roniheels Posted December 5, 2008 Posted December 5, 2008 United States - Residential is 240 volt single Phase. - split into 3 lines consisting of (2) 120 volt lines and a neutral line. This provides both 120 volt for standard wall outlets and combined 240 volts for appliances such as A/C, ranges, dryers and such. There will be review on Thur and exam on Friday so, Pay Attention. Jen Oh great! Now we have take a written test. Shocking! (ouch...no pun intended).
danielp6406 Posted December 5, 2008 Posted December 5, 2008 Here in Europe we've got three-phase 3x400/230V for most houses [apart from flats in blocks] and commercial / public buildings. The power is transmitted through the urban / rural areas by 3x15kV grid, and stepped down with local transformers. Malls, factories and other large objects have their own substations with transformers; for a group of houses / blocks, there's one nearby substation. Elegant :-) A little bit "out of topic" but see below more details about us in North America: We also got 3 phases power here in Canada and USA but not to supply single house. Canada 3 phases power is 208-230/575 Volts. USA is 208-230/460 Volts (60 Hz). High voltage grid in small neighborhood is 14.4 kV. Larger cities is 25 kV. In the Canadian province where I live, the voltage for long distance power transmision is 735 kV. (Now you may know from which province I am from) Back to the subject: I was very happy having found this forum to discover I was not alone (or crazy) wearing high heels
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