's not really a problem. One advantage of the three pin plugs is that they're secure, it's pretty much impossible to remove them accidentally.
>>52273557 Then ensuring the switch is off, you make the two meet. You will usually keep your finger in a position to contact both the prongs and the socket as to assist you with the complex aligning process.
It's safer than you think, the power point has no power when the switch is off so it's safe to touch.
It prevents arcing on the contacts, makes sockets a fuckload safer for kiddies, allows you to turn things off at the mains (like a toaster) without having to plug it out (great for plugs in awkward positions).
>>52271423 Dont forget ,we created the modern day electrical grid and other global standards We did it first,thus we did it our way,and you fags copied it and thought you could do better,which you didnt
>>52273823 Lol, yeah. No idea what's going on with that. My parents built a house a year ago, and there wasn't any requirement to use the new standard (didn't even know about it). I've only ever seen the new socket once, at some random mall food court.
>>52273853 Anon was just helping the retards who couldn't figure it out on their own.
>>52273123 >who needs 3 phases a lot of people. If you have a vacation house and you want to heat it, you can do it a lot faster with 3 phases. And several appliances like washing machines, dryers, ovens, etc can be a lot more efficient by using 3 phases. And unless you live in some old city, 3 phases has been the norm for decades.
>>52271733 You wouldn't run a welder off of a 120V plug. The standard 120V American plug is only rated for 20A. You would run a dedicated line using a special plug and in all likelyhood it would be a 240V line. This what they do for heaters and dryers.
>>52274230 It's possible these days but HVDC still sucks for any place where disruptions in service might occur. HVDC doesn't like to be turned off, it has a tendency to arc. AC no matter the voltage always has very brief moments where it's electrically "off" which allows for it to be turned off "relatively safely" at any time.
>>52275543 Croatia, and the only reason I have a single 20A breaker is for when I pull out a bunch of power tools outside, it's not really that hard to change the other 4 to 20A, but there's no reason.
>>52272748 No. And stop calling it amperage. >>52272704 Voltage is how much energy the electrons have. A volt is a unit of joules per coulomb (V = J/C), Joules being energy (obv) and coulomb being a number of electrons (1 coulomb roughly equalling 6.3e18 electrons).
Electrical engineers take both voltage and current into consideration for just about everything. People may talk about voltage slightly more often though because it's easier to measure and predict. Creating voltages from physical processes is relatively common and easy to do, and then you can compute how much current would flow due to ohm's law. The only physical processes that induce currents independent of voltage are photoelectric processes and magnetic fields, both of which are still used plenty.
>>52278351 lolno. You can be shocked with 0.1 milli amps of current at 10kV 24/7 and nothing would happen.
But if you got shocked with 20 amps of current at 240 volts and your body's electrical resistance only reduced the current to 500 milli amps then you are going to die whether the shock lasted 1, 2, 3, or 20 seconds.
Anyway in this regard 120 volts is pretty safe as the only way you would die from this is if you intentionally went up to the junction box and grabbed the main nerves while soaking wet.
240 volts on the other hand is lethal in less dramatic scenarios.
it uses an inductor to build up a large magnetic field. When the barbs are shot out, the gun cuts off battery power to the inductor, which collapses the magnetic field. Collapsing magnetic fields can induce huge charges, which translate into high voltage and current (see: flywheel diode), but only for a very small amount of time. A taser has a 50kV potential before it hits your skin, but once it hits your skin that voltage drops like a rock.
Externally, your body can have anywhere from 150Mohms to 500Mohms of internal resistance. The barbs on a taser break your skin, however. Once your skin has been broken, there's likely around a 400 ohm resistance between the taser barbs. 50kV / 400 ohms = 125 amps.
According to your logic, you'd die instantly. This is not the case, because it happens for so little time.
>>52278882 >>52278939 And the energy isn't determined by its speed, the amount of current that will flow through a constant resistance is determined by how much energy that current has (voltage). Voltage = joules / coulomb Current = coulombs / second Power = V * I = joules / second
>>52273840 Fuck you, you give electricians a shit name. Why don't you have any pride in your work? Do things correctly, stop cutting corners you faggot. You're only working with energy that powers the world, no problem to ahead fucking disrespect all the scientists and researchers that founded the principles to let you go home and Jack off your thin gauge penis to midget feet fetishes. Maybe you should have kept working at burger King, where cutting corners only means a suburban mother getting pissy cause her kid had only one pickle on her 2 dollar burger.
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