Added: 3 years ago
From: toddatron
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  • This is exactly the info I needed. Thank you so much!

  • you'd think japan would have bigger supplies for such a technology based country, we have 230-250v in england at 100 amp for most houses, three phase is becoming more popular

  • At 7:40, they call these transformers as "cubicles" somehow. These will typically do 6600V->200V stepdown. And at 7:50, the service-drop looks like it is for three-phase @ 200V (maybe with the single-phase tied together) given that you see two power meters, one for single-phase 100V/3wires and another for three-phase @ 200V.

  • 3:46! Funny! That's a funny lookin ol thing. hehe

  • single phase.....wow. i thought 2 phase was common

  • The UK is different to all of these countries. We have one standard voltage of 220 volts 50 hz. Our mains plugs have 3 square pins and are quite bulky and ugly, they have an internal fuse for extra safety. ALL domestic electrical items have the same 13amp plug, but with lower amp fuses for small items e.g. lamps. Plugs are usually moulded. Our Electric cookers are hard wired to a 30 amp outlet, with a separate switch on them. British homes normally have a 60 amp circuit entering the home.

  • Is the main actually an AFCI? Seems pretty surprising that Japan should have had them from the 80s onwards when the US only got them in the early 2000s, a main GFI (presumably with a trip current more like 30mA as opposed to the US 5mA) seems more likely to me. Main RCDs (official term for electromechanic ground fault interruptors without built-in overcurrent protection) with trip currents of 30, 100, 300 or even 500mA have been required in most European countries for quite some time now.

  • And my 240 volt dryer outlet is at 241.4/242.7/59/60hz

  • By me in NJ USA its 120.8 121.5 at 59/60 hz

  • It's almost a shame NA is stuck with 120 volts. 220-240 is superior in terms of reduced conductor size and less current (less potential for overheated sockets etc).

    But I wonder why Japan hasn't moved to grounded receptacles? They've been required in the US and here in Canada since the early 60s. And they are backward compatible with 2 prong polarized and unpolarized plugs. Win-win situation.

  • @captain150 They have only recently began to use them more in new construction but non polarized is still the popular choice. Its funny even new appliances and some heavy duty stuff are all 2 pin polarized at best. A third ground pin is rare on anything. Then there is that green lead for a ground that can be seen dangling and never hooked up. I admit I haven't hooked up the one on my microwave:P

  • @toddatron I admit to using one of those 3 prong to 2 prong cheater plugs heh.

    The ground pin is kind of like car airbags, or drop down oxygen masks in an airplane. The vast majority will never be required.

  • @captain150 no cuz we get 240 volts to just for stuff like AC'S dryers and hot water heaters i think the usa has hafe 208/240 volt in NJ I have 240 volt for both my dryer and AC unit. And in most buildings the lighting has taps for 120/208/240/277/480 so most lighting in big buildings runs on 208 or 277 most of the time 277 and 480. but thats for HID lighting and for Fluorescents. I can get a Incandescent that will run on 240 60hz so we get it all you could say.

  • @67tr876 I'm in Canada. Our electrical system is identical the American one. I have 240volt range, dryer and air conditioning. Everything else is 120 volts.

    My point about 240v being superior applies to everything though. A vacuum cleaner in North America uses 12 amps at 120v. That's a heavy load for most circuits. The equivalent unit in Europe uses 6 amps at 240v. It's never going to change now, but it's too bad North America is stuck with 120 volts for general circuits. 240v is better.

  • @captain150 I see but ya why cant we bost up to 240 volts !

  • @67tr876 I am in Canada too and a common supply voltage here is "347 / 600V". We do use the 347V for lighting but mostly for parking lots and some fluorescents.. 600V HID lighting was popular in the steel mills around here and in some other buildings but its very rare now due to safety issues. Even 347V has had a few issues where its resulted in code changes requiring "ballast disconnects" in light fixtures now to provide a means of isolating the fixture when servicing the ballast.

  • A-mazing videos. Very helpful. Not a gear-head, so some of this was a bit o'er my enfeebled head, but still ... it is very nice to see :) Very well done. You CARE.

  • hahaaaa tachikoma :D

  • here in nz its 238~ between 48~52 hertz. it seems to b corrected to make synchronous motor clocks on time, well anything really.

  • Well done! Answered a lot of my questions!

  • A bit different than here in Norway, where we usually have 230V 50Hz for everything! Sometimes 3x230V for waterheater (all phases are "hot"). Nowdays 3phase 400\440V are starting to be more popular, it has 3 phases (hot) and one Neutral. Between 1ph and N, there are 230V. All our 230V apliance plugs fits both ways in sockets (No polarization). 400V are a bit safer when it comes to earth faults. 16A fuses are most common (3680W), but old houses have 10A (2300W) [IT=230V, TN=400V)

  • Hey thanks for this! I am always interested in stuff like that! Great comment!

  • Yea .....glad it was useful to you. Dozo!!

  • Very educating, Thank you!

  • neat vids

  • Thanks!

  • Nice job. I enjoyed these two vids

  • Thanks...... I am happy to share and help with my vids. Not to many people seem to be interested in this topic but when I was gathering info on Japan before I moved I had a hard time finding this info in a package. I hope it served you well....

  • It's things like these that I'm sure a lot of people don't think about. Hey, I didn't even know that Japan had two different electrical ouputs

  • I would really like to know about the apartments and houses and what they're priced specifically the older style houses as well.

  • Great question and a vid on that is coming but...... a new home say three bed rooms and a car port is about 30000000yen to 50000000yen and old house usually 20 to 30 years old can go for as little as 13000000yen and hovering around 28000000yen with a larger lot say two car spots and 4 to 5 bedrooms. All the homes I mentioned are in suburb areas not in the city and not so far as to need a car. all the lots are strips of land around the house about .5 meters to 4 meters. The rooms are 6 tatami mat

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